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Distribution records of Southern Indiana vascular plants III.

ABSTRACT. New collections in the Indiana University Southeast Herbarium, and review of existing collections, yielded eight new vascular plant state records and 120 new county records mainly for Clark, Crawford, Floyd, Harrison, and Jefferson counties in southern Indiana. Indiana vascular plant species listed as state endangered, threatened, or rare are noted.

Keywords: Vascular plants, Indiana, distribution records, county records, state records


The Indiana University Southeast Herbarium contains vascular plant collections primarily from Clark, Crawford, Floyd, Harrison, and Jefferson counties, with occasional collections from other southern Indiana counties. This area of southern Indiana includes the lowermost parts of the Mitchell Karst Plain and Knobstone Escarpment sections of the Highland Rim Natural Region and the Shawnee Hills Natural Region (Homoya et al. 1985).

Revision of county species lists and entry of all mounted herbarium sheets into a computer database have allowed collectors to target species which are potential state or county records. Former and present collectors include Indiana University Southeast students, the authors, and several volunteers. These efforts have yielded many new vascular plant county records since the publication of our previous distribution lists (Maxwell & Thomas 2003; Thomas, Ash & Maxwell 2005).


State records and noteworthy collections are listed alphabetically by their scientific names and are briefly discussed, followed by species which are state endangered, threatened, rare, and watch listed. Table 1 includes distribution records with their collection vouchers. Nomenclature and common names follow the USDA Plants Database (USDA 2009). Determination of species status follows the Indiana Natural Heritage Data Center's Endangered, Threatened, and Rare Vascular Plants list, from the Indiana Department of Natural Resources (DNR), Nature Preserves (25 September 2007).

Plants were collected from various sources, including contract surveys for The Nature Conservancy and ongoing searches for state-listed species in area parks and forests. Site information for state-listed species was reported to the Indiana Department of Natural Resources, Division of Nature Preserves. Record vouchers were retained at the Indiana University Southeast herbarium.


Cardamine impatiens L. (Brassicaceae). Narrow Leaved Bittercress. This introduced species, found mainly to the east of Indiana, was discovered in the newly-opened Ohio Riverfront area of Charlestown State Park. This species is considered invasive by most accounts and will likely prove to be a nuisance. Initially these plants were thought confined to a short dirt road along the Ohio River; subsequently, a large population was discovered scattered along a steep rocky ridge nearby. We consider W.E. Thomas 2742 the state record voucher.

Hydrocotyle ranunculoides L.f. (Apiaceae). Floating Marshpennywort. A native species just entering Indiana, about a dozen of these creeping plants was discovered growing along the banks of Bryant Creek in Switzerland County. The plants were found in a still backwater area of the boat ramp located near the mouth of the creek. We consider W.E. Thomas 2853 the state record voucher.

Impatiens balsamina L. (Balsaminaceae). Spotted Snapweed. This introduced species was found in the Muscatatuck River bottoms in the Sage's Ferry area along the old portion of SR 256 now used for access to the river. We consider H.C. Curtis 322 the state record voucher.

Ipomoea quamoclit L. (Convolvulaceae). Cypressvine. This introduced species was observed and photographed in the wild at Falls of the Ohio State Park in September of 2001, but the plants at that site did not persist. The Ohio County collection was from a population at a public boat ramp along the Ohio River in Rising Sun. We consider W.E. Thomas 2489 the state record voucher.

Kyllinga gracillima Miq. (Cyperaceae). Pasture Spikesedge. This small introduced weedy sedge, considered invasive by many authors, seems partial to moist depressions in open mowed grassy areas such as parks and athletic fields. The plant was discovered to be common in five Floyd County parks. One additional site in Floyd County was found at the Mount Saint Francis Retreat Center. The Clark County record collection was from a small park in Clarksville. Additional collections were made in Clark County, all with habitat identical to that of the Floyd County sites. The Jefferson County collection was from a small park in Madison where the plants were abundant around the moist edges of a fishing lake and lining nearby ditches. We consider W.E. Thomas 2209 the state record voucher.

