256 
UMBELLIFERiS. 
in irregularly compound few-rayed umbels, involucrate with sessile leafy usually g g 
toothed bracts, the bracts of the involucels small and entire. m § 
A genus of a few scattered species, more than half of them native of North America, and of ^ 
these only two are confined to the region east of the Rocky Mountains. The Californian species g q 
are chiefly limited to the Coast Ranges and are peculiar in their habit, small fruit, &c. p > 
% Leaves palmately divided, the lobes toothed, or lacerate, or pinnatijid with decur- ' - ■ 
rent segments : rootstocks thickened. ■ 
4- Mature fruit shortly pedicellate : flowers yellow. ^ > 
1. S. arctopoides, Hook. & Am. Stems very short, with several divergent 
scape-like branches, often much exceeding the leaves (3 to 6 inches long), each bear- ' ^ 
ing an umbel of 1 to 3 elongated rays : leaves deeply 3-lobed, the cuneate divisions 
once or twice laciniately cleft, with lanceolate acute spreading segments : involucre 
of 1 or 2 similar leaflets : heads large, 3 to 6 lines in diameter, with conspicuous 
involucels of 8 to 10 narrowly oblanceolate mostly entire bracts : fruit shortly 
pedicellate, Ih lines long, naked at base, strongly armed above. — Bot. Beechey, 
141 ; Hook. El. i. 258, t. 91. 
About San Francisco and eastward in the Sacramento Yalley, in the plains and on dry hillsides. 
Strongly marked by its low scape-like branches, large involucels, and laciniately lobed leaves; 
plant yellowish green. The figure in Hook. FL represents the species poorly, and but for the 
large solitary head might be supposed t ’ " 
) be from a low form of S. laciniata. 
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Botanical 
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