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 "; 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