AMMIACEAE 965 
9. E. Ravenelii A. Gray. Stem 5-10 dm. tall: blades of the lower leaves 
MI elongate-linear, 25-50 em. long, undulate or Sd o heads 
becoming 1-1.5 em. long: sepals ovate or ovate-lance 2—3 . long, 
short-acuminate: petals 1.5-2 mm. long: fruit Bon 2— dx mm. er TE. Met- 
taueri Wood |—Swampy mindande. Coastal Plain, Fla. to 3. C.—Sum.-fall. 
eee Bu Stem 4—9 dm. c B of the lower leaves 
ipti O ut m. 
i p a 1.5 mm. long, a cute: T als 1-1.3 mm. long: fruit 
ng: 
1.5-2 mm. long. LE: virgatum Lam. or ee ae Plain and rarely 
adj. provinces, Fla. to Tex., Tenn., and N. C—Sum 
«Li cianum Morong. Stem more dd Dis in E. integrifolium: 
blades of nee lower leaves linear-spatulate, 3-7 ae Vd e 
heads depressed, less than 1 em. lon ng at maturi NE pi , 1-1.5 m ong, 
abruptly pointed: petals 1-1.5 mm. long: ian about 1 mm. En ong ow ic 
lands, Coastal Plain, Ga. to Tex — smn m.—fal 
2. SANICULA [Tourn.] L. Biennial or perennial, glabrous or nearly 
glabrous herbs. Leaves alternate: blades pinnatifid or palmately 3—7-foliolate: 
leaflets toothed or ineised. mbels irregular, compound, few-rayed. Bracts of 
the involueres resembling the leaves. Sepals 5, persistent. Petals white, yel- 
lowish, or purpl Fruit subglobose or en somewhat dorsally flattened, 
armed with hooked bristles: carpels ribless: oil-tubes usually 5.—About 25 
species, of wide geographic distribution.—Spr.-fall.—SNAKE-ROOTS. BLACK 
SNAKE-ROOTS SANICLES.—Some species are used in medicine. 
Perennial plants: stamens and style exsert 
Roots slender: leaf-blades 5-divided ua 5- Er olrdinsO A and Styles exserted. 
etals and anthers greenish-white: sepals linear-subu lat 
fruit about 6 mm. long. 
pes E pd anthers yellow: sepals ovate: fruit about 3 
2. S. gregaria. 
E 
. S. marylandica. 
Roots tuberous ‘thickened : ee blades 3-divided or 3-foliolate: 
stamens and style short-exserted. 3. S. Smallii. 
Biennial Dn stamens and style include A 
Pedicels of the staminate flowers 3-4 times the length of the 
hypanthium and calyx: a with 2 pam oil tubes. 4. S. trifoliata. 
‘ e 
hypanthium and calyx: seed with 5 mate oil- tubes. 
Leaf-blades becoming 8-15 cem. udi leaflets or leaf- 
segments thin, the teeth weakly aculeate. 5. S. canadensis. 
Leaf-blades mostly less than 6 em. bud. leaflets or leaf- 
segments thickish, the teeth spinulose-cuspi idate. 6. S. floridana. 
1. S. marylandica L. Stem 4.5-13 dm. tall, mostly simple below the infio- 
rescence: leaves bluish- Ne m of seale- like bractlets: petals slightly 
longer than the sepals: fruit obovoid, 
not  stipitate.— ( BLACK-SNAKEROOT.) —Hieh 
woods and thickets, various provinces, Ga. to 
Miss., Colo., Alb., Ont t.; and Newf. 
. gregaria Bicknell. Stem 3-9 tall, 
widely branched: leaves bright-gre "n 
volueels of foliaceous pus uie. m 
longer than the sepals: broadly ob- 
ovoid, stipitate.—Moist w m and thickets, 
various provinees, rarely Coastal Plain, Fla. 
to Kans., Nebr., Wis., and Vt. 
S. Smallii Bicknell. be 2.5-6 s tall, 
wW idely branched: lea pale-green: in- 
volucels of very E E actlets: Ta 
