Cerastium sp. (chickweed) Caryophyllaceae (5 5 10 5) --

Cerastium viscosum (clammy chickweed) 102 -- seps w long hairs; OE ellip

Cerastium vulgatum (mouse-ear chickweed) 102 -- OE ellip lvs&stem hairy; lvs sessile, ellip pets abt as long as the sep

Ceratophyllaceae (hornwort) -- Ceratophyllum (hornwort)

Ceratophyllum demersum (hornwort) Ceratophyllaceae (0 8-15 10-20 0/ 0 8-15 0 1 hypo)044 -- teeth on lvs; sessile branches

Ceratophyllum echinatum (hornwort) Ceratophyllaceae 044 -- very slender teeth; lvs more flaccid; sessile branches Cercidiphyllum japonicum (katsura tree) Cercidiphyllaceae -- dioecious; round lvs w/ sl scalloped edges to 4"; glabrous, dk green/glaucescent

Cercis canadensis (redbud) Caesalpiniaceae (5 5 10 1 perf/unisex; peri) 256 -- rose-purple fls in small umbels; AE lvs roundly heart-shaped, ptd

Chaenorrhinum minus (dwarf snapdragon) Scrophulariaceae/Antirrhineae ((5) (5) 4 1 stigma 1) 449 -- blue or lilac 1/4" short basal spur Chaerophyllum bulbosum Apiaceae (5 5 5 2) 348 -- 10-20 rays; casual along Atlantic

Chaerophyllum procumbens (spreading chervil) Apiaceae (5 5 5 2) 348 -- 1-3 rays; moist woods, alluvial soil

Chaerophyllum temulum Apiaceae (5 5 5 2) 348 -- 6-10 rays; casual along Atlantic

Chamaecrista fasciculata (partridge pea) Caesalpiniaceae (5 5 10 1 perf/unisex; peri) 256

Chamaecrista nictitans (wild sensitive plant) Caesalpiniaceae (5 5 5 1 perf/unisex; peri) 257 -- 5 5 5 1 Chamaecyparis thyoides (atlantic white cedar) Cupressaceae 035 -- fleshy cones

Chamaedaphne calyculata (leatherleaf) Ericaceae ((5) 5 10 1) 189 -- lvs dull green over rusty spots

Chamaelirium luteum (devil's bit) Liliaceae (3 3 6 3) 787 --

Chara vulgaris (a stonewort -- green algae) bears red repro structures at leaf nodes; often covered w a thick, brittle limy crust Chasmanthium latifolium (wild oats) Poaceae 731 -- spikelets like Briza, but green; lvs wide; moist woods & streambanks

Chasmanthium laxum Poaceae 731 --

Cheilanthes lanosa (woolly lip fern) Adiantaceae 015 -- barely thrice-cut; alt/opp; very hairy fern

Chelidonium majus (celandine) Papaveraceae (4 2 N 1) 064 -- AD irreg lobe lflts; juice yellow

Chelone glabra (white turtlehead) Scrophulariaceae/Scrophularieae ((5) (5) 4+1 1 stigma 1) 443 -- white fls; OT lrg, lance; swamps & stream banks Chenopodiaceae (goosefoot) -- Axyris; Atriplex; Bassia; Chenopodium; Corispermum; Cycloloma; Kochia; Monolepis; Salicornia; Salsola; Suaeda Chenopodium album (pigweed goosefoot) (0 5 5 2+sup ) 089 -- AT chevron; whitish or grayish beneath

Chenopodium ambrosioides (Mexican tea goosefoot) (0 5 5 2+sup ) 086 -- AT lvs aromatic w/ minute yllw glnds, wavy to dply cut

Chenopodium berlandieri (pitseed goosefoot) (0 5 5 2+sup) 089 --

Chenopodium bonus-henricus (good King Henry goosefoot) (0 4or5 5 2+sup) 087 --

Chenopodium botrys (Jerusalem oak goosefoot) (0 5 5 2+sup) 087 -- AT aromatic, 1-2" long, coarse, blunt; fl spikes not leafy

