218 
DECANDRIA, PENTAGYNIA. 
Sedoides. 
teiTiatura. 
O. ambigua, Salisb. in Act. Soc. Linn. Lond. 2. t. 
23. f. 4. 
0. corniculata, FI. Dan. t. 873. 
Icon. Jacq. oxal. t. 4. (Pursh.) 
Likewise known by the name of sorrel. In similar places 
with No. 2, which it resembles very much. Perennial. June, 
July. 
220. PENTHORUM. Gen. pi. 790. {Semperviva.) 
Calix 5 to 10 cleft. Petals 5 or wanting. 
Capsule with 5 cusps, and 5 cells, cells 
dividing transversely, many-seeded ; seeds 
minute. — 
1. P. stem branched, angular; leaves lanceolate, 
subsessile, unequally deeply serrate ; spikes ter- 
minal, paniculate, alternate and cymose ; seeds 
scrobiform. — Willd. and Pursh. 
Icon. Act. Ups. 1744. t. 2. 
American Fenthorum. 
About twelve inches high ; flowers pale-yellow. In ditches 
and swamps, or boggy-ground, common. Perennial. June, 
July. 
221. SEDUM. Gen. pi. 789. {Sempervivx.) 
Calix S-cleft. Petals 5. Five nectariferous 
scales at the base of the germ. Capsules 
5, superior, many-seeded ; openine: inter- 
nally. — J\Tutt. 
1. S. small, repent; leaves flat, rotund-spathu- 
late, ternate; cymes sub-3-spiked, flowers ses- 
sile, octandrous. — Mich. 
S. saxatilis, floribus albis, &c. Clayt. Virg. 891. 
S. Amerianum, Herb. Banks. 
