64 NEW SYLVA. 



lix and capsules grey tomentose — Canada, Lake 

 Champlain, Saranac and Oquago Mts. a small 

 ramose shrub pedal, flowers incarnate, leaves 

 only half inch long. — All the above sp. agree in 

 nothing but the tomentose leaves beneath, to 

 deem them all varieties would be preposterous, 

 as no character including them all could be fram- 

 ed ; but they afford like the 8 blended sp. of S. 

 salicifolia, fine illustrations of real natural spe- 

 cific deviations, similar to those of the Genus 

 Azalea ! now admitted as species. 



641. Spirea salicifolia L. Dec. &c. Q,uite 

 smooth, branches elongate terete yellowish, 

 leaves subsessile broadly lanceolate equaly ser- 

 rate, acute at both ends concolor, panicle ra- 

 cemose compound base foliose, bracts oblong. 

 — In North Europe, Sibiria and Origon, my 

 specimen is simple 2 feet long, leaves 3 inches 

 long one wide, flowers white peduncled crowd- 

 ed. Five other American sp. have been blend- 

 ed with this by all the botanists, which altho' 

 deviations perhaps are totally distinct from this: 

 I have compared them all carefully and ascer- 

 tained excellent peculiar characters in each, 

 they only agree in having thin smooth leaves 

 and the branches of the panicle nearly corym- 

 bose. Var. Slhirica Pallas fl. Ross. t. 21. dif- 

 fer branches yellowish, leaves unequaly serrate 

 panicle lax not foliose, flowers large incarnate. 

 Perhaps a peculiar species Sp. Sibirica Raf. 



642. Spirea flexuosa Raf. salicif. of many 

 Amer. bot. alba? Erhart. Mg. Q,uite smooth, 

 branches flexuose angular redish, leaves petio- 

 late oblong lanceol. deeply serrate, base entire 

 cuneate pale beneath, panicle racemose base fo- 

 liose, no bracts — Mts. Alleghanies and hills 

 from Canada to Virginia, pretty shrub ^ to 4 