Mazus pumilus (Burm. F.) Steenis (Scrophulariaceae). Japanese Mazus. The first Indiana collection of this introduced Asian weed was in Martin County by Steve Dunbar. (Steve Dunbar 8, Martin County, 8 Aug 2001, IND). We consider this collection the stare record. The collections W.E. Thomas 2614 and W.E. Thomas 3145 provide vouchers for the species in Clark and Floyd counties, respectively.

Ranunculus parviflorus L. (Ranunculaceae). Smallflower Buttercup. This introduced species seems to be a weed of open grassy areas and was first discovered in a Floyd County park. Small populations of the species were later found in cemeteries near Henryville in Clark County and at Evans Landing in Harrison County. We consider W.E. Thomas 2334 the state record voucher.

Sherardia arvensis L. (Rubiaceae). Blue Field Madder. This introduced plant is found in open mowed grassy areas. Thomas collected the species from Mount Saint Francis Retreat Center in New Albany, Floyd County, and from the Newburgh Lock and Dato Overlook Park in Warrick County. The plant was not abundant at either site. Additional collections were made in Monroe County on 25 May 2008 by the Yatskievychs (Kay Yatskievych and George Yatskievych 2008-06, IND), and in Clark County by Richard Lyons. We consider W.E. Thomas 2003 the state record voucher.


Achyranthes japonica (Miq.) Nakai (Amaranthaceae). Japanese Chaff Flower. This introduced weed, seemingly limited to the Ohio River floodplain areas, was first reported for Indiana by Maxwell & Thomas (2003). The Indiana University Southeast Herbarium holds voucher specimens for Clark, Crawford, Floyd, Harrison, & Jefferson counties. The collections W.E. Thomas 2254, 2859, 2898 & 2901 will add confirmation vouchers for the Indiana counties of Perry, Switzerland, Vanderburgh, and Warrick, respectively.

Fatoua villosa (Thunb.) Nakai (Moraceae). Hairy Crabweed. This introduced species has been collected from three sites in Harrison County, one in Clark County and three in Floyd County. The Harrison County collection was made from an extensive population along Kintner Bottoms Road in the southern part of the county.

Hydrilla verticillata (L.f.) Royle (Hydrocharitaceae). Waterthyme. The Clark County collection of this introduced species was made along the banks of Fourteen Mile Creek, a tributary of the Ohio River, within Charlestown State Park. The plants were rooted in the shallow edge of the creek. Fourteen Mile Creek for most of its length through the park is essentially a still backwater area of the Ohio River, perhaps providing more suitable habitat for the plant than the Ohio River proper.


Asclepias viridis Walter. (Asclepiadaceae). Green Antelopehorn. Three populations of this species were found along the roadside in Charlestown State Park.

Cuscuta indecora Choisy (Cuscutaceae). Bigseed Alfalfa Dodder. First reported for Indiana by Thomas et al. (2005), this dodder has now been determined to be in Harrison County.

Euphorbia spathulata Lam. (Euphorbiaceae). Warty Spurge. Thomas found a small population of this species on a Nature Conservancy Forest Bank easement in Washington County.

Schoenoplectus smithii (A. Gray) Sojak (Cyperaceae). Smith's Bulrush. The Clark County collection was from the Clark State Forest.


Azolla caroliniana Willd. (Azollaceae). Eastern Mosquitofern. The Clark County collection of this aquatic fern was from a small lake in a Jeffersonville city park where it covered most of the lake surface. A smaller and likely episodic patch of this fern was discovered in a still water pool along Bryant Creek at a boat ramp near the Ohio River in Switzerland County.

Najas gracillima (A. Braun ex Engelm.) Magnus (Najadaceae). Slender Waternymph. The Clark County collection listed in Table 1 was from Oak Lake and the Scott County collection from Shaw Lake, both within the Clark State Forest. Subsequent Clark County collections of the species were made from Schlamm and Franke lakes also within the Clark State Forest.

