“CAUCALIS: UMBELLIFER. 247 
CORIANDRUM. 
2 CAUCALIS L. Gen. n. 331. 
Mostly hispid annual herbs with pinnately dissected leaves 
and white flowers. Calyx-lobes prominent Fruit ovate or ob- 
long flattened laterally. Carpel with 5 filiform bristly primary 
ribs, and 4 prominent winged secondary ones with barbed or 
hooked prickles.. Stylopodium thick-conical. Oil-tubes solitary 
in the intervals (that is under the secondary ribs), 2 on the com- 
missure. Seed face deeply sulcate. 
_ C. microcarpa Hook. & Arn. Bot. Beechey 348. Stem _ slender, erect, 
3-15 inches high, nearly glabrous: leaves much dissected; slightly hispid: 
umbels at the ends of the stems and branches, very unequally 3-6 rayed 
involucre foliaceous the bracts divided: involucels of entire or somewhat 
divided bractlets : rays slender, 3 inches long or less, pedicels very unequal : 
fruit oblong, 2-3 lines long armed with rows of hooked prickles, the pri- 
mary lateral ribs near and pushed around upon the commissural face 
while the adjoining secondary ones become marginal. Eastern Washing- 
ton and Oregon to California and Arizona. 
3 CORIANDRUM L. Gen. n. 356. 
Slender branching glabrous annuals with pinnately compound 
leaves, no involucre, involucels of several small narrow bractlets, 
and white flowers. Calyx-teeth prominent. Fruit globose, with 
broad commissure carpels with inconspicuous secondary ribs 
Stylopodium conical. Oil-tubes beneath the secondary ribs. 
and obscure, the commissural pair larger. Seeds dorsally flat- — 
tened with somewhat concave face. 
C. sativum L the common coriander has escaped from gardens and is 
seen along roadsides in places. , 
IT. Fruit with primary ribs only. 
4 ANGELICA L. Gen. n. 347. 
Stout perennial branching herbs with ternately or pinnately 
compound leaves, scanty involucre or none, involucels of small 
-bractlets or none and large terminal umbels of usually white 
flowers. Calyx-teeth mostly obsolete. Fruit ovate or oblong, 
with prominent crenulate disk. Carpels with strong ribs, the 
lateral ones broadly winged, the wings distinct from those of the 
opposite carpel, thus forming a double-winged margin to the 
fruit. Stylopodium depressed or sometimes slightly conical. 
Oil-tubes 1—several in the intervals, 2-10 on the commissure. 
* Qil-tubes solitary in all the intervals. 
A. genuflexa Nutt. T. & G. Fl. i, 620. Stems stout 2-6 feet high, 
glabrous except the rough-pubescent inflorescence; leaves once or twice 
ternate, the divisions often deflexed; leaflets ovate to lanceolate, more or 
less acuminate, irregularly and sharply serrate: umbel equally many- 
rayed, with no involucre, and inyolucels of numerous linear bractlets, 
rays an inch or more long; fruiting pedicels 4-t lines long; fruit nearly 
round, emarginate at base and apex, glabrous; lateral wings broader than 
the body: oil-tubes 2 on the commissure: seed-face plane. In wet places; 
Oregon to Alaska, west of the Cascades. 
