Pa 
PENTANDRIA. DIGYNIA. 
and unequal, 5 to 8 lines long. Umbellets crowded, 
lucell. 5-leaved, lanceolate-actminate, membranaceous}. . 
__ unilateral, a little shorter than the flowering nmbell. Ca-~ 
_ long-ovate, angularly striate; about the size of Caraway. 
seeds. Han, On the arid and denudated plains of the» 
issouri, commencing about 30 miles below the conflu- 
ence of White river. Flowering in May.—S. lucidum. 
= N. in Fraser’s Catalogue, 1813. It appears to be allied 
to Smyrnium, but of « very different habit, and the fruit 
accords with this genus. 
281. SMYRNIUM. 1. (Alexanders.) 
Fruit reundish and solid, somewhat lates 
rally compressed, angularly ribbed. Seed (black-- 
ish), gibbously convex yp Seaed “a 3 angular 
elevations. i 
in the centre of the umbell abortive. 
volucre 
Species. 1.8. integerrimum. Ons. Leaflets oval and 
entire, with a point. Radii of the umbell. divaricate, 
filiform. Involucell 3-leaved or 3-toothed, very ‘small. 
and often deciduous. Calix minutely 5-toothed; petals. 
oblong, acuminate, involfite. Styles divarieate, — 
than the germ, stigmas subcapitate. Fruit large, about 
the size of a lentil, suborbicular, laterally compressed, — 
blackish; seed gibbous, angular elevations pig eau 
Mountains; plentiful in the mountains of 
Flowering in May and June.~ 
2. S. trifoliatum Leaves crenate, radical 
S-leaved, unilateral. Calix 5-toothed. Petals oval, acu- 
inate, involute. Fruit small, blackish, somewhat late- 
rally compressed; seeds gibbous marked with 3 immar- 
ginate angular elevations, exclusive of the inner mar- 
« 
ee Linn. Cnidium trifoliatum, Cusson. Fag cher 
 Jeordatum, WatTer- All these synonymsas well as that — 
a Michaux, excepting Walter’s, as far as they regard the 
3 y apply  s some other apacien, probably to 
. aureum, if 
bee or less, 20-flowered, of which the half are abortive: 4 invo=, 
_ Han. Chiefly on the principal range of the ee eh 
tippermost 3-parted; flowers yellow. Oss. Involicell 
e 
: lix 5-toothed, acute, distinct. Petals oval acuminate,” 
involute, yellow. Styles filiform, divaricate. Fruit ob-’h 
aa roo wanting. Stem leaves sim- — 
is; intervals substriate, commissure flat—Thapsia tri- 
