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 dong.— 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. Spiiiea salicifolia L. Dec. &c. Quite 
smooth, branches elongate terete yellowish, 
leaves subse^sile 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. Sihiriea Pallas fl. Ross. t. 21. dif- 
fer branches yellowish, leaves unequaly serrate 
panicle lax not foliose, flowers large incarnate. 
Perhaps a peculiar species Sp. Sihiriea Raf. 
642. Spirea flexuosa Raf. salicif. of many 
Amer. bot. alba? Erhart. Mg. Quite 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 2 to 4 
