144 ^ 
PENTANDRIA, DIGYNIA. 
lacerately serrate; umbel terminal, solitary, 
lateral branchlets biilbiferous.* — JSTutt. 
A small and singular plant, resembling Ammi capillaceiim. 
On the shores of the Delaware, near the city; Mr. Nuttall. 
Perennial. July. 
141. URASPERMUM. Nutt. Gen. Am. pi. vol. 1. p. 192. 
( Umbelliferce.^ 
Fruit sublinear, solid, acutely angular, cau- 
date, and without strise; angles subsulcate, 
hispid; commissure sulcate; receptacular 
axis semibifid ; style subulate, persistent, 
terminating the fruit. Universal involu- 
crum none. — JST utt. 
ciaytoni. 1. U. stems about a foot high, striated, always 
more or less pubescent, but at first of a hoary 
whiteness. Leaves only about 2 on each stem ; 
ternate, with the subdivisions from 3 to 5-leav- 
ed ; terminal leaflets rhomboidal, acute, lateral 
ones more irregular and oblong, sometimes sub- 
pinnatifidly lobed, but generally incisely tooth- 
ed, dentures mostly obtuse with a small point. 
Umbels axillary and terminal, rays about 5. 
Involucrum wanting, or of 1 or 2 small leaves. 
Umbellets small, exterior hermaphrodite flow- 
ers about 5, males about 10, all pedunculate, 
peduncles of the male-flowers capillary ; invo- 
lucell 5-leaved, linear-lanceolate, acuminate, 
soon after flowering deflected. Styles filiform, 
as long as the germ, erect and divaricate, with 
inconspicuous stigmas. Gei’m distinctly villous 
towards the base. No vestige of a calix. Fruit 
linear-lanceolate, black and shining, subulated, 
but without rostrum. Seed caudate, (an inch in 
length, including the cauda, which is about 3 
lines long) acutely quadrangular, without either 
ribs or striae ; intervals flat and even, cuticle 