Rhexia mariana L. var. mariana (Melastomataceae). Maryland Meadowbeauty. This species was discovered in a disturbed vacant lot in the north end of Jeffersonville.

Strophostyles leiosperma (Torr. & A. Gray) Piper. (Fabaceae). Slickseed Fuzzybean. Populations of this species were discovered on two vacant lots in the north end of Jeffersonville.


Acalypha deamii (Weath.) H.E. Ahles (Euphorbiaceae). Deam's Threeseed Mercury. This species seems well-established in the southern part of the state. The Crawford County collection was from a small tract of the Harrison-Crawford State Forest along the Turkey Fork of the Little Blue River. Additional Crawford County collections of the species were made from a large population along the Blue River south of Wyandotte, also within the Harrison-Crawford State Forest. In Vanderburgh County the plant was found in a wooded area along the Ohio River southwest of Angel Mounds State Park.

Sehoenoplectus purshianus (Fern.) M.T. Strong (Cyperaceae). Weakstalk Bulrush. This plant is commonly found on the banks of manmade reservoirs. In Scott County large populations of this bulrush were found growing along the dam of Wilcox Lake in the Clark State Forest. A smaller population was located within the Quick Creek Marsh area below the dam at Hardy Lake. In Crawford County the plant was very abundant along the shoreline of the cove running east of the Little Patoka boat ramp. In Perry County the plant was doing well around the edges of a small pond along Stare Road 37. In Washington County the plant was found along the shoreline of the Spurgeon Hollow impoundment.

Woodwardia areolata (L.) T. Moore (Blechnaceae). Netted Chain Fern. The Clark County collection of this species was made from the shoreline of Schlamm Lake in the Clark State Forest.

Zannichellia palustris L. (Zannichelliaceae). Horned Pondweed. The Washington County collection of this species was from Lake Saligna, a City of Salem public reservoir just south of town. The plants were common around the edges of the lake near the dam.


Cyperus acuminatus Torr. & Hook. ex Torr.

(Cyperaceae). Tapertip Flatsedge. A small population of perhaps six plants was found along Wulfman Road in Harrison County. The plants were colonizing the wet perimeter of a large persistent mud-hole. In Clark County collections were made from several sites where the plant showed an affinity for the same mudhole type environment.

Diodia virginiana L. (Rubiaceae). Virginia Buttonweed. The Jefferson, Ohio and Perry county collections of this species were from sandy Ohio River shoreline areas, a habitat where the plant thrives. In Orange and Monroe counties the plant was found in low-lying wet fields and moist edges of lakes.

Platanthera clavellata (Michx.) Luer (Orchidaceae). Small Green Wood Orchid. A population of about 30 plants was found on a Nature Conservancy Forest Bank easement in Washington County.

Veratrum woodii J.W. Robbins ex Alph. Wood (Liliaceae). Wood's Bunchflower. This species was observed by William Adams and collected by Thomas on two different Nature Conservancy Forest Bank easements in Harrison County. The observed county record was in a population near Lanesville. The Thomas collection was made from a much larger site along Mosquito Creek.


In Thomas et al. (2005) we reported Iva xanthifolia Nutt. from Clark and Floyd counties. The collections W.E. Thomas & R.H. Maxwell 605 and W.E. Thomas 1114 were later determined to be Fatoua villosa (Thunb.) Nakai. We regret any problems resulting from these misidentifications.


We wish to thank Dr. David W. Taylor, Curator of the Indiana University Southeast Herbarium (JEF), for use of the facilities and his encouragement. We thank Michael A. Homoya, botanist, and others in the Indiana Department of Natural Resources for their continual encouragement and assistance in the search for listed species in southern Indiana. Thanks also to Dan Bortner, Director of the Division of State Parks and Reservoirs, for providing a collection permit to Maxwell and Thomas for Charlestown and O'Bannon Woods State Parks and to Ben Hubbard, Program Director Indiana Division of Forestry (RET), who provided a collection permit for Clark and Harrison-Crawford State Forests. Thanks to Allen Pursell of The Nature Conservancy for allowing collections on their properties. We also appreciate the cooperation of the following Property Managers: Larry Gray of Charlestown Park; Dwayne Sieg of Harrison-Crawford State Forest; and Walt Zak of Clark State Forest. Special thanks to Dr. George and Kay Yatskievych of the Missouri Botanical Garden, Dr. Paul Rothrock of Taylor University and Dr. Carole Lembi of Purdue University for their help in determining and confirming identifications.

