lie Sium L. Water Parsnip. 
Perennial herbs with stout stems and pinnate leaves and sharply 
toothed leaflets. Flowers white, @immuguegumk in compound umbels, subtended by 
both bracts and bractlets. Calyx teeth minute. Stylopodia flatfened, with 
very short styles. Fruit flattened contrary to the commissure hus seenys 
oval in outline, the carpels each provided with 5 corky equal ribs, blunt on 
the back, oi] tubes 1-3 in the intervals, but never solitary in all the 
intervals, several on the commissural face. 
le Se cicutaefolium Gmelin. —> rect glabrous herbs 60-100 cm. 
tall, the internodes mostly 15-30 cm. long, clasping the stem, the blades ovate 
in outline, 15-25 cm. long, omubulfikemewe with commonly 9-13 linear-oblong segments 
4-8 cme long, 6-12 mm. wide, acute at both ends, sharply serrate, une teeth 
1-2 mm. tall, spreading; stem leaves 
some leaflets frequently parted nearly to the base, appearing as two; 
unbels (f_—memmb, usually 2 or more, subtended by green bracts commonly lanceolate, 
5-12 mm. long, the pedicels subtended by similar smaller bractlets, the primary 
rays of the umbel 15-50, 5-4 cm. long, the pedic 2-6 mme long at maturity; 
Pomwanimag, 2ruits 5mm. long, oval in outline,viewed cotrary to the 
commissure, each carpel bearing 5 equal corky white ribs, the intervals brown, the 
commissural face flat, becoming convave when dry. 
Frequent in lake lagoons or in muddy meadows at low elevations. 
a a ee 
