srr inum. UMBELLIFRA, 249) 
HERACLEUM, 
few deciduous bractlets: rays 1-2 inches long: fruit sessile and dilated; re- 
ceptacle, hirsute, cuneate-obovate, 3 lines long: lateral wings broader than 
the dorsal and intermediate ones. Along stream banks eastern Oregon. to: 
Nevada and California. 
S. Kingii Watson, Bot. King, 126. Smooth, 1-2 feet high: lower leaves: 
bipinnate the upper nearly simply pinnate with dilated petioles; leaflets 
ovate or linear lanceolate, 1-3 inches long, coarsely and unequally serrate; 
umbel 5-10 rayed, with no involucels; pedicels 2-3 lines long, fruit broadly 
ovate, hispid, 2-3 lines long; lateral wings broader than the narrow dorsal 
and intermediate ones. Aquatic in mountain swamps Eastern Washington 
to Nevada and California. 
S. Dawsoni C. & R. Bot. Gaz., xiii, 144. A foot or so high glabrous: 
leaves ternate then pinnate, the small ovate acute segments laciniately 
toothed to entire: umbel with involucels of linear-oblong scarious bractlets 
longer than the pedicels and abruptly ending in a longer attenuation: ped- 
icels 1-2 lines long, fruit oblong, smooth about 2 lines long, with promi- 
nent wings, the lateral ones but little broader. At Pelly Banks Yukon 
river, lat 61 deg., perhaps Northern Washington. 
S. Benthami Watson. Bibl. Ind. 432. Glabrous throughout: leaves 
ternate then pinnate the oblong to linear-oblong acute segments 6-9 lines 
long, laciniately toothed or lobed to entire; umbels on stout peduncles, 
10-15 rayed, with an involucre of a few linear setaceous bracts, and 
involucels: of several. elongated linear entire bractlets equalling 
the flowers or longer; rays about an inch long; pedicels 2-3 lines 
long: fruit ovate, 2 lines long, often with a _ single prominent 
calyx-tooth. Arctic shores and mountains to Queen Charlotte Islands, 
perhaps Northern Washington. 
S$. Hookeri Watson C. & R. Rev. Umb. 45. Conioselinum. Fisheri of 
Anthers in part. Stout, 2-3 feet high, gla’ rous except the somewhat pu- 
berulent inflorescence: leaves large with much dilated petioles bipinaatifid,. 
the narrowly ovate to linear-oblong acute segments an inch or less long, 
laciniately toothed or lobed to entire: umbel 10-25 rayed, with involucre of 
few deciduous linear-setaceous bracts, and involucels of narrowly linear 
more or less elongated bractlets; rays about an inch long; pedicels 2-3 
lines long: fruit oblong, glabrous, 2-3 lines long, with prominent but 
scarcely winged dorsal and intermediate ribs and rather broadly winged. 
thickish lateral ribs. Ocean bluff mouth of the Columbia to Alaska. 
6 HERACLEUM L. Gen. n. 345. 
Tall stout perennial herbs with large ternately compound 
leaves, deciduous involucres, involucels of numerous bractlets 
. and large many-rayed umbeis of white flowers with obcordate 
petals. Calyx-lobes small or obsolete. Fruit broadly ovate, 
very much flattene.l, somewhat pubesceni. Carpel with dorsal 
and intermediate ribs filiform; the broad lateral wings con- 
tiguous to those of the other carpel, strongly nerved towards the 
outer margin. Stylopodium thick conical. Oil-tubes about 
half as long as the carpel 2-4 on the commissure. Seed very 
much flattened dorsally. 
H. lanatum Michx Fl. i, 166. Very stout, 4-8 feet high, pubescent 
or woolly above: petioles much dilated; leaflets petiolulate round-cordate 
4-10 inches broad irregularly cut-toothed: rays 2-6 inches long: fruit 4-6 
lines long, somewhat pubescent.. Wet grounds, Alaska:to California and 
across the continent. 