Manuscript received 11 November 2008, revised 3 April 2009.


Division of Nature Preserves. 2007. Endangered, threatened, and rare vascular plant species documented from Indiana. Web site. gov/dnr/files/etrplants.pdf. Indianapolis, Indiana.

Homoya, M.A., D.B. Abrell, J.R. Aldrich & T.W. Post. 1985. The natural regions of Indiana. Proceedings of the Indiana Academy of Science 94:245-268.

Maxwell, R.H. & W.E. Thomas. 2003. Distribution records of southern Indiana vascular plants I. Proceedings of the Indiana Academy of Science 112:22-28.

Thomas, W.E., S.P. Ash & R.H. Maxwell. 2005. Distribution records of southern Indiana vascular plants II. Proceedings of the Indiana Academy of Science 114:19-25.

USDA, NRCS. 2009. The PLANTS Database ( 12 March 2009). National Plant Data Center, Baton Rouge, Louisiana 70874-4490 USA.

William E. Thomas and Richard H. Maxwell: Herbarium, Indiana University Southeast, New Albany, Indiana 47150 USA
Table 1.--State and county records. Abbreviations: SX = State
Extirpated, SE = State Endangered, ST = State Threatened, SR =
State Rare, WL = Watch List, s.n. = (sine numero) without a
number, followed by the collection date. An asterick (*)
preceding the species name indicates an introduced species.

Species name                         Family             County

Acalypha deamii (Watch.) H.E.        Euphorbiaceae      Crawford
  Ahles (SR)                                            Vanderburgh
(*) Achyranthes japonica (Miq.)      Amaranthaceae      Perry
  Nakai                                                 Switzerland
Allium burdickii (Hanes) A.G.        Liliaceae          Floyd
Anoda cristata (L.) Schltdl.         Malvaceae          Harrison
(*) Arthraxon hispidus (Thunb.)      Poaceae            Clark
  Makino                                                Floyd
Asclepias viridis Walter (SE)        Asclepiadaceae     Clark
Azolla caroliniana Willd. (ST)       Azollaceae         Clark
Bothriochloa laguroides (DC.)        Poaceae            Clark
  Herter subsp.
torreyana (Steud.) Allred & Gould                       Floyd
(*) Bromus inermis Leysser           Poaceae            Harrison
(*) Bromus sterilis L.               Poaceae            Harrison
(*) Cardamine impatiens L.           Brassicaceae       Clark
Carex aggregata Mackenzie            Cyperaceae         Harrison
Carex albursina Sheldon              Cyperaceae         Clark
Carex communis L.H. Bailey           Cyperaceae         Harrison
Carex davisii Schwein. & Torr.       Cyperaceae         Harrison
Carex glaucodea Tuck. ex Olney       Cyperaceae         Harrison
Carex grisea Wahlenb.                Cyperaceae         Harrison
Carex mesochorea Mack.               Cyperaceae         Harrison
Carex plantaginea Lam.               Cyperaceae         Clark
Carex prasina Wahlenb.               Cyperaceae         Crawford
Carex retroflexa Muhl. ex Willd.     Cyperaceae         Crawford
Carex shortiana Dewey                Cyperaceae         Harrison
Carex stipata Muhl. ex Willd.        Cyperaceae         Clark
(*) Centaurea stoebe L.              Asteraceae         Harrison
(*) Ceratocephala testiculata        Ranunculaceae      Floyd
  (Crantz) Roth
Coreopsis lanceolata L.              Asteraceae         Clark
Coreopsis tinctoria Nutt.            Asteraceae         Clark
Cuscuta coryli Engelm.               Cuscutaceae        Harrison
Cuscuta indecora Choisy (SE)         Cuscutaceae        Harrison
Cuscuta obtusii lora Kunth var.      Cuscutaceae        Harrison
  glandulosa Engelm.
Cuscuta pentagona Engelm. var.       Cuscutaceae        Crawford
Cuscuta polygonorum Engelm.          Cuscutaceae        Clark
Cyperus acuminatus Torr. & Hook.     Cyperaceae         Clark
  ex Torr. (WL)                                         Harrison
Cyperus erythrorhizos Muhl.          Cyperaceae         Harrison
Cyperus squarrosus L.                Cyperaceae         Clark
Diodia virginiana L. (WL)            Rubiaceae          Jefferson
Eleocharis palustris (L.)            Cyperaceae         Floyd
  Roem. & Schult.
Euphorbia spathulata Lam. (SE)       Euphorbiaceae      Washington
(*) Fatoua villosa (Thunb.) Nakai    Moraceae           Clark
Floerkea proserpinacoides Willd.     Limnanthaceae      Clark
Geum virginianum L.                  Rosaceae           Clark
Helianthus grosseserratus M.         Asteraceae         Floyd
(*) Heliotropium indicum L.          Boraginaceae       Crawford
(*) Hibiscus trionum L.              Malvaceae          Harrison
Humulus lupulus L.                   Cannabaceae        Crawford
Huperzia lucidula (Michx.)           Lycopodiaceae      Jefferson
(*) Hydrilla verticillata (L.f.)     Hydrocharitaceae   Clark
Hvdrocotyle ranunculoides L. f.      Apiaceae           Switzerland
(*) Impatiens balsamina L.           Balsaminaceae      Washington
(*) Ipomoea quamoclit L.             Convolvulaceae     Ohio
(*) Kickxia elatine (L.) Dumort.     Scrophulariaceae   Floyd

