PENTANDRIA, DIGYNIA. 137 
129. HYDROCOTYLE. Gen.pl. 457. (^Umbelliferx.) 
Umbel simple. — Calise none. Petals entire, 
spreading. Styles short; stigmas capitate. 
Fruit suborbicular or reniform, laterally 
compressed. Seed tricostate, and flat, dor- 
sal rib sometimes obsolete; commissure 
flat, linear, and immarginate. Involucrum 
various. — JST utt. 
1. H. leaves reniform, slightly 7-lobed, crenate ; Americana, 
umbels few-flowercti, sessile. — Lamark. 
American Penny-wort. 
A small subaquatic plant with very thin and delicate leaves, 
which dry transparent when prepared for the herbarium. In 
swamps, boggy ground, and on the borders of our rivers, 
creeks and rivulets: common. Flowers very small, greenish- 
white. Perennial. June, July. 
2. H. leaves peltate, crenate emargiiiate at the umbeito 
base ; umbels pedunculated, many-flowered, 
flowers pediceilated. 
Umhelled Penny-worL 
About the same size as No. 1, and easily distinguished from 
it by its umbellated flowers. In similar places, frequent. Pe** 
rennial. May, July. 
130. SANICULA. Gen. pi. 458. fUmbelltferee.J 
Umbel nearly simple, capitate. — Calix S- 
parted. Petals and stamina inflected. 
Fruit muricated, with uncinate setae. Flow- 
ers of the disk numerous, abortive. — J\Tutt. 
1. S. leaves digitate, leaflets oblong, incised ; fer- Mariiandica. 
tile flowers sessile, generally by three’s ; sterile, 
on footstalks, numerous.— -PwsA. 
In woods, common. Perennial. June. 
13* 
