ERIGENIA. LXVIL UMBELLIFER A. | 293 
leaves about 4” by 1”. Umbels quite irregular, often with leaves in the place 
of the involucre. Rays 1—4, 1—4-flowered, about 2’ long. Petals white. Apr. May. 
27. OSMORHIZA. Raf. 
Gr. oopn, perfume, piga, root; from the anisate, aromatic root. 
Calyx margin obsolete; petals oblong, nearly entire, the cuspidate 
point inflexed ; styles conical at base; fruit linear, very long, clavate, 
attenuate at base ; carpels with 5 equal, acute, bristly ribs; intervals 
without vittz; commissure with a deep, bristly channel.—% Lvs. 
biternately divided, with the umbels opposite. Invol. few-leaved ; involu- 
cels 4—7-leaved. F's. white. 
1. O. toneistytis. DC. (Uraspermum. Claytoni. Nutt.) Sweet Cicely. 
Sty. filiform, nearly as long as the ovary; fr. clavate——A leafy plant, 
very common in woods, Can. to Va., 1—3f high, with inconspicuous umbels 
of white flowers. Root branching, fleshy, of an agreeable, spicy flavor. Stem 
erect, branching above, nearly smooth. Root leaves on long, slender stalks, the 
upper stem leaves sessile, both decompound, the ultimate divisions often pin- 
nate; leaflets irregularly divided by clefts and sinuses into lobes and teeth, the 
lobes broadly ovate, slightly pubescent. Involucres of linear bracts longer than 
the rays. Fruit blackish, an inch in length, much more acute at the base than 
at the summit, crowned with the persistent styles. May, Jn. 
2. O. BrevisTYLis. DC. (U. hirsutum. Bw.) Short-styled Cicely. 
Sty. conical, scarcely as long as the breadth of the ovary; fr. somewhat 
tapering at the summit.—Common in woods, Can. to Penn. W. to Oreg. The 
general aspect of this species is very similar to that of the preceding, but the root 
is destitute of the anise-like flavor of that species, being disagreeable to the taste. 
The plant is more hairy, and with more deeply cleft divisions in the leaves. 
Involucre deciduous. Umbels with long, diverging rays, of which but few 
prove fertile. ‘The fruit is similar to the last, but crowned with convergent, not 
with spreading styles. May, Jn. 
28. CONIUM. 
Gr. kq@veétov, hemlock, from xwvos, a top; because it causes dizziness. 
Calyx margin obsolete; petals obcordate, with an acute, inflected 
point; fruit ovate, laterally compressed ; carpels with 5, acute, equal, 
undulate-crenulate ribs, lateral ones marginal ; intervals without vit- 
tee; seeds with a deep, narrow groove on the face—@ Poisonous herbs. 
Ins. decompound. Invol. and wnvolucels 3—5-leaved, the latter unilate- 
ral. Fls. white. 
C. macuLatum. Poison Hemlock. 
St. spotted ; lvs. tripinnate ; ///s. lanceolate, pinnatifid; fr. smooth—Grows 
in waste grounds, way-sides. A well known poisonous plant. Stem much 
branched, about 4f high, very smooth, round, hollow, with purplish spots. The 
lower leaves are very large, several times pinnate, bright green, on long, sheath- 
ing foot-stalks. Umbels terminal, the involucre of 6—8 lanceolate bracts, the 
involucels with the inner half wanting. Flowerssmall, white. Fruit with un- 
dulate or wrinkled ribs. The plant is a powerful narcotic, exhaling a disa- 
greeable odor when bruised. Used in medicine. Jl. Aug. § 
Suzorper 3—C@ LOSPERM &. 
Seeds incurved at base and apex. 
29. ERIGENTIA. Nutt. 
Gr. nptyeveta, daughter of the early spring; for its early flowering. 
Calyx limb obsolete ; petals flat, entire; fruit contracted at the 
commissure ; carpels 3-ribbed, ovate-reniform.— 2% Ré. tuberous. Radi- 