(*) Kyllinga gracillima Miq.         Cyperaceae         Clark
Kyllinga pumila Michx.               Cyperaceae         Harrison
Lipocarpha micrantha (Vahl.)         Cyperaceae         Harrison
  G. Tucker
Ludwigia leptocarpa (Nutt.)          Onagraceae         Harrison
  H. Hara
(*) Mazus pumilus (Burm. f.)         Scrophulariaceae   Clark
  Steenis                                               Floyd
Myosurus minimus L.                  Ranunculaceae      Floyd
Najas gracillima                     Najadaceae         Clark
  (A. Braun ex Engelm.)
Magnus (ST)                                             Scott
Paspalum fluitans (Ell.) Kunth       Poaceae            Clark
Platanthera clavellata (Michx.)      Orchidaceae        Washington
  Luer (WL)
Platanthera lacera G. Don            Orchidaceae        Harrison
(*) Poa trivialis L.                 Poaceae            Harrison
Polygonum amphibium L.               Polygonaceae       Clark
Proserpinaca palustris L.            Haloragaceae       Clark
Prunus angustifolia Marshall         Rosaceae           Harrison
Pyrrhopappus carolinianus (Walter)   Asteraceae         Crawford
(*) Ranunculus parviflorus L.        Ranunculaceae      Clark
Rhexia mariana L. var. mariana       Melastomataceae    Clark
Rubus flagellaris Willd.             Rosaceae           Floyd
Salvia refexa Hornem.                Lamiaceae          Floyd
Schoenoplectus pungens (Vahl)        Cyperaceae         Crawford
Schoenoplectus purshianus (Fern.)    Cyperaceae         Crawford
  M. T.
Strong (SR)                                             Perry
Schoenoplectus smithii (A. Gray)     Cyperaceae         Clark
  Sojdk (SE)
Schoenoplectus tabernaemontani       Cyperaceae         Floyd
  (C.C. Gmel.) Palla
Scirpus georgianus Harper            Cyperaceae         Crawford
(*) Senecio vulgaris L.              Asteraceae         Floyd
(*) Sherardia arvensis L.            Rubiaceae          Clark
Sibara virginica (L.) Rollins        Brassicaceae       Jefferson
Strophostyles leiosperma             Fabaceae           Clark
  (Torr. & A. Gray) Piper (ST)
Thelypteris noveboracensis (L.)      Thelypteridaceae   Floyd
Triadenum tubulosum (Walter)         Clusiaceae         Jefferson
Veronica anagallis-aguatica L.       Scrophulariaceae   Clark
(*) Vicia tetrasperma (L.) Schreb.   Fabaceae           Clark
Woodwardia areolata (L.) T. Moore    Blechnaceae        Clark
Zannichellia palustris L. (SR)       Zannichelliaceae   Washington

