OF NORTH AMERICA. 63 



flowers, it deserves to be deemed a peculiar sp. 

 by narrow leaves not white beneath, and lax 

 rose flowers. 



637. Spirea ferxjginea Raf. stems angular 

 simple fuscate tomentose, leaves oblong cune- 

 ate sessile, broadly serrate, beneath rusty to- 

 mentose, panicle ample Ibliose at the base, 

 branches spicate, flowers subsessile, calix and 

 capsules rusty rugose scabrous — East Kentuc- 

 ky, Mts. Wasioto and Apalachian, shrub 2 or 3 

 feet high, woody at base, fl^owers purple : easily 

 known by the color, cuneate leaves, spikes and 

 capsules. Var. angu^tifolia, leaves narrow 

 cuneate, spikes slender. Pine barrens of New 

 Jersey. 



638. Spirea glomerata Raf. tomentosa 

 Med. fl. tab. 88 stem simple terete sulcate fus- 

 cate tomentose, leaves petiolate elliptic or ova- 

 toblong jagged serrate, beneath fulvous tomen- 

 tose, panicle slender spicate, flowers subsessile 

 glomerate, calix fulvous tomentose — Alleghany 

 Mts. very small suffruticose pedal without bran- 

 ches, flowers small incarnate. Near to Sp. ro- 

 sea, but different leaves, sessile flowers quite 

 jagged or duplicate serrate, nankin color be- 

 neath. Var. 1 major, bipedal, 2 pallida. 



639. Spirea glomerata var. cinerea Raf. 

 differ, virgate, stem subterete not striate, ashy 

 tomentose, leaves also beneath, and calix like- 

 wise — Pine barrens of New Jersey, pedal, flow- 

 ers quite glomerate sessile redish. 



640. Spirea parvifolia Raf. Stem branch- 

 ed angular purplish smooth, branches tomen- 

 tose, leaves sessile small elliptic base entire, 

 serrate above, beneath grey tomentose, panicle 

 spicate glomerate, flowers sessile, crowded, ca- 



