OF NORTH AMERICA. 77 



The habit is peculiar, leaves opposite petio- 

 late, flowers terminal cyniose or paniculate. It 

 is therefore a natural Genus, having atlinities 

 with the Myrtoides, Hederacea and Viburnides. 

 The Gr. Itea and Cunonia ditler by free pistil. 



677- Hydrangea (Apl.) vulgaris Mx. P. B. 

 E. Sec arborescens L. Slc. 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, B 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, 6'yme 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 niuch larger than in 

 the last, with large lanceolate, petals, calix an- 

 gular, stamens erect longer than petals. 



679. Hydrangea (3Ieg,} acuta Raf. Bran- 

 ches sub angidar 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.) GLAucARaf. radiata glau- 