Species name                         Collector and number (Date)

Acalypha deamii (Watch.) H.E.        W.E. Thomas 2159 (10 Sep 2005)
  Ahles (SR)                         W.E. Thomas 2899 (24 Oct 2007)
(*) Achyranthes japonica (Miq.)      W.E. Thomas 2254 (14 Oct 2005)
  Nakai                              W.E. Thomas 2859 (15 Sep 2007)
                                     W.E. Thomas 2898 (24 Oct 2007)
                                     W.E. Thomas 2901 (24 Oct 2007)
Allium burdickii (Hanes) A.G.        W.R. Adams 116 (4 Jun 2006)
Anoda cristata (L.) Schltdl.         W.E. Thomas 2638 (20 Oct 2006)
(*) Arthraxon hispidus (Thunb.)      W.E. Thomas 2869 (19 Sep 2007)
  Makino                             W.E. Thomas 620 (14 Oct 2002)
Asclepias viridis Walter (SE)        W.E. Thomas 2730 (27 May 2007)
Azolla caroliniana Willd. (ST)       W.E. Thomas 2436 (30 Jul 2006)
                                     W.E. Thomas 2851 (15 Sep 2007)
Bothriochloa laguroides (DC.)        W.E. Thomas 2829 (26 Aug 2007)
  Herter subsp.
torreyana (Steud.) Allred & Gould    W.E. Thomas 2826 (25 Aug 2007)
                                     W.E. Thomas 2831 (27 Aug 2007)
(*) Bromus inermis Leysser           H.C. Curtis 59 (19 May 2003)
(*) Bromus sterilis L.               H.C. Curtis 252 (9 May 2004)
(*) Cardamine impatiens L.           W.E. Thomas 2742 (4 Jun 2007)
Carex aggregata Mackenzie            H.C. Curtis 258 (16 May 2004)
                                     H.C. Curtis 257 (15 May 2004)
Carex albursina Sheldon              W.E. Thomas 1903 (22 Apr 2005)
Carex communis L.H. Bailey           W.E. Thomas 1210 (28 Mar 2004)
Carex davisii Schwein. & Torr.       W.E. Thomas 1347 (11 May 2004)
Carex glaucodea Tuck. ex Olney       H.C. Curtis 49 (12 May 2003)
Carex grisea Wahlenb.                Toni Gettmaker 100 (3 Jun 1985)
Carex mesochorea Mack.               H.C. Curtis 363 (28 May 2005)
Carex plantaginea Lam.               W.E. Thomas 1905 (22 Apr 2005)
Carex prasina Wahlenb.               H.C. Curtis 401 (6 May 2006)
Carex retroflexa Muhl. ex Willd.     H.C. Curtis 272 (23 May 2004)
Carex shortiana Dewey                W.E. Thomas 1329 (8 May 2004)
Carex stipata Muhl. ex Willd.        W.E. Thomas 1383 (20 May 2004)
(*) Centaurea stoebe L.              H.C. Curtis 313 (11 Jul 2004)
(*) Ceratocephala testiculata        W.E. Thomas 1887 (21 Apr 2005)
  (Crantz) Roth
Coreopsis lanceolata L.              W.E. Thomas 2724 (26 May 2007)
                                     H.C. Curtis 265 (20 May 2004)
Coreopsis tinctoria Nutt.            H.C. Curtis 314 (12 Jul 2004)
Cuscuta coryli Engelm.               W.E. Thomas 2219 (3 Oct 2005)
Cuscuta indecora Choisy (SE)         W.E. Thomas 2237 (8 Oct 2005)
Cuscuta obtusii lora Kunth var.      Thomas, Taylor & Maxwell 2132
  glandulosa Engelm.                 (22 Aug 2005)
Cuscuta pentagona Engelm. var.       W.E. Thomas 2070 (30 Jul 2005)
