UMBELLIFER^. 325 



New, and common in central and southern California, attaining the 

 height of 3—6 ft.; readily known by its dark green finely dissected foliage 

 and large umbels of greenish-yellow small flowers. May — Sept. 



17. LIGUSTICITM, Dioscorides. Stoutish and rather tall perennials, 

 with ternately decompound leaves, and white flowers in many-rayed 

 umbels. Calyx-teeth obsolete. Stylopodium mostly conical, the margin 

 at base undulate. Fruit ovate or oblong, somewhat compressed dorsally, 

 the commissure broad; ribs somewhat prominent or even wing-like, the 

 lateral ones usually broadest; oil-tubes 3—5 in the intervals, 6—10 on the 

 face. Seed with rounded or angular back, plane or concave on the face. 



1. L. apiifolium, Gray, Proc. Am. Acad. vii. 347 (1868): Nutt.; T. & G. 

 Fl. i. 641 (1840), under Ci/napiiiDi. Stems erect, 2-4 ft. high, the inflor- 

 escence puberulent: leaves mostly radical, ternate or biternate, then 

 once or twice pinnate, the ultimate segments 9i—m in- long, ovate, 

 laciniate-pinnatifid: umbel many-rayed; involucels of several narrowly 

 linear long bractlets: fr. oval, 1>2^2 lines long; stylopodiiim short- 

 conical; ribs narrow, acute; oil-tubes 3—5 in the intervals, 4 8 on the 

 face: seed with rounded back and concave face. — Neighborhood of 

 Yosemite, and thence far northward. 



2. L. (Jrayi, 0. & E. Eev. Umb. 88 (1888): L. apiifolium, var. minus, 

 Gray, Bot. Calif, i. 264 and ii. 451. Stem 1—2 ft. high, the inflorescence 

 glabrous: leaves ternate, then pinnate, the segments ovate, laciniate- 

 pinnatifid: fr. narrowly oblong, 2--2i£ lines long; ribs almost wing- like; 

 oil-tubes 3 — 5 in the intervals, 8 on the face: seed with angled back and 

 slightly concave face.— Habitat of the preceding. 



18. SELINUM, Theophrastus. A genus of precarious status, the 

 species easily referable either to the preceding or to the next, at agree- 

 ment with both, as they with each other, in habit; differing from Ligusti- 

 cum in having the carpel more decidedly winged, and the oil-tubes 

 usually only one in each interval. 



* Involucels conspicuous; pedicels glabrous; wings of carpel thin. 



1. S. Paciflcum, Wats. Proc. Am. Acad. xi. 140 (1876). Leaves ter- 

 nately bipinnate; segments ovate, acutish, 1 in. long, laciniately toothed 

 and lobed; peduncles stout, the umbel about 15-rayed; bracts of invo- 

 lucre 1 in. long, equalling the rays, lobed and toothed; involucels of 

 several linear entire or 3-toothed bractlets: fr. oblong, 3 — 4 lines long; 

 wings rather narrow; oil-tubes conspicuous, rarely 2 in the intervals: 

 seed channelled under the dorsal oil-tubes. — Near Sausalito, and in the 

 Mission Hills. 



* * Umbels naked; rays and pedicels hoary-pubescent; wings of carpel corky. 



2. S. capitellatum, Wats. Bot. King Exp. 126 (1871); Gray, Proc. 



