[ so ] 
occidentalis. 
CLASS IV. TETRANDRIA. 
ORDER I. MONOGYNIA. 
72. CEPHALANTHUS, i. Gen. pi. 147. (Ruhiacete.) 
Common calix 0 ; proper superior, small and 
angular, 4-cleft. Corolla tubular, slender, 
4-cleft. Stamina included ; stigma globose. 
Capsule mostly bipartile, (2 to 4,) 2-celIed, 
2-seeded ; cells semi-bivalve ; exterior valve 
angular, indurated, interior flat and flexile. 
Seed solitary, sheathed at the apex with 
a suberose callus. Receptacle globose, hai- 
ry. — Nutt. 
1. C. leaves opposite and ternate. — Willd. 
Icon. Pluk. aim. t. 77. f. 4. 
American Button-wood. Globe-fiowered Shrub. 
Pond Dogwood. 
Nothing* is more common in swamps, on the borders of ri- 
vers, creeks, and ponds, than this shrub. The shores of the 
Delaware and Schuylkill abound with it. About 5 feet is 
commonest height, though it not unfrequently attains a great- 
er stature. The inner bark is medicinaL July. 
73. DIPSACUS, X. Gen. pi. 148. fBipsacea.J 
Flowers collected into an ovate or roundish 
capitulum. — Common calix many -leaved, fo- 
liaceous, (involucrum) ; proper superior, of 
1 leaf. Corolla 4 lobed. Receptacle pa- 
leaceous, chalF rigid, mostly longer than the 
flowers. Pappus cup-shaped. — NutU 