Cuscuta polygonorum Engelm.          W.E. Thomas 2110 (12 Aug 2005)
                                     W.E. Thomas 1766 (14 Sep 2004)
                                     W.E. Thomas 2238 (8 Oct 2005)
Cyperus acuminatus Torr. & Hook.     W.E. Thomas 3012 (31 Jul 2008)
  ex Torr. (WL)                      W.E. Thomas 2462 (9 Aug 2006)
Cyperus erythrorhizos Muhl.          H.C. Curtis 390 (9 Oct 2005)
Cyperus squarrosus L.                W.E. Thomas 2108 (12 Aug 2005)
                                     W.E. Thomas 2117 (13 Aug 2005)
                                     W.E. Thomas 2041 (9 Jul 2005)
                                     W.E. Thomas 2107 (10 Aug 2005)
Diodia virginiana L. (WL)            W.E. Thomas 1618 (15 Aug 2004)
                                     W.E. Thomas 2620 (8 Oct 2006)
                                     W.E. Thomas 2141 (27 Aug 2005)
                                     W.E. Thomas 2126 (18 Aug 2005)
                                     W.E. Thomas 1024 (9 Aug 2003)
Eleocharis palustris (L.)            W.E. Thomas 2090 (3 Aug 2005)
  Roem. & Schult.
Euphorbia spathulata Lam. (SE)       W.E. Thomas 2349 (4 Jun 2006)
(*) Fatoua villosa (Thunb.) Nakai    Thomas & Maxwell 605 (30 Sep 2002)
                                     W.E. Thomas 2587 (16 Sep 2006)
Floerkea proserpinacoides Willd.     R.H. Maxwell 2243 (17 Apr 1985)
                                     H.C. Curtis 13 (20 Apr 2003)
Geum virginianum L.                  R.H. Maxwell 1483 (18 Jun 1977)
Helianthus grosseserratus M.         W.E. Thomas 3104 (9 Sep 2008)
(*) Heliotropium indicum L.          W.E. Thomas 2223 (4 Oct 2005)
                                     W.E. Thomas 1670 (21 Aug 2004)
(*) Hibiscus trionum L.              J. Swarens 82 (13 Jul 1976)
Humulus lupulus L.                   W.E. Thomas 2018 (27 Jun 2005)
                                     W.E. Thomas 2035 (8 Jul 2005)
Huperzia lucidula (Michx.)           W.R. Adams 126 (20 Jun 2007)
(*) Hydrilla verticillata (L.f.)     W.E. Thomas 3122 (22 Sep 2008)
Hvdrocotyle ranunculoides L. f.      W.E. Thomas 2853 (15 Sep 2007)
(*) Impatiens balsamina L.           H.C. Curtis 322 (30 Aug 2004)
(*) Ipomoea quamoclit L.             W.E. Thomas 2489 (20 Aug 2006)
(*) Kickxia elatine (L.) Dumort.     Bickley, Campbell & Huth 2
                                     (23 Jul 2007)
(*) Kyllinga gracillima Miq.         W.E. Thomas 3058 (18 Aug 2008)
                                     W.E. Thomas 2209 (30 Sep 2005)
                                     W.E. Thomas 3148 (20 Oct 2008)
Kyllinga pumila Michx.               W.E. Thomas 2214 (3 Oct 2005)
Lipocarpha micrantha (Vahl.)         W.E. Thomas 2212 (3 Oct 2005)
  G. Tucker
Ludwigia leptocarpa (Nutt.)          W.E. Thomas 2218 (3 Oct 2005)
  H. Hara
(*) Mazus pumilus (Burm. f.)         W.E. Thomas 2614 (2 Oct 2006)
  Steenis                            W.E. Thomas 3145 (18 Oct 2008)
