14 £ PENTANDRIA, DIGYNIA. 
139. (ENANTHE. Gen. pi. 484. {Umbelliferce.) 
Fruit ovate-oblong;, corticate^ solicit apex 
denticulate^ crowned with the persistent 
style^ ridges (or striae) (on each seed) 3 or 
5 obtuse. Universal involucrum scarcely 
any. — SprengeL 
dgidius. 1. (E. leaves all pseudo-pinnate ; leaflets sessile, 
oblong-lanceolate, entire or incisely toothed; 
involucrum none ; styles peltately dilated at 
the base, extremely short; fruit subelliptic. 
Obs. Stem erect, rigid, terete, even, striate, 
and fistulous. Leaflets 4 or 5 pair, all sessile, 
circumscribed by a whitish and somewhat sca- 
brous margin. Involucell about 8-leaved, subu- 
late. Calix 5-toothed, acute. Petals cordately 
inflected ; many of the central sessile flowers 
sterile. Styles persistent, peltately dilated at 
the base, scarcely a line in length, divaricate, 
obtuse or rather truncate, and distinctly groov- 
ed on the upper side. Fruit elliptic-ovate, dor- 
sally compressed, flat, (as in Pastinacd saliva.') 
Seeds rather large, with a suberose prominent 
subalated margin continued inwards so as to 
cover the seed, slenderly striated on the back; 
strise 5. — JS\dL 
Sium rigidius, Willd., Mich., Pursh, &c. 
Sison marginatum, Mich ? 
About three feet high. The leaves are often entire; some- 
times deeply and remotely toothed. In swampy ground bor- 
dering the Delaware and Schuylkill, common. 
ambigua. £. (E. stem even, with few leaves ; leaves all pseu- 
do-pinnate, leaflets three to five pair ; narrow- 
linear, long and entire, all sessile and acute, 
under side glaucous ; involucrum 2 or 3-leaved ; 
umbels terminal, nearly solitary. Ons.^Root 
perennial, tuberous ? Stem tall, smooth, striate, 
fistulous and cylindric. Leaves distant, with 
