PHELLOPTERUS. UMBELLlFERjE. 259 



LIGUSTICUM. 



carpel-wings rather narrow : oil-tubes 3-5 in the broad intervals 6-8 on 

 the commissure : seed-face deeply sulcate or involute. Nevada to Idaho 

 and Montana. 



13 PHELLOPTERUS Benth. B. & H. Gen. Plant, i, 905. 



A low tomentose seashore herb with once or twice ternate or 

 ternate-pinnate thick leaves ovate to roundish more or less con- 

 fluent leaflets that are densely white-tomentose beneath, involu- 

 cre and involucels of subulate bracts and glomerate white flowers. 

 Calyx-lobes small. Fruit globose, glabrous. Carpel somewhat 

 flattened dorsally, with 5 equal broad and corky-thickened wings ; 

 lateral wings distinct from those of the other carpel. Stylopodi- 

 um depressed. Oil-tubes 2-3 in the intervals, 4-6 on the com- 

 missure. Seed-face slightly concave. 



P. littoralis Schmidt. Fl. Sachel. in Mem. Acad Petrop. 7, xii, 138. 

 Subacaulescent : petioles elongated ; leaflets callous-serrate to dentate, with 

 impressed veinlets above, 1-2 inches long: umbel shorter than the leaves, 

 10-12- rayed; rays 6-12 lines long; umbellets capitate : fruit 4-5 lines in 

 diameter the wings \% lines broad. On shifting sands of the seashore, 

 Vancouver Island to Southern Oregon. 



14 THASPIUM Nutt. Gen. i, 196. 



Perennial herbs with ternately divided leaves with broad ser- 

 rate or toothed leaflets, mostly no involucre, involucels of small 

 bractlets mostly yellow flowers and all the fruits pedicelled. 

 Calyx-lobes conspicuous. Fruit ovoid to oblong, slightly flat- 

 tened dorsally if at all, mostly glabrous. Carpel with 3 or 4 or 

 all the ribs strongly winged. Stylopodium wanting; styles 

 long. Oil-tubes solitary in the intervals, 2 on the commissure : 

 Seed sulcate beneath the oil-tubes, almost terete or somewhat 

 dorsally flattened with plane face. 



T. aiirenm Nutt. 1. c. Glabrous : radical leaves mostly cordate, ser- 

 rate : stem leaves simply ternate : leaflets ovate to lanceolate, rounded or 

 tapering at base, serrate : umbel 8-12-rayed; rays 6-12 lines long; pedicels 

 about a line long, flowers deep yellow: fruit globose-ovoid, about 2 lines 

 long, all the ribs equally winged. Thickets and woodlands through the 

 Eastern States. 



Var. trifoliatum C. & R. Bot. Gaz. xii, 136. Leaves or leaflets cre- 

 nately-toothed. Ohio and Illinois to Oregon and Brit. Columbia. 



Var. iiiYolncratnm C. <& R. 1. c. Radical leaves twice or thrice ter- 

 nate; leaflets as in the species: umbel with conspicuous involucre of ser- 

 rate bracts and involucels of numerous toothed bractlets often as long as 

 the pedicels which are 2-3 lines long. Kootenai county, Idaho (Leiberg.) 



* * Fruit with all the ribs prominent and equal ; stylopodium con- 

 ical : oil-tubes numerous. 



15 LIGUSTICUM Linn. Gen. n. 346. 



Smooth perennials from large aromatic roots ; with large ter- 

 nate-pinnately compound leaves, mostly no involucre, involucels 

 of narrow bractlets and white flowers in large man5 r -rayed um- 



