Quercus lyrata - 7-1-05
Ranunculus abortivus - 2-7-06
Ranunculus bulbosus - 9-27-03
Ranunculus fascicularis - 9-22-04
Ranunculus harveyi - 9-22-04
Ranunculus hispidus - 1-29-06
Ranunculus micranthus - 12-9-04
Ranunculus parviflorus - 2-21-06
Ranunculus recurvatus - 6-27-02
Ranunculus sardosus - 2-7-06
Ranunculus sceleratus - 11-08-00
Ranunculus septentrionalis - 5-10-04
Raphanus raphanistrum - 2-7-06
Raphanus sativus - 1-19-04
Ratibida columnifera - 2-2-05
Ratibida pinnata - 2-2-05
Rhamnus lanceolata - 2-2-05
Rhexia mariana - 2-22-05
Rhexia virginica - 2-23-05
Rhus aromatica - 2-2-05
Rhus copallina - 2-2-05
Rhus glabra - 11-9-03
Rhus toxicodendron - 11-16-05
Rhus typhina - 11-9-03
Rhynchospora globularis - 9-27-04
Ribes missouriense - 2-20-05
Ribes odoratum - 12-16-04
Ricinus communis - 1-22-04
Robinia hispida - 12-13-04
Robinia pseudo-acacia - 5-20-04
Rorippa islandica - 1-5-03
Rorippa sessiliflora - 11-2-06
Rorippa sinuata - 12-04-00
Rorippa sylvestris - 9-28-04
Rosa carolina - 11-8-03
Rosa multiflora - 3-1-02
Rosa rugosa - 05-10-00
Rosa setigera - 9-28-04
Rotala ramosior - 12-28-05
Rubus allegheniensis
Rubus argutus - 1-29-06
Rubus flagellaris - 05-28-00
Rubus occidentalis - 11-14-05
Rudbeckia fulgida - 11-23-03
Rudbeckia hirta - 6-2-03
Rudbeckia laciniata - 8-9-03
Rudbeckia missouriensis - 8-17-03
Rudbeckia subtomentosa - 12-31-00
Rudbeckia triloba - 11-18-03
Ruellia humilis - 12-12-03
Ruellia pedunculata - 6-1-03
Ruellia strepens - 3-1-02
Rumex acetosella - 9-27-03
Rumex altissimus - 1-25-03
Rumex crispus - 6-15-03
Rumex hastatulus - 4-21-05
Rumex obtusifolius - 1-31-03
Rumex pulcher - 6-7-06
Sabatia angularis - 7-17-03
Sabatia angularis f. albiflora - 1-3-02
Sagina decumbens - 2-8-06
Sagittaria latifolia - 11-30-03
Sagittaria montevidensis
Salix interior - 12-16-04
Salvia azurea - 1-30-06
Salvia farinacea - 8-24-04
Salvia lyrata - 10-21-05
Salvia reflexa - 9-21-06
Sambucus canadensis - 4-28-04
Samolus parviflorus - 2-2-05
Sanguinaria canadensis - 3-16-03
Sanicula canadensis - 1-30-03
Sanicula gregaria - 2-3-05
Sanicula smallii - 1-29-03
Saponaria officinalis - 6-27-03
Sassafras albidum - 1-21-06
Satureja arkansana - 10-4-03
Saururus cernuus - 8-22-02
Saxifraga pensylvanica - 10-28-04
Saxifraga texana - 4-9-04
Saxifraga virginiensis - 4-11-03
Schoenoplectus pungens - 2-3-05
Schrankia uncinata - 10-9-03
Scilla siberica - 5-10-04
Scirpus atrovirens - 1-24-04
Scirpus pendulus - 1-24-04
Scleranthus annuus - 4-12-03
Scleria ciliata - 12-29-05
Scleria triglomerata - 12-29-05
Scrophularia marilandica - 2-3-05
Scutellaria bushii - 1-7-04
Scutellaria elliptica - 5-31-03
Scutellaria incana - 8-9-03
Scutellaria lateriflora - 11-5-02
