OF NORTH AMERICA. 
4 £ 
The habit is peculiar, leaves opposite petio- 
iate, flowers terminal cymose or paniculate. It 
is therefore a natural Genus, having affinities 
with the Myrtoides, Hederacea and Viburnides. 
The G. Itea and Cunonia differ by free pistil. 
677. Hydrangea (Apl.) vulgaris Mx. P. B. 
E, & c arborescens L. &c. Branches terete 
sulcate pale, leaves ovatoblong acuminate, 
equaly serrate smooth pale beneath, petiols and 
nerves pubescent, base rounded, cymes naked 
pubescent uniform, 2 oblong bracts — Alleghany 
Mts, and hills from Pennsylv. to Carolina and 
Kentucky, 8 to 5 feet high, leaves 2 or 3 inches 
long, flowers white and small. Var. carnea , 
flowers incarnate. 
678. Hydr. (Apl.) paniculata Raf. Quite 
smooth, branches terete fuscate, leaves ovato- 
blong both ends acute, glaucous on both sides, 
nearly entire or remotely dentate, cyme panicu- 
late lax with oblong sessile bracts — A very dis- 
tinct Sp. found without locality in Collins herb, 
probably from Origon and Sibiria, leaves large 
4 inches long 2 wide, petiols shorter uncial 
slightly ciliolate, flowers much larger than in 
the last, with large lanceolate petals, calix an- 
gular, stamens erect longer than petals. 
679. Hydrangea (Meg.) acuta Raf Bran- 
ches sub angular purplish, leaves ovatoblong un- 
equaly serrate, acuminate, base acute entire, 
pale beneath, nerves puberulent, cymes pubes- 
cent naked hardly radiate, bracts small ovate — 
Apalachian Mts. Leaves very thin, cymes 
small, commonly with 1 to 3 small neutral flow- 
ers unequaly trifid acute white. Thus a pas- 
sage to the subgenus Megasteira. 
680. Hydr. (Meg.) GLAucAllaf. radiata glau- 
