XXVI. flOSA CE^ : 6'PIRiE A. 



303 



I on hii^h rocks. Height 1 ft. to 2 ft. Introduced in 1825. Flowers white; 

 Juneand July. Capsule reddish ; ripe in September. 



A very distinct little species approaching S. vacciniifolia, I). Bon. H. S. 



The 3-lobed-/efl!iW Spiraea. 

 ; Dec. Prod., 2. p. 543. 

 Brit., t. 68., as S. trl- 



f Hl 9. S, trilob.\Va L. 



1 tdentification. Lin. Mant., 2-14. ; Camb. Monog. 

 i Synonyme. S. triloba Don's Mill. 2. p. 518. 

 I Engravings. Pall. Ross., 1. t. 17. ; Wats. Dend 

 ! loba ; and our^^'. M2. 



ISpec. Char., ^c. Leaves roundish, lobed, crenated, 



glabrous, reticulately veined. Flowers in umbel-like -^^j 

 corymbs. Sepals ascending. Carpels glabrous. (Dec. i^mf' 

 Prod.) A low erect shrub. Alps of Altai. Height 

 1ft. to 2 ft. Introduced in 1801. Flowers white ; 

 May. Capsule reddish ; ripe in September. 



This species is very handsome, with branches spread- 

 iing horizontally, and bearing, in the flowering season, 

 Inumerous compact corymbs of pure white flowers ; 502. s.tniobMa. 



iwhich, combined with the neat appearance of the plant, 



land its glaucous leaves, rounded in their' outline, and yet lobed, render the 

 rspecies a very interesting and ornamental one. 



^ 10. S. alpi'na Pa/l. The Siberian alpine Spiraea. 



Identification. Pall. Fl." Ross., 1. p. 82. t. 20., according to 

 ' Camb. Monog.; Dec. Prod., 2. p. 543.; Don's Mill., 2. p. 518. 

 lEngravings. Pall. Fl. Ross., 1. t. 20. ; and ourj?g. 503. 



Spec. Char., Sj-c. Leaves lanceolate-oblong, ses- 

 sile, serrulated, glabrous ; the midrib pinnately 

 branched. Flowers in terminal, stalked, and, 

 in many instances, leafless, corymbs. Sepals 

 ascending. (Dec. Prod.) An erect shrub. 

 Siberia, in wooded alps. Height 4 ft. to 6 ft. 

 Introduced in 1806. Flowers white ; June and 

 July. Capsule reddish ; ripe in September. 



The corymbs of flowers being large in propor- 

 ion to the leaves rentiers this species very orna- 

 nentalwhen in bloom ; and its beauty is farther 

 leightened by the plant being of erect growth. 



50,^. S. alplna. 



a:^ 11. S. HYPERiciFo'^Li A Dec, 



The Hypericum-leaved Spiraea. 



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



'entification. Dec. Fl. Fr., 5. p. 64.5. ; Prod., 2. p. 543. 

 ynonymes. Hypericum fritex Hort. ; Italian May. 

 'ngravings. See Varieties. 



pec. Char., S^c. Leaves obovate-oblong, 3 t-nerved, entire or toothed, 

 glabrous, slightly downy ; primary veins pinnately branched. Flowers in 

 either peduncled corymbs, or sessile umbels. Pedicels glabrous, or slightly 

 downy. Sepals ascending. A species that presents diversified appearances. 

 (Dec. Prod.) An erect shrub. Supposed by some to be a native of Ca- 



i nada ; but Smith and Hooker think that, like most of 

 the species of the section to which it belongs, it is only 

 to be found wild in the Old World. Height 4 ft. to 6 ft. 

 Introduced in 1640. Flowers white ; June and July. 

 Capsule reddish ; ripe in September. 



meties. Seringe has characterised six forms of this species, 

 which he describes as follows : 



s S. h. 1 uralