coslopleubum. UMBELLIFER^E. 261 



OBOGENIA. 



Common from Washington to California. 



L. verticillatum C. & R. Cont. Nat. Herb, iii, 320, t. 12. Angelica 

 verticillata Hook. I have neither specimens nor description of this spe- 

 cies, and the plate cited is not sufficient to draw one from : it is found on 

 "shady grassy borders of pine woods of the high plains of the Nez 

 Perces," Idaho. 



16 CCELOPLEURUM Ledeb. Fl. Ross, ii, 361. 



Stout glabrous sea-coast perennials with 2-3-ternate leaves on 

 very large inflated petioles, few-leaved involucre, involucel of 

 numerous small bractlets and greenish-white flowers in many- 

 rayed umbels. Calyx-lobes obsolete. Fruit globose to oblong, 

 slightly flattened laterally if at all, glabrous. Carpel with very 

 thick and prominent corky ribs. Oil-tubes small, one in 

 the interval and 1 or 2 under each rib, 2-4 on the commissure, 

 all adhering to the seed which is loose in the pericarp. 



C. Gmelini Ledeb. I.e. Stems stout, 1-3 feet high: leaflets ovate, 

 acute irregularly cut-serrate 2-3 inches long, 1-1 X inches broad : rays 1-1)£ 

 inches long : pedicels 3-4 lines long : fruit globose to oblong 2-3}^ lines 

 long, with ribs all nearly equal and seed-face plane. Alaska to the coast 

 of Washington, also on the Northern Atlantic coast. 



C. inaritimum C. & R. Bot. Gaz. xiii, 145. Stems 2-3 feet high : leaf- 

 lets broad, often round, usually with cordate base, very obtuse, dentate or 

 crenate-denate, 2)^-3 inches long, 2}4 inches broad: rays 2-3 inches long; 

 pedicels 6-7 lines long : fruit oblong 3-3)^ lines long]! with lateral ribs 

 broader than the others, and seed-face plane. Wet ocean bluffs near the 

 mouth of the Columbia and southward. 



)7 OROGENIA Watson Bot. King. 120, t. 15. 



Dwarf glabrous nearly acaulescent plants from tuberous or 

 fusiform roots with ternate leaves and linear segments, no in- 

 volucre, involucels of few linear bractlets, and white flowers in 

 subcompound umbels with very unequal rays. Calyx-lobes 

 minute. Fruit oblong, very slightly flattened laterally, glabrous. 

 Carpel much flattened dorsally with filiform dorsal and interme- 

 diate ribs : laterals excessively corky-thickened, involute (that is, 

 extended towards the other carpel leaving between the com- 

 missural faces a cavity which is divided longitudinally by a 

 thick cork}- projection from the middle of each face). Oil-tubes 

 very small, 3 in the intervals, 2-4 on the commissure. 



0. linearifolia Watson 1. c. Stems slender, 1-2 inches high, from a 

 deep-seated tuber : leaves 2 or 3, once or twice ternate, upon slender peti- 

 oles ; leaflets entire 1-2 inches long, 1-3 lines wide, obtuse: umbels l-4- 

 rayed, with nearly sessile flowers: fruit 1*^-2 lines long; lateral ribs and 

 commissural projection strongly developed. Oregon and Washington to 

 Utah. 



0. fnsiformis Watson Proc. Am. Acad, xxii, 474. Rather stout 3-6 

 inches high, from a long fusiform root: leaves 2-3-ternate, with terminal 

 leaflets often 3-parted; leaflets an inch or less long: umbels 6-10 rayed: 

 fruit about 3 lines long, \% lines broad, lateral ribs and commissural pro- 



