260 UMBELLIFER^E. -. Pimpinella. 



A large genus in the Old "World of 60 to 70 species, the following almost its only representa- 

 tive in America. 



1. P. apiodora, Gray. Smooth, erect, 2 or 3 feet high, rather stout : leaves 

 mostly radical, '2 - 3-ternate, the cuneate-ovate leaflets laciniately pinnatifid and 

 toothed, an inch long: umbels long-peduncled ; rays 6 to 15, hispidly puberulent, 

 an inch or two long ; involucre and involucels of 1 or 2 bracts, or wanting : flowers 

 white or pinkish : fruit broadly ovate, 1| lines long, the carpels 5-angled with 

 slightly prominent ribs : oil-tubes numerous (4 to 5 in the dorsal intervals, 6 in the 

 lateral, and 8 or more in the commissure) : styles sh3rt : carpophore 2-parted. 

 Proc. Am. Acad. vii. 345, & viii. 385; Watson, Bot. King Exp. 121. 



San Francisco and northward ; Mendocino County (Bolander) ; Oregon (Hall) Eastern Ne- 

 vada, Watson. Perfectly mature fruit has not yet been collected. The plant has a strong 

 pleasant odor, like that of Celery. 



11. BEBULA, Koch. 



Calyx-teeth minute. Stylopodium conical and styles short. Fruit nearly globose, 

 with a broad commissure, emarginate at base, the ribs nerve-like, not raised above 

 the thick epicarp ; oil-tubes numerous and contiguous, surrounding the terete seed. 

 Carpophore 2-parted, very slender. A smooth perennial aquatic : leaves pinnate 

 and serrate ; involucres and involucels of several leaflets ; flowers white. 



A single species (often referred to the genus Si-urn) common in Europe, and widely though 

 sparingly distributed through the United States and Mexico. 



1. B. angustifolia, Koch. Erect but usually low, ^ to 3 feet high, the stem 

 stout and angled : leaflets about 6 pairs, ovate-oblong to linear, to 2 inches long, 

 often laciniately lobed at base, and the upper ones especially more or less deeply 

 cut-toothed : peduncles 1 or 2 inches long: rays an inch long or less; involucre and 

 involucels of 6 to 8 entire linear-lanceolate leaflets : fruit two thirds of a line long. 

 Sium angustifolium, Linn. 



Collected at Fort Tejon (Xantus, Rothrock) though without fruit, and reported from San Fran- 

 cisco ; Sierra Co., Lemmon. The Helosciadium (?) Californicum of Hook. & Arn. Bot. Beechey, 

 142, has been doubtfully referred to this species, but is described as procumbent, the lower leaflets 

 pinnatifid or pinnate, and the styles long. Benth. & Hook. (Gen. PI. i. 893) speak of the fruit 

 of the specimen in herb. Kew as having the epicarp thin over the intervals as in species of Sium. 

 The reference is therefore probably incorrect and the species remains uncertain. 



12. CICUTA, Linn. WATER HEMLOCK. 



Calyx-teeth small, acute. Stylopodium depressed. Fruit broadly ovate or sub- 

 orbicular, slightly compressed laterally but the commissure narrow ; ribs broad and 

 obtuse, corky ; the oil-tubes solitary in the intervals. Seed subterete, flat or 

 rounded on the face. Carpophore 2-parted. Smooth tall branching marsh peren- 

 nials, with stout hollow stems ; leaves pinnate or pinnately decompound ; umbels 

 of white flowers many-rayed, the involucre small or none, and involucels of several 

 small bracts : roots thick and fascicled, very poisonous : flowering in summer. 



A small genus of about half a dozen species, growing in damp or wet places, two of them very 

 widely distributed round the world in the northern hemisphere. The aromatic roots of the first 

 species have often proved fatal to those eating them, and the others are probably as dangerous. 



1. C. maculata, Linn. Stout, 3 to 6 feet high : lower leaves on petioles 1 or 

 2 feet long, bipinnate ; the leaflets (1 or 2 inches, sometimes 4 inches, long) oblong- 

 lanceolate, acuminate, coarsely serrate with the veinlets running to the sinuses, 

 occasionally lobed, the lower petiolulate : rays an inch or two long, rather slender ; 

 involucre usually wanting ; involucels of 6 to 8 narrow lanceolate leaflets : fruit 



