PENTANDRIA, DIGYNIA. if ir 
~ Leaves ternate; (involucellum. in JZ. ostruthium 1 or 2- 
leaved, minute.) : 
Species. 1. 2. lucida. Sp. Angelica (weida. L. Selinum 
canadense? Mich. 
The plant quite smooth, and scarcely inferior in size 
to Heracleum Sphondylium. Leaves primarily 3-parted, — 
_ and decompound, the segments confluent in 5’s, of which 
the more complete are oblong-ovate, acute, mucronately | 
1 and deeply serrate; sheaths remarkably large and ventri= 
cose, towards the summit of the stem nothing is produced | 
but these large and membranaceous sheaths, and no — 
other kind of involucram; the flowering umbell consist~ 
d ing of many rays is so dense as to appear nearly he- 
mispherical; partial involucrum minute and setaceous: 
flowers white and regular; with the seed I am unac- 
} quainted; advanced germ truncated, roundish, somewhat 
gibbous and compressed, slightly striated. Whether,this 
he Sprengel’s plant or not, I have not the means of | 
ascertaining, being unacquainted with the mature fruit, 
in the absence of  ehicls the definition becomes an insol- ! 
vable riddle. \ 
_- A-genus now, according to Sprengel, including 6 spe- | 
cies, chiefly separated from Angelica and Selinum. — 
264. HERACLEUM. L. (Cow-Parsnip.) = 
Calix nearly entire. Petals emarginately in- 
flected, often of 2 forms. Fruit elliptic, dorsally 
compressed, flat, apex emarginate, margin mem- 
branaceous, Seed with S striae, * intervals ma- 
culate half way down,—commissure flat, pi 
culate’ Sprencet.—Involucrum none. 
. Umbell and umbellet many-rayed; involucel! s to Z- 
leaved, outer leaves longer; central 
_ abortive, radial ones in 4. usti x 
. heres. ’* H lanatum. a, penile: species, 
‘eateets distinct from H. Sphondylium. 2..* im 
On the banks of the river Missouri. Inner 
ee stems eaten by the savages of Columbia “ine 
ly an European genus, of about 16 species. 
265. PEUCEDANUM. 1. (Sulphur-wort) 
 Calixe minute, 5-toothed. Petals 0 
irved, equal. Hystt oval a 
ve 