Chenopodium capitatum (strawberry blite goosefoot) (0 3 5 2+sup) 087 -- grnish fls in rnd heads; fr br red; AT arrow-head shaped

Chenopodium glaucum (oak-leaved goosefoot) (0 5 3 2+sup) 087 -- AT 1-2" long, whitish or grayish beneath; sprawling/prostrate

Chenopodium graveolens (strong-smelling goosefoot) (0 5 5 2+sup) 087 --

Chenopodium multifidum (0 5 5 2+sup) 086 --

Chenopodium murale (nettle-leaved goosefoot) (0 5 5 2+sup) 088 --

Chenopodium polyspermum (many-seeded goosefoot) (0 5 5 2+sup) 088 --

Chenopodium pumilio (0 5 5 2+sup) 087 --

Chenopodium rubrum (coast blite goosefoot) (0 5 3 2+sup) 087 -- AT egg-shaped, coarsely-toothed; salt marshes

Chenopodium simplex (maple-leaved goosefoot) (0 5 5 2+sup) 088 -- AT broadly triangular w 2-6 large teeth; woods & clearings

Chenopodium sp. (goosefoot) Chenopodiaceae --

Chenopodium standleyanum (woodland goosefoot) (0 5 5 2+sup) 088 --

Chenopodium urbicum (city goosefoot) (0 5 5 2+sup) 088 --

Chenopodium vulvaria (stinking goosefoot) (0 5 5 2+sup) 088 -- Chimaphila maculata (striped wintergreen) Pyrolaceae (5 5 10 1 hypo) 195 -- lvs lance w/ white stripe

Chimaphila umbellata (pipsissewa) Pyrolaceae (5 5 10 1 hypo) 195 -- lvs oblance w/ no white stripe

Chionanthus virginicus (fringe tree) Oleaceae ((4) (4) 2 1 hypo) 435 -- fls white in drooping clusters; lvs OE oval or oblong

Chloris verticillata (windmill finger grass) Poaceae 747

Chloris virgata (feather finger grass) Poaceae 747 --

Chondrilla juncea (skeleton weed) Asteraceae/Lactuceae 599 --

Chorispora tenella (blue mustard) Brassicaceae (4 4 4+2 1) 179 -- fls blue-prpl; lvs sl lobed; fr stack of round beads w long beak Chrysanthemum balsamita (costmary daisy) Asteraceae/Anthemideae 519 -- sev heads; rays wanting; lvs highly lobed

Chrysanthemum leucanthemum (ox-eye daisy) Asteraceae/Anthemideae 518 -- few heads; white rays

Chrysanthemum nipponicum (Nippon daisy) Asteraceae/Anthemideae 518 -- few heads; white rays; shrub

Chrysanthemum parthenium (fever few daisy) Asteraceae/Anthemideae 518 -- sev heads; white rays

Chrysanthemum segetum (corn daisy) Asteraceae/Anthemideae 518 -- few heads; yellow rays

Chrysogonum virginianum (gold star) Asteraceae/Heliantheae 513 --

Chrysosplenium americanum (golden saxifrage) Saxifragaceae (0 4 4-8 2 peri) 217 -- forms mats in springy pls.; OT obscurely, roundish Chrysopsis falcata (falcate golden aster) 530 -- AE very narrow, rather stiff, often curved; stem white woolly

Chrysopsis mariana (Maryland or shaggy golden aster) 530 -- AE oblong or lance; stem silky when young

Chrysopsis sp. (golden aster) Asteraceae/Astereae -- fl rays widest in middle, yellow disc; AE sessile; dry sandy soil

Chrysopsis villosa (villous golden aster) 530 --

Cichorium intybus (chicory) Asteraceae/Lactuceae 599 -- blue fls

Cicuta bulbifera (bulb-bearing water hemlock) Apiaceae (5 5 5 2) 355 --

Cicuta maculata (common water hemlock) Apiaceae (5 5 5 2) 355 --

Cimicifuga racemosa (bugbane) Ranunculaceae (0 4-5 N 1orX) 046 --poisonous

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