CAUCALIS. UMBELLIFER^. 247 



CORIANDKUH. 



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. & Am. 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 line's 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. 



//. 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, 210 on the commissure. 

 * Oil-tubas solitary iu 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 involucels of numerous linear bractlets, 

 rays an inch or more long; fruiting pedicels 4-0 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. 



