66 SEW SYLVA 



all subpetiolate acute and sharply serrate, pan- 

 icle racemose not foliose but with linear bracts 

 — Alleghany Mts. and Alabama, 2 or 3 feet 

 high ramose, leaves biuncial very broad, flowers 

 white. A very distinct sp. 



647. Si'iREA ciLiATA Raf. salicif. Elliot. Stem 

 angular pubescent, leaves sessile imbricate con- 

 similar cuneate acute, base entire, ciliate, sharp- 

 ly serrate upwards, panicle racemose glomerate 

 elongate, bracts hnear — From the River Wa- 

 bash to Carolina near streams chiefly, a very 

 peculiar sp. quite ciliolate, middle nerve often 

 also, bipedal, leaves small uncial, flowers white 

 Var. 1. petiolata, leaxes subpetiol. broader, 2 

 multijlore panicle ramose. 



648. Spirea obovata Raf. dec. 25. crena- 

 ta Tor. Eat. Mg. hypericif. var Beck, chame- 

 drif Pursh. C^uite smooth cespitose suffruti- 

 cose creeping, branches flexuose angular red- 

 ish, leaves similar obovate subsessile obtuse, 

 base acute entire, upwards unequaly serrate, 

 corymbs racemose terminal, bracteoles linear, 

 petals obovate crenate undulate — Rocky sum- 

 mits of Mattawan and Kiskanom Mts. of iVew 

 York disc. 1817, descr. 1818 in my decads, 

 mistaken or omitted by all our botanists, proba- 

 bly a boreal plant. Shoots or branches assur- 

 gent woody only 4 to 16 inches high, leaves un- 

 cial concolor, panicle thyrsoidal ovate formed 

 of small lateral corymbs, thus forming a pass- 

 age to the subg. Chamedryon, flowery white 

 blossoming in June. Having obtained speci- 

 mens of the real Spir. crenata, ulmifolia and 

 chamedrifolia I can vouch that this is quite dif- 

 ferent and no Chamedryon. Var. Sibirica of 

 Pallas nameless fig. t. 26 f. 2, merely differ by 

 narrow leaves nearly entire glaucous beneath. 



