Carex typhina (212.cattail sack sedge) 687 -- 3; teeth well-dev; genie bottle w toothed beak; cylindrical, leafy bracts; Squarrosae
Carex umbellata (102.umbelled sack sedge) 673 -- end cluster; Montaneae;
Carex utriculata (218.bottle-shaped sack sedge) 665 -- Vesicariae; wet soil or shallow water
Carex vaginata (114.sheathed sack sedge) 674 -- elongated, sl, bracts; Paniceae;
Carex venusta (150.graceful sack sedge) 679 --
Carex vesicaria (216.bladder sack sedge) 688 -- Vesicariae;
Carex vestita (170.clothed sack sedge) 682 -- Hirtae
Carex virescens (160.greenish sack sedge) 680 --
Carex viridula (153.greenish sack sedge) 679 --
Carex vulpinoidea v. ambigua (33.fox-like sack sedge) 665 -- lvs do not surpass infl; the old C. annectans
Carex vulpinoidea v. vulpinoidea (33.fox-like sack sedge) 665 -- 2; teeth well dev; lvs surpass infl
Carex wiegandii (52.Wiegand's sack sedge) 667 --
Carex willdenowii (90.Willdenow's sack sedge) 672 --solitary, unruly; Phyllostachyae; moist woods, esp in acid soils; chfly coastal
Carex woodii (113.woods sack sedge) 674 -- elongated, sl, bracts; Paniceae;
Carlina vulgaris (carlina) Asteraceae/Cynareae 584 --
Carpinus caroliniana (musclewood) Betulaceae 082 -- muscular-looking bark
Carum carvi Apiaceae (5 5 5 2) 348 --
Carya cordiformis (bitternut hickory) Juglandaceae 073 -- lflts 5-11; buds sulfur-yellow; frs smallest
Carya glabra (pignut hickory) Juglandaceae 074 -- lflts 5-7; fr small, w 4 sl. wings; upland woods
Carya lacinosa (shellbark hickory) Juglandaceae
Carya ovata (shagbark hickory) Juglandaceae 074 -- lflts 5-7
Carya tomentosa (mockernut hickory) Juglandaceae 073 -- lflts 7-9; silvery buds
Caryophyllaceae (pink) evident stipules -- Herniaria; Paronychia; Spergula; Spergularia
Caryophyllaceae seps distinct -- Arenaria; Cerastium; Holosteum; Honckenya; Sagina; Scleranthus; Stellaria Caryophyllaceae seps form tube -- Agrostemma; Dianthus; Gypsophila; Lychnis; Petrorhagia; Saponaria; Silene;Vaccaria
Castanea dentata (American chestnut) Fagaceae 076 --
Castilleja coccinea (painted cup) Scrophulariaceae/Euphrasieae ((5) (5) 2+2 1 stigma 1) 458 --
Castilleja septentrionalis Scrophulariaceae/Euphrasieae ((5) (5) 2+2 1 stigma 1) 458 --
Castilleja sessiliflora Scrophulariaceae/Euphrasieae ((5) (5) 2+2 1 stigma 1) 458 --
Catalpa bignonioides (southern catalpa) Bignoniaceae ((5) (5) 2+2 1 hypo) 462 --
Catalpa speciosa (northern catalpa) Bignoniaceae ((5) (5) 2+2 1 hypo) 461 -- lvs hairy below
Caulophuyllum thalictroides (blue cohosh) Berberidaceae (6 6 6 1) 062 --
Ceanothus americanus (New Jersey tea) Rhamnaceae (5 5 5 1) 321
Ceanothus herbaceus Rhamnaceae (5 5 5 1) 321 --
Cedrus atlanticus (Atlas cedar)
Celastrus orbiculatus (Asian bittersweet) Celastraceae (5 5 5 0/5 5 0 1) -- 308 -- axillary clusters, lvs rounded
Celastrus scandens (American bittersweet) Celastraceae (5 5 5 0/5 5 0 1) 308 -- fls in terminal clusters; lvs finely toothed & pointed Celastraceae (bittersweet) -- Celastrus, Euonymus
Celtis laevigata (hackberry) Ulmaceae 069
Celtis occidentalis (northern hackberry) Ulmaceae 069
Celosia argentea (celosia) Acanthaceae (0 5 5 1) --
Cenchrus longispinus (common sandbur) Poaceae 769 -- spines slender, numerous, 45-75; widespread
Cenchrus tribuloides (dune sandbur) Poaceae 770 -- spines broader at base, fewer, 40 or less; coastal
Centaurea americana (knapweed) 585 --
Centaurea calcitrapa (purple-star thistle knapweed) 586 -- invol bracts spine-tipped
Centaurea cyanus (knapweed) 584 -- stem hairy; fls mostly blue
Centaurea diffusa (tumble knapweed) 585 -- invol bracts spine-tipped; white fls
Centaurea dubia (short-fringed knapweed) 585 -- old C. vochinensis; bl tips; marginal fls enlarged & ray-like
Centaurea jacea (brown knapweed) 584 -- tan or brown tips
Centaurea maculosa (spotted knapweed) 585 -- AD; black-fringed bracts; lvs divided
Centaurea melitensis (Maltese star thistle knapweed) 586 -- invol bracts spine-tipped; lf bases wing stem; stem hry; fls yellow
Centaurea nigra (black knapweed) 585 -- black tips
Centaurea repens (Russian knapweed) 585 --
Centaurea solstitialis (yellow star thistle) 586 -- invol bracts spine-tipped; stem hairy; fls yellow
Centaurea sp. (knapweed) Asteraceae/Cynareae -- Centaurium erythraea (forking centaury) Gentianaceae ((4-5) 4-5 4-5 1) 363 --
Centaurium pulchellum (branching centaury) Gentianaceae ((4-5) 4-5 4-5 1) 363 --
Centaurium spicatum (spike centaury) Gentianaceae ((4-5) 4-5 4-5 1) 363 --
Centunculus minimus (chaffweed) Primulaceae ((4) 4 4 1) 203
Cephalanthus occidentalis (buttonbush) Rubiaceae ((4) 4 4 1 epi) 471 -- white, tubular in round, ball-like heads; OE, egg
Cerastium arvense (field chickweed) (5 5 10 5) 102 -- OE lvs fat linear; stem hairy; pets much longer than sep; perennial
Cerastium brachypetalum (chickweed) (5 5 10 5) 102 -- seps w long hairs
Cerastium nutans (chickweed) (5 5 10 5) 103 -- OE fat linear
Cerastium semidecandrum (5 5 10 5) 103 -- OE ellip, small
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