154 UMBELLIFERjE. 



parts both of the Old World and the New, and common in central and 

 southern California, attaining the height of 36 ft.; readily known by 

 its dark green finely dissected foliage and large umbels of greenish- 

 yellow small flowers. May Sept. 



15. SELINUM, Theoplir. Caulescent, branching perennials. Calyx- 

 teeth obsolete. Fruit with prominent crenulate disk. Carpel decidedly 

 winged; oil-tubes usually only one in each interval, 24 on the face. 



1. S. Paciflcum, Wats. Leaves ternate-bipinnate; segments ovate, 

 acutish, 1 in. long, laciniately toothed and lobed; peduncles stout, the 

 umbel about 15-rayed; bracts of involucre 1 in. long, equalling the rays, 

 lobed and toothed; involucels of several linear entire or 3- toothed bract- 

 lets: fr. oblong, 3 4 lines long; wings narrow; oil-tubes conspicuous, 

 rarely 2 in the intervals: seed channelled under the dorsal oil-tubes. 

 Near Sausalito, and in the Mission Hills. 



16. ANGELICA, Braunschweig. Perennials, stout and tall. Seg- 

 ments of the large pinnately or ternately compound leaves broad, 

 toothed; petioles dilated. Umbels many-rayed, nearly or quite naked. 

 Flowers white or purple. Calyx-teeth minute or oboslete. Fruit ovate 

 or oblong, strongly flattened dorsally, with a very broad commissure, 

 margined by a broad somewhat scarious wing; dorsal ribs prominent, 

 more narrowly winged; oil-tubes 13 in the intervals. 



1. A. tomentosa, Wats. Hoary-tomentose, or the stem in age glabrate: 

 leaves quinately bipinnate; leaflets firm, ovate, acute, very oblique at 

 base, 24 in. long, the lower sometimes lobed, serrate with unequal 

 acute teeth: umbels naked, often dense: rays 1 3 in. long: fr. 3 lines 

 long, broadly elliptical, the lateral wings thin, the dorsal acutish : seed 

 thin, plane on the face, channeled on the back by the impressed dorsal 

 oil-tubes. Banks of streamlets among the hills. 



2. A. Calif or nica, Jepson. Stem 4 ft. high, glabrous, only the leaves 

 and ends of the rays puberulenl: leaflets broadly ovate, 2 in. long, thinnish, 

 the lower often lobed or divided at base, all irregularly serrate and the 

 serratures mucronate: peduncles with broadly dilated bracts about in 

 the middle: rays 4050, unequal, 16 in. long: fr. oblong, about 4J 

 lines long, the dorsal and intermediate ribs winged: oil-tubes 3 in the 

 intervals, 2 on the face. Vaca Mountains. 



17. LEPTOTJSNIA, Null. Glabrous subacaulescent perennials, with 

 thick often very large fusiform roots, pinnately decompound leaves. 

 Fruit strongly compressed dorsally, oblong or elliptical, with thick corky 

 lateral wings, the dorsal and intermediate ribs filiform or obscure; oil- 

 tubes 36 in the intervals, 46 on the face, mostly small, sometimes 

 obsolete. 



