298 tmbelliferai:. 



or Laciniate, or pinnate like the cauline, 3% ft. long or less; leaflets 5 to 13, 

 broadly lanceolate, serrate, 3 to 4 in. long; bracts lanceolate, over ' L > in. long, 

 scarious-margined below; braetlets ovate-lanceolate, 1% lines long; fruit ovoid. 

 2 lines long, with acute ribs; oil-tubes 2 on the face, 2 or 3 in the intervals 

 or occasionally 1. 



Salt-marshes: Suisun Marshes; Stockton. 



19. LILAEOPSIS Greene. 



Small glabrous perennials. Steins fistulous, creeping and rooting in the mud, 

 only the leaves and short peduncles erect. Leaves reduced to hollow cylindrical 

 petioles jointed by transverse partitions. Flowers dull white or slightly tinged 

 with pinkish brown, in a few-flowered umbel. Bracts of the involucre minute. 

 Fruit subglobose. Dorsal ribs filiform, the lateral corky and thickened next 

 to the commissure. Oil-tubes solitary in the intervals, 2 on the face. (Named 

 for its resemblance to Lilaea.) 



1. L. lineata (Michx.) Greene. Leaves 1 to 8 in. long, 1 to 2 lines wide; 

 peduncles 1 in. long or less; fruiting pedicels l 1 /^ to 3 lines long; petals plane; 

 fruit 1 line long. — (Crantzia lineata Nutt.) 



Salt marshes or brackish mud flats: Bodega Head; Pt. Eeyes; Port Costa 

 to Antioch; Eoberts Island. 



20. OENANTHE L. 



Aquatic glabrous herbs with succulent stems from thick rootstocks. Leaves 

 pinnately compound. Flowers white in compound umbels, terminating the 

 branches. Involucre present or none. Involucels present. Calyx-teeth rather 

 prominent. Styles slender, at length elongated. Fruit globose-ovate, cylindrie 

 or slightly flattened laterally. Ribs broad, obtuse, corky; commissural face also 

 eorky. Oil-tubes solitary in the intervals, 2 on the face, the seed furrowed 

 beneath them. (Ancient Greek name of some thorny plant.) 



1. O. sarmentosa Presl. Stems succulent, 2 to 4 ft. high; leaves ter- 

 oate and bipinnate; leaflets 5 to 13, 6 in. long or less, ovate-lanceolate, the 

 lower obliquely lobed on the lower side or with an almost distinct supplementary 

 leaflet; rays % to 2 in. long; bracts few or none; braetlets lanceolate, acumin- 

 ate; fruit 1 to 2 lines long, the ribs very corky and somewhat turgid. 



Mendocino Co. and Sierra Nevada north to British Columbia. Var. Califor- 

 nia ('. & R. Erect, 2 to 4 ft. high; leaves bipinnate; leaflets elliptic-ovate 

 in outline, 3-cleft or -parted and also coarsely toothed or incised, those of the 

 upper leaves crowded on the rachis and sometimes tending to be conduplicate ; 

 fruit cylindrie. - lines long, crowded. — Slow streams or shallow ponds, often 

 filling them with dense masses; San Francisco Bay region to Southern Califor- 

 nia. In autumn the stems may give rise to slender runner-like branches 3 to 

 5 ft. long which produce at intervals bulblets % in. in diameter or less. (O. 

 californica Wats.) 



21. BERULA Hoffm. 



Glabrous marsh perennial with pinnate leaves and serrate leaflets. Flowers 

 white, in terminal compound umbels. Bracts narrow. Braetlets unequal, 1 

 or - surpassing the flowers. Fruit subglobose, glabrous, surrounded by a 

 continuous corky covering of eonfluenl ril>^. Oil-tubes numerous and con- 

 tiguous, in the mature fruit more or le8S confluent, eloselv surrounding the 

 seed cavity. (Latin name of the Water-crest 



1. B. erecta (Ihuls.) Coville. Erect, rather stout, eorymbosely branch- 

 ing above, o" in. to '■'> ft. high; leaves Bimply pinnate; leaflets 9 to 19, 1 or 



