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12. Cicuta L. Water-HEMLOCK. 
Umbels regularly compound. COremocarp 
laterally contracted. Ribs flattened, intervals 
l-vittate. Mericarp terete. Aquatic. Flowers 
white.—2¢. 
1. C. Cauirornica Gray. Leaves pinnate, 
the lower sometimes 2-pinnate at base; leaflets 
serrate, the veinlets running into the teeth. 
Presidio. Summer. 
2. C. BotanpeRt Watson. All leaves 2-pin- 
nate; leaflets serrate, the veinlets running into 
the sinuses; involucral bracts linear.—Suisun. 
Alvarado marshes. Summer. 
3. ©. macutaTa L. Lower leaves 2-pinnate; 
leaflets serrate, the veinlets running into the 
sinuses; involucre obsolete.—Tamalpais. Sum- 
mer. Poisonous aquatics. 
13, Berula Koch. 
Umbels regularly compound. Cremocarp 
laterally contracted, ovate. Mericarp terete, 
5-ribbed, lateral ribs not contiguous. Epi- 
carp thick, corky. Ribs filiform. Intervals 
o-vittate. 
1. B. aneaustirotia Koch.—27f. Flowers 
white. Baden Station. Summer. 
14, Pimpinella L. 
Umbels regularly compound. Cremocarp 
laterally contracted, ovate. Mericarp convex, 
