xxvi. 



309 



jtt 23. S. LJEVIGA'TA L. The smooth-leaved Spiraea. 



Identification. Lin. Mant, 244.; Camb. Monog. ; Dec. Prod, 2. p. 544. ; 



Don's Mill., 2. p. 519. 

 Synonymes. S. altaicensis Laxm. Nov. Act. Petrop. 15. p. 555. t. 29. f. 2. ; 



S. altaica Pall. Fl.Ross. 1. p. 272. 

 Engravings. Nov. Act. Petrop., t. 29. f. 2. ; Pall. Fl. Ross., 1. t. 23. ; and 



omjig. 522. 



Spec. Char., $c. Leaves obovate-oblong, perfectly smooth, 

 entire, sessile, tipped with a small mucro. Branchlets 

 of the panicle cylindrical. Bracteas linear, rather shorter 

 than the calyx. Lobes of the calyx triangular, ascending. 

 (Dec. Prod.) A spreading shrub. Siberia, in valleys at 

 the foot of the more lofty of the Altaian Mountains. 

 Height 2ft. to 4ft. Introd. in 1774. Flowers white ; 

 May and June. Capsule reddish ; ripe in September. 

 A very interesting and handsome species, with a habit 



exceedingly dissimilar to that of spiraeas in general. 5a8 . s.i ffi vi g ata. 



m 24. S. ^RI^EFO'LIA Smith. The White-Beam-tree-leaved Spiraea. 



Identification. Smith, in Rees's Cyclop., vol. 33. ; Bot. Reg., 1. 1365.; Dec. Prod., 2. p. 544. ; Don' 



Mill., 2. p. 520. 

 Engravings. Bot. Reg., t. 13C5. ; and our figs. 523, 524. 



Spec. Char., fyc. Leaves elliptical, oblong, 

 more or less lobed, toothed, pale, villose 

 beneath. Panicle villose. (Dec. Prod.) 



' An erect bushy shrub. North America, 

 principally on the north-west coast. 

 Height 6 ft. to 8 ft. Introduced in 1827. 

 Flowers white ; June and July. Capsule 

 reddish ; ripe in September. 



A free-growing dense bush, prolific both 

 in leaves and flowers ; and, as the latter 

 appear at a season when the flowering of 

 shrubs is comparatively rare, it is justly 

 considered as a most valuable addition to 

 It is perfectly hardy, will grow in any free soil, and is easily 

 propagated either by division or by seeds, which it ripens in abundance. 



624. S. ariaef6Ha. 



British gardens. 



iv. Sorbdria Ser. 



Sect. Char. Leaves pinnate, resembling, as the name implies, those of the 

 mountain ash, or other species .of Pjrus belonging to the section 56rbus. 



Sfc 25. S. 50RBIFO V LIA L. The Sorbus-leaved Spiraea, 



Identification. Lin. Sp., 702. ; Camb. Monog. ; Dec. Prod., 2. p. 545. 



Synonyme. S. pinnata Mcench Metfi. 633. 



Engravings. Gmel. Fl. Sib., 3. p. 190. t. 40. ; Schmidt B;,um., 1. t. 58. ; and our Jig. 52f>. 



Spec. Char., fyc. Leaves stipuled, pinnate ; the leaflets sessile, opposite, lan- 

 ceolate, doubly and sharply serrated. Inflorescence a thyrse-like panicle. 

 Torus wholly connate with the tube of the calyx. Ovaries connate, 5. 

 (Dec. Prod.) A thick stiff-branched shrub. Siberia, in moist places. Height 

 3ft. to 6ft. Introd. in 1759. Flowers white; July and August. Capsule 

 reddish ; ripe in September. 



Variety. 



S. s. 2 alpina Pall. Fl. Ross. i. p. 34. and 89. t. 25. S. grandiflora 

 Sweet's Hort. Brit. p. 194.; S. Pallasw Don's Mill. ii. p. 520. 

 Suff'ruticose. Flowers twice the size of those of the species, and 

 disposed in corymbs. Leaves smaller, and serrately incised. A na- 

 tive of Eastern Siberia and of Kamtschatka. (Dec. Prod.) This is 

 x 3 