Scutellaria ovata - 1-29-01
Scutellaria parvula - 5-24-03
Sedum pulchellum - 9-27-03
Sedum telephium
Sedum ternatum - 9-27-03
Selenia aurea - 4-14-04
Senecio aureus - 2-3-05
Senecio glabellus - 2-17-06
Senecio obovatus - 3-3-02
Senecio plattensis - 2-3-05
Senecio vulgaris - 4-2-03
Setaria faberi - 12-13-03
Setaria viridis - 11-15-03
Seymeria macrophylla - 11-15-03
Sherardia arvensis - 5-19-05
Sibara virginica - 12-14-04
Sicyos angulatus - 11-23-03
Sida spinosa - 2-28-05
Silene antirrhina - 1-7-04
Silene cucubalus - 1-21-03
Silene regia - 8-19-03
Silene stellata - 2-21-06
Silene virginica - 10-3-02
Silphium asteriscus - 10-4-03
Silphium integrifolium - 2-2-03
Silphium laciniatum - 11-14-05
Silphium perfoliatum - 9-25-03
Silphium terebinthinaceum -9-19-03
Sisymbrium altissimum - 12-16-04
Sisymbrium loeselii - 11-30-00
Sisyrinchium albidum - 11-2-06
Sisyrinchium campestre - 2-6-05
Sium suave - 9-16-02
Smilacina racemosa - 2-20-03
Smilax pulverulenta - 12-13-03
Solanum americanum - 7-20-03
Solanum carolinense - 11-30-03
Solanum dulcamara - 11-30-03
Solanum rostratum - 11-23-03
Solanum sarachoides - 1-6-01
Solidago altissima - 10-31-06
Solidago flexicaulis - 2-5-05
Solidago graminifolia - 1-02-00
Solidago juncea - 11-30-03
Solidago nemoralis - 7-2-05
Solidago petiolaris - 11-27-04
Solidago ptarmicoides - 9-26-03
Solidago radula - 12-13-03
Solidago rigida - 11-30-03
Solidago rugosa - 1-22-06
Sonchus arvensis - 8-26-04
Sonchus asper - 7-2-05
Sorghum bicolor - 2-27-05
Sorghum halepense - 12-14-03
Sparganium americanum - 1-5-03
Specularia biflora - 5-14-05
Specularia leptocarpa - 9-29-03
Specularia perfoliata - 9-27-03
Spergula arvensis - 6-11-06
Spigelia marilandica - 12-30-05
Spiraea prunifolia - 2-5-04
Spiranthes cernua - 7-19-05
Spiranthes lacera - 1-20-06
Spiranthes ovalis - 11-30-03
Spiranthes tuberosa - 11-28-00
Spiranthes vernalis - 2-24-06
Stachys byzantina - 10-4-03
Stachys tenuifolia - 7-9-03
Staphylea trifolia - 12-13-04
Stellaria media - 2-16-03
Stellaria pubera - 4-19-03
Stenanthium gramineum - 12-14-03
Stylophorum diphyllum - 4-15-04
Strophostyles helvola - 1-24-03
Strophostyles umbellata - 12-23-05
Stylosanthes biflora - 10-4-03
Symphyotrichum drummondii - 10-21-06
Talinum calycinum - 12-30-05
Talinum parviflorum - 12-30-05
Taenidia integerrima - 1-25-03
Tanacetum vulgare - 12-16-00
Taraxacum erythrospermum - 3-17-03
Tephrosia virginiana - 6-3-03
Teucrium canadense - 12-14-03
Thalictrum dasycarpum - 2-21-01
Thalictrum dioicum - 4-19-03
Thaspium barbinode - 11-26-03
Thlaspi alliaceum - 1-31-04
Thlaspi arvense - 12-17-04
Thlaspi perfoliatum - 3-12-04
Tilia americana - 3-12-04
Tipularia discolor - 10-26-02