Myosurus minimus L.                  W.E. Thomas 1886 (21 Apr 2005)
Najas gracillima                     W.E. Thomas 2144 (29 Aug 2005)
  (A. Braun ex Engelm.)
Magnus (ST)                          W.E. Thomas 2054 (17 Jul 2005)
Paspalum fluitans (Ell.) Kunth       W.E. Thomas 3068 (20 Aug 2008)
Platanthera clavellata (Michx.)      W.E. Thomas 2453 (3 Aug 2006)
  Luer (WL)
Platanthera lacera G. Don            W.E. Thomas 2375 (19 Jun 2006)
(*) Poa trivialis L.                 H.C. Curtis 303 (13 Jun 2004)
Polygonum amphibium L.               W.R. Adams 151 (15 Jul 2008)
Proserpinaca palustris L.            W.E. Thomas 2960 (6 Jun 2008)
Prunus angustifolia Marshall         H.C. Curtis 343 (17 Apr 2005)
Pyrrhopappus carolinianus (Walter)   W.E. Thomas 2814 (18 Aug 2007)
(*) Ranunculus parviflorus L.        W.E. Thomas 2693 (10 May 2007)
                                     W.E. Thomas 2334 (19 May 2006)
                                     W.E. Thomas 2916 (22 Apr 2008)
Rhexia mariana L. var. mariana       W.E. Thomas 3013 (31 Jul 2008)
Rubus flagellaris Willd.             W.R. Adams 109 (15 Aug 2005)
Salvia refexa Hornem.                W.R. Adams 119 (22 Aug 2006)
Schoenoplectus pungens (Vahl)        W.E. Thomas 2059 (20 Jul 2005)
Schoenoplectus purshianus (Fern.)    W.E. Thomas 2812 (18 Aug 2007)
  M. T.
Strong (SR)                          W.E. Thomas 2824 (22 Aug 2007)
                                     W.E. Thomas 1137 (13 Sep 2003)
                                     W.E. Thomas 2876 (24 Sep 2007)
Schoenoplectus smithii (A. Gray)     C.W. Henson 8 (31 Aug 1975)
  Sojdk (SE)
Schoenoplectus tabernaemontani       Ray Weatherholt 1574 (24 Jun 1969)
  (C.C. Gmel.) Palla
Scirpus georgianus Harper            W.E. Thomas 1469 (22 Jun 2004)
(*) Senecio vulgaris L.              W.E. Thomas 730 (18 Apr 2003)
(*) Sherardia arvensis L.            R.B. Lyons 1 (15 Jun 2008)
                                     W.E. Thomas 2003 (19 Jun 2005)
                                     W.E. Thomas 2394 (2 Jul 2006)
Sibara virginica (L.) Rollins        W.E. Thomas 1198 (26 Mar 2004)
Strophostyles leiosperma             W.E. Thomas & R. Lyons 3017
  (Torr. & A. Gray) Piper (ST)       (1 Aug 2008)
Thelypteris noveboracensis (L.)      W.R. Adams 111 (22 Aug 2005)
Triadenum tubulosum (Walter)         W.R. Adams 132 (18 Aug 2007)
Veronica anagallis-aguatica L.       W.E. Thomas 2111 (12 Aug 2005)
(*) Vicia tetrasperma (L.) Schreb.   W.E. Thomas 1986 (13 Jun 2005)
Woodwardia areolata (L.) T. Moore    W.R. Adams 131 (14 Jul 2007)
Zannichellia palustris L. (SR)       W.E. Thomas 2968 (7 Jun 2008)
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Author:Thomas, William E.; Maxwell, Richard H.
Publication:Proceedings of the Indiana Academy of Science
Article Type:Report
Geographic Code:1USA
Date:Jul 9, 2009
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