(Enanthe. UMBELLIFER^E. 263 



I 



shorter than the sterile flowers: fruit 9 or 10 lines long, 1| lines broad. Proc. Am. 

 Acad. vii. 346 & viii. 386. 



Shady woods of Humboldt and Mendocino counties, Bolander, Kellogg. 



16. PODOSCIADIUM, Gray. 



Calyx-teeth small, scarious, subulate. Stylopodium short, conical. Fruit linear- 

 oblong, laterally compressed, with a rather broad commissure, somewhat contracted 

 at the apex ; ribs narrow and filiform ; oil-tubes 1 or 2 in the intervals, 4 on the 

 commissure. Seed reniform in section, slightly channelled on the back under the 

 oil-tubes, broadly furrowed on the face, with a central longitudinal ridge. Car- 

 pophore 2-parted. Smooth branching Californian perennials ; leaves pinnately or 

 somewhat ternately decompound, with linear leaflets ; umbels long-peduncled, with 

 involucres and involucels of several lanceolate acuminate subscarious bracts; flowers 

 white, polygamous. 



1. P. Calif ornicum, Gray. Stem 3 or 4 feet high : segments of the leaves 

 linear, entire or toothed, the terminal one elongated, an inch or two long ; upper- 

 most leaves simple : umbels 9 - 12-rayed, the primary umbel fertile, with rays two 

 inches long ; the others sterile, with rays an inch long and very slender pedicels 

 exceeding the bracts : petals shortly acuminate : fruit 4 lines long, shorter than the 

 pedicels, H lines broad, with obtuse ribs : oil-tubes and seeds as described in the 

 generic character. Proc. Am. Acad. vii. 346. Chcerophyllum (?) Californicum, 

 Torrey, Pacif. E. Rep. iv. 93. 



Collected only by Bigelow at Knight's Ferry ; May. 



2. P. Bolanderi, Gray. Two feet high : leaflets pinnate, the segments more 

 narrowly linear : umbels many-rayed ; rays 5 to 9 lines long ; the conspicuous 

 scarious involucels exceeding the pedicels : petals very long-acuminate, with the 

 mid vein strongly impressed : fruit 1| lines long, oblong, the narrow ribs becoming 

 elevated and undulate ; oil-tubes more numerous and obscure, 2 or 3 in the inter- 

 vals : seed more compressed dorsally, and broader in proportion, not grooved on the 

 back, the facial sulcus broad and shallow and but slightly raised in the centre. 

 Proc. Am. Acad. vii. 346. 



Mariposa Trail, among rocks, Bolander. 



A closely allied plant, but differing from any of the preceding genera, has been collected in 

 the Yosemite Valley by both Dr. Torrey and Dr. Gray, with the fruit however too immature for 

 its satisfactory determination. The fruit as found is narrowly oblong, 4 lines long, laterally com- 

 pressed with a rather wide commissure, slightly ribbed on the back ; disk evident, but stylopodium 

 depressed ; oil-tubes obscure, probably solitary in the intervals ; seed subterete, with a deep tri- 

 angular facial sulcus ; carpophore 2-parted. The plant is a foot high or less, glabrous, slender, 

 shortly caulescent ; leaves ternate or bipinnate, with linear acute segments, 1 to 3 lines long ; 

 umbels few-rayed, the rays very unequal, an inch long or less ; involucre none ; involucels of 1 

 or 2 small bractlets ; flowers yellow, the calyx-teeth obsolete. 



17. CENANTHE, Linn. 



Calyx-teeth rather prominent, acute. Stylopodium short-conical, the styles at 

 length elongated. Fruit oblong to globose, not compressed, with a broad commis- 

 sure, the ribs rounded and corky, with very narrow intervals ; oil-tubes solitary. 

 Seed somewhat compressed dorsally, flat on the face. Carpophore none. Gla- 

 brous herbs, mostly aquatic ; leaves pinnate or decompound ; umbels usually in- 

 volucrate ; flowers white. 



The following are our only representatives of this genus, of which there are 20 or more species 

 in the temperate regions of the Old World. 



