Symplocos tinctoria Araceae (spathe & spadix) 199
Syringa vulgaris (common lilac) Oleaceae ((4) (4) 2 1 hypo) 435 -- shrub; lilac, long trumpet shape; OE ovate, some cordate at base
Syringa x persica (persian lilac) Oleaceae ((4) (4) 2 1 hypo) -- shrub; smaller, narrower lvs tapering at base
T
Taenidia integerrima (yellow pimpernel) Apiaceae (5 5 5 2) 352 -- yellow fls; celery-like odor; dry woods, rocky ledges
Tagetes minuta (marigold)Asteraceae/Heliantheae 511 --
Tanecetum vulgare (common tansy) Asteraceae/Anthemideae 519 --
Taraxacum laevigatum (red-seeded dandelion) Asteraceae/Lactuceae 598 -- inner invol bracts; corniculate (hooded appendage) near the tip
Taraxacum officinale (dandelion) Asteraceae/Lactuceae 599 -- outer bracts narrow; arrowhead w/ wide lobes
Taraxacum spectabile (showy dandelion) Asteraceae/Lactuceae 599 -- outer bracts broader; stream-lined arrowhead lobes; rare Taxodiaceae (bald cypress) -- Taxodium (bald cypress)
Taxodium distichum (bald cypress) Taxodiaceae 034 --
Taxus baccata (English yew) Taxaceae 031 -- tree to 60'; lvs to 1.25" gradually acuminate; dk gr/pale; dioecious; needles point well-forward; fr red ½"; bark dk brown & rddsh, peeling
Taxus canadensis (American yew) Taxaceae 031 -- sftraggling shrub to 6'; lvs 1", abruptly ptd, dk yellowish-green above Teesdalia nudicaulis (shepherd's cress) Brassicaceae (4 4 4+2 1) 166
Tephrosia virginiana (goat's rue) Fabaceae (5 5 10 1 perf or unisex; peri) 261
Tetragonotheca helianthoides (square head) Asteraceae/Heliantheae 495 --
Teucrium botrys (germander) Lamiaceae ((5) (5) 2+2 1) 409 --
Teucrium canadense (American germander) Lamiaceae ((5) (5) 2+2 1) 408 -- purplish in spikes; OT lance/egg
Teucrium scorodonia (wood-sage germander) Lamiaceae ((5) (5) 2+2 1) 408 --
Thalictrum dasycarpum (purple meadow rue) 061 --
Thalictrum dioicum (early meadow rue) 060 -- lflts many lobed
Thallictrum pubescens (tall meadow rue) 060 -- lflts only 3 lobed
Thalictrum revolutum (waxy meadow rue) 060 -- lflts dk gr w waxy particles beneath w skunklike odor
Thalictrum sp. (meadow rue) Ranunculaceae (0 4-5 N 1 unisex) -- Thaspium barbinode (bearded meadow parsnip) Apiaceae (5 5 5 2) 353 --
Thaspium trifoliatum (smooth meadow parsnip) Apiaceae (5 5 5 2) 353 --
Thelypteris hexagonaptera (southern or broad beech fern) Aspleniaceae 023 -- rachis winged toward base
Thelypteris noveboracensis (New York beech fern) Aspleniaceae 023 -- "New Yorkers burn their candles at both ends"
Thelypteris palustris (marsh beech fern) Aspleniaceae 024 -- stalk black at base
Thelypteris phegopteris (northern beech fern) Aspleniaceae 022 -- rachis not winged at base
Thlaspi arvense (field pennycress) Brassicaceae (4 4 4+2 1) 166 -- fr. w/ no stake at all
Thlaspi perfoliatum (thoroughwort penny cress) Brassicaceae (4 4 4+2 1) 166 -- small stake
Thuja occidentalis (arbor vitae) Cupressaceae 035 -- lvs dark green/yellowish-green, ultimate branchlets very soft & flat; moist or wet soil, often in swamps
Thuja orientalis Cupressaceae
Thymelaeaceae (mezerum) -- Daphne (daphne), Dirca (leatherwood)
Thymus serpyllum (wild thyme) Lamiaceae ((5) (5) 2+2 1) 414 -- purple in dense terminal clusters; OE oblong/ egg
Tiarella cordifolia (foam flower) Saxifragaceae (5 5 10 1 peri) 214 -- white in term raceme; BT 5-7 shallow lobes
Tilia americana (American linden) Tiliaceae (5 5 N 1) 131 --
Tipularia discolor (cranefly orchis) Orchidaceae (2+1z 3 1-2 3) 826 -- greenish-pur;e fls w/ a long, slender spure, in racemes; NONE
Tofieldia glutinosa Poaceae 781 --
Tofieldia racemosa Poaceae 781 --
Torilis arvensis (field hedge parsley) Apiaceae (5 5 5 2) 350 --
Torilis japonica (Japanese hedge parsley) Apiaceae (5 5 5 2) 350 --
Toxicodendron pubescens (poison oak) Anacardiaceae (5 (5) 10 3 hypo) 335 --
Toxicodendron radicans (poison ivy) Anacardiaceae (5 (5) 10 3 hypo) 335 --
Toxicodendron vernix (poison sumac) Anacardiaceae (5 (5) 10 3 hypo) 335 -- Trachelospermum difforme Apocynaceae (5) (5) 5 1 hypo 368 --
Tradescantia ohiensis (smooth spiderwort) Commelinaceae (3 3 6 3 hypo) 620 --
Tradescantia subaspera (wide-leaved spiderwort) Commelinaceae (3 3 6 3 hypo) 619 --
Tradescantia virginiana (Virginia spiderwort) Commelinaceae (3 3 6 3 hypo) 619 --
Tragopogon dubius (fistulous goatsbeard) Asteraceae/Lactuceae 601 --
Tragopogon pratensis (showy goatsbeard) Asteraceae/Lactuceae 601 -- fl heads 1-2.5" wide on long stalks; AE grass like, clasping
Tragopogon porrifolius (vegetable-oyster goatsbeard) Asteraceae/Lactuceae 601 --
Tragus berteronianus Poaceae 768 --
Tragus racemosus Poaceae 768 --
Trapa natans (water chestnut) Trapaceae (4 (4) 4 1) 293 -- white fls; fr w 4 stout horns called a water chestnut; lvs chevron, toothed at top 2 sides Triadenum fraseri Clusiaceae (5 5 9 2-5) 130 -- seps at maturity 3-5mm
Triadenum virginicum (marsh st. johnswort) Clusiaceae (5 5 9 2-5) 130 -- seps at maturity 5-8mm
Trianthema portulacastrum Aizoaceae (0 5 5-10 1 p-e) 085 -- lvs fat spatulate
Tribulus terrestris (puncture vine) (4or5 4or5 8or10 1 hypo) 337 -- occ escape
Trichomanes boschianum (Appalachian bristle fern) Hymenophyllaceae 011 --
Trichostema dichotomum (blue curls) Lamiaceae ((5) (5) 2+2 1) 409 -- blue w exserted, coiling stamens; OE oblong/lance
48