Torilis japonica - 10-4-03
Toxicodendron radicans - 1-29-06
Tradescantia ernestiana - 3-16-02
Tradescantia ohiensis - 12-30-05
Tradescantia ozarkana - 05-27-00
Tradescantia subaspera - 7-20-03
Tradescantia virginiana - 12-17-04
Tragia cordata - 7-12-03
Tragia urticifolia - 11-26-03
Tragopogon dubius - 6-2-03
Trautvetteria caroliniensis - 6-18-06
Trichostema dichotomum - 12-29-05
Trichostema setaceum - 11-28-04
Trifolium arvense - 1-7-04
Trifolium campestre - 11-19-05
Trifolium hybridum - 5-14-04
Trifolium incarnatum - 10-30-03
Trifolium pratense - 9-27-03
Trifolium reflexum - 7-30-04
Trifolium repens - 10-4-03
Trifolium resupinatum - 11-19-05
Trillium flexipes - 12-20-04
Trillium nivale - 3-20-04
Trillium recurvatum - 12-20-04
Trillium sessile - 12-20-04
Tripsacum dactyloides - 12-31-05
Triosteum perfoliatum - 11-1-03
Triphora trianthophora - 7-29-04
Triticum aestivum - 6-15-03
Uniola latifolia - 12-14-03
Uvularia grandiflora - 12-20-04
Uvularia sessilifolia - 11-1-03
Vaccinium arboreum - 2-28-05
Vaccinium stamineum - 11-21-05
Vaccinium vacillans - 2-28-05
Valerianella olitoria - 2-6-04
Valerianella radiata - 2-1-04
Veratrum woodii - 2-28-05
Verbascum blattaria f. blattaria - 11-23-05
Verbascum blattaria f. erubescens - 9-27-03
Verbascum thapsus - 12-14-03
Verbena bracteata - 9-20-03
Verbena canadensis - 9-20-03
Verbena hastata - 7-31-03
Verbena simplex - 9-27-03
Verbena stricta - 12-14-03
Verbena urticifolia - 7-30-04
Verbesina alternifolia - 9-20-03
Verbesina helianthoides - 1-25-04
Verbesina virginica - 11-26-03
Vernonia altissima - 11-27-04
Vernonia baldwinii - 11-11-03
Vernonia crinita - 11-15-03
Veronica arvensis - 4-19-03
Veronica comosa - 9-29-04
Veronica peregrina - 4-3-03
Veronica serpyllifolia - 10-19-02
Veronica spicata - 12-13-00
Veronicastrum virginicum - 7-29-04
Viburnum dentatum - 05-10-00
Viburnum opulus - 05-10-00
Viburnum opulus - "Snowball"
Viburnum plicatum - 12-13-00
Viburnum prunifolium - 12-21-04
Viburnum rhytidophyllum - 05-20-00
Viburnum rufidulum - 12-22-04
Vicia caroliniana - 1-7-02
Vicia dasycarpa - 5-24-03
Vicia grandiflora - 11-21-05
Vicia sativa - 1-19-04
Vicia tetrasperma - 11-24-05
Vicia villosa - 12-31-00
Vicia villosa f. albiflora - 12-31-00
Vinca major - 3-25-03
Vinca minor - 3-25-03
Viola kitaibeliana - 5-25-03
Viola missouriensis - 12-22-04
Viola papilionacea - 12-22-04
Viola papilionacea f. alba - 4-5-03
Viola pedata - 12-22-04
Viola pensylvanica - 3-28-04
Viola sororia - 11-8-03
Viola striata - 5-25-03
Viola tricolor - 5-25-03
Viola triloba - 1-4-02
Vitis rupestris - 9-2-04
Yucca glauca - 1-22-04
Yucca smalliana - 7-29-04
Zigadenus elegans - 2-14-04
Zizia aurea - 12-13-00