| Family |
Taxon |
Common Name | Photographs |
| Salicaceae |
Salix petiolaris Sm. |
meadow willow, slender willow |
|
| Salicaceae |
Salix purpurea L. |
basket willow, purple osier, purple willow |
|
| Salicaceae |
Salix X rubens Schrank (pro sp.) |
hybrid crack willow |
|
| Salicaceae |
Salix serissima (L.H.Bailey) Fernald |
autumn willow |
|
| Santalaceae |
Comandra umbellata (L.) Nutt. subsp. umbellata |
bastard-toadflax, false toadflax |
|
| Sarraceniaceae |
Sarracenia purpurea L. subsp. purpurea |
purple pitcher-plant |
|
| Saxifragaceae |
Heuchera richardsonii R.Br. |
prairie alumroot, Richardson's alumroot |
|
| Saxifragaceae |
Mitella diphylla L. |
bishop's-cap, two-leaf miterwort |
|
| Saxifragaceae |
Mitella nuda L. |
naked miterwort, small bishop's-cap |
|
| Saxifragaceae |
Parnassia glauca Raf. |
American grass-of-Parnassus, fen grass-of-Parnassus |
|
| Saxifragaceae |
Penthorum sedoides L. |
ditch stonecrop |
|
| Saxifragaceae |
Saxifraga pensylvanica L. |
eastern swamp saxifrage, swamp saxifrage, wild beet |
|
| Scrophulariaceae |
Agalinis gattingeri (Small) Small |
round-stem foxglove, round-stemmed false foxglove |
|
| Scrophulariaceae |
Agalinis purpurea (L.) Pennell |
purple false foxglove, smooth agalinis |
|
| Scrophulariaceae |
Agalinis tenuifolia (Vahl) Raf. |
common agalinis, common false foxglove |
|
| Scrophulariaceae |
Aureolaria grandiflora (Benth.) Pennell var. pulchra Pennell |
large-flowered yellow false foxglove |
|
| Scrophulariaceae |
Besseya bullii (Eaton) Rydb. |
bull's coral-drops, kitten's-tails |
|
| Scrophulariaceae |
Castilleja coccinea (L.) Spreng. |
Indian paintbrush, scarlet painted-cup |
|
| Scrophulariaceae |
Chaenorhinum minus (L.) Lange |
dwarf snapdragon, lesser toadflax, small snapdragon |
|
| Scrophulariaceae |
Chelone glabra L. |
turtlehead, white turtlehead |
|
| Scrophulariaceae |
Digitalis lanata Ehrh. |
Grecian foxglove |
|
| Scrophulariaceae |
Linaria vulgaris Mill. |
butter-and-eggs |
|
| Scrophulariaceae |
Melampyrum lineare Desr. |
narrow-leaved cow-wheat |
|
| Scrophulariaceae |
Melampyrum lineare Desr. var. americanum (Michx.) Beauverd |
American cow-wheat, narrow-leaved cow-wheat |
|
| Scrophulariaceae |
Mimulus ringens L. var. ringens |
Allegheny monkey-flower, monkey-flower |
|
| Scrophulariaceae |
Pedicularis canadensis L. subsp. canadensis |
Canadian lousewort, forest lousewort, wood-betony |
|
| Scrophulariaceae |
Pedicularis lanceolata Michx. |
fen betony, swamp betony, swamp-lousewort |
|
| Scrophulariaceae |
Penstemon hirsutus (L.) Willd. |
hairy beard-tongue, northeastern beard-tongue |
|
| Scrophulariaceae |
Scrophularia marilandica L. |
carpenter's-square, eastern figwort, late figwort |
|
| Scrophulariaceae |
Veronica anagallis-aquatica L. |
water speedwell |
|
| Scrophulariaceae |
Veronica austriaca L. subsp. teucrium (L.) D.A.Webb |
broad-leaf speedwell, wood-sage speedwell |
|
| Scrophulariaceae |
Veronica persica Poir. |
bird's-eye speedwell |
|
| Scrophulariaceae |
Veronica scutellata L. |
marsh speedwell, narrow-leaved speedwell, skullcap speedwell |
|
| Scrophulariaceae |
Veronicastrum virginicum (L.) Farw. |
Culver's-physic, Culver's-root |
|
| Selaginellaceae |
Selaginella eclipes W.R.Buck |
hidden spike-moss, northern meadow spike-moss |
|
| Selaginellaceae |
Selaginella rupestris (L.) Spring |
dwarf spike-moss, northern selaginella, rock spike-moss |
|
| Simaroubaceae |
Ailanthus altissima (Mill.) Swingle |
tree-of-heaven |
|
| Smilacaceae |
Smilax ecirrhata S.Watson |
upright carrion-flower |
|
| Smilacaceae |
Smilax illinoensis Mangaly |
Illinois carrion-flower, Illinois greenbrier |
|
| Smilacaceae |
Smilax lasioneura Hook. |
common carrion flower, hairy carrion-flower |
|
| Smilacaceae |
Smilax tamnoides L. |
bristly greenbrier, China root, hellfetter |
|
| Solanaceae |
Lycium barbarum L. |
matrimony-vine |
|
| Solanaceae |
Lycopersicon esculentum Mill. |
garden tomato |
|
| Solanaceae |
Nicandra physalodes (L.) Gaertn. |
apple-of-Peru |
|
| Solanaceae |
Physalis heterophylla Nees var. heterophylla |
clammy ground-cherry |
|
| Solanaceae |
Physalis virginiana Mill. var. virginiana |
lance-leaved ground-cherry, obedient plant, Virginia ground-cherry |
|
| Solanaceae |
Solanum dulcamara L. |
bittersweet nightshade, climbing nightshade, deadly nightshade |
|
| Solanaceae |
Solanum ptychanthum Dunal |
eastern black nightshade, West Indian nightshade |
|
| Solanaceae |
Solanum rostratum Dunal |
buffalo-bur, buffalo-bur nightshade |
|
| Sparganiaceae |
Sparganium eurycarpum Engelm. |
broad-fruit bur-reed, common bur-reed, giant bur-reed |
|