322 UMBELLIFER^. 



long: fr. f-^ line long. — Very common in marshy grounds throngliout the 

 Bay region, where its habits are quite those of an indigenous plant, but 

 it is assumed to have established itself in the first place as an escape 

 from the gardens. 



11. APIASTRUM, NuUall. A small and rather delicate branching 

 annual, with leaves dissected into linear segments. Umbels sessile in 

 the forks, or opposite the leaves, naked, few-rayed. Calyx-teeth obsolete. 

 Petals ovate, concave, obtuse. Stylopodium depressed; styles short. 

 Fruit cordate, laterally compressed, the commissure narrow; ripe carpels 

 incurved, with 5 often obscure rugulose ribs ; oil-tubes broad and solitary 

 in the intervals, with a narrow one under each rib. 



1. A. angustifolium, Nutt.; T. & G. Fl. i. 644 (1840); Torr. Bot. Mex. 

 Bound, t. 28. A few inches to nearly a foot high; branches more or less 

 dichotomous: leaves 1 — 2 in. long, biternately or triternately dissected 

 into narrowly linear or almost filiform segments: rays of umbel very 

 unecpial: fr. ^^ line long, somewhat broader, the 5 primary ribs occasion- 

 ally supplemented by 4 less prominent intervening ones. — Common in 

 early spring, from Mendocino Co. southward. 



12. CARUM, Turner (Bioscoridesf). Glabrous erect rather slender 

 herbs, our species perennial, with tuberous or fusiform or coarse-fibrous 

 usually fascicled roots, pinnately ternate leaves with few linear leaflets, 

 and involucrate umbels of white flowers. Calyx-teeth small. Fruit 

 ovate to linear-oblong; pericarp thin, with obtuse often filiform ribs; 

 oil-tubes solitary in the intervals. 



1. C. Kellog-g-ii, Gray, Proc. Am. Acad. vii. 344 (1868); Greene, Pitt. i. 

 273 (1889), under Alxnia. Stems several, 3—6 ft. high, from a strong 

 ttift of coarse hard fibrous roots: lower leaves ternate, the pinnate 

 divisions with linear segments 1 — 3 in. long or more: involucre and 

 involucels prominent, somewhat scarious: calyx-teeth subulate, conspic- 

 uous: fr. oblong, 1^4 — 2^2 Hues long; stylopodium prominent, styles as 

 long: seed sulcate beneath the large oil-tubes. — Very common on open 

 plains and hillsides about San Francisco Bay. July — Oct. 



2. C. Gairdneri, Gray, Proc. Am. Acad. vii. 344 (1868); H. & A. Bot. 

 Beech. 349 (1840), under Atienia; T. & G. Fl. i. 612, under Edosmia. 

 Stem solitary, 1 — 4 ft. high, from a fascicle of fusiform tuberous roots: 

 leaves mostly simply pinnate, with 3 7 linear or almost filiform leaflets 

 2 — 6 in. long, the lowest rarely themselves pinnately divided, the upper- 

 most cauline usually simple: involucre of few bracts or 0: involucels of 

 linear-acuminate bractlets : f r. ovate, % — 1 line long, with long styles : 

 seed terete. Var. latifoliuiii, Gray, 1. c. Smaller and very slender; leaf- 

 lets broader, linear-lanceolate, J^ in. wide. — Throughout the State; the 

 variety in the mountains northward and eastward. July — Oct. 



