OF NORTH AMERICA. 77 



The habit is peculiar, leaves opposite petio- 

 late, flowers terminal cymose or paniculate. It 

 is therefore a natural Genus, having affinities 

 with the Myrtoides, Hederacea and Viburnides. 

 The Gr. 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, 6 to 5 feet high, leaves 2 or 3 inches 

 Jong, 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- 

 gage to the subgenus Megasteira. 



680. HYDR. (Meg.) GLAucARaf. radiata glau- 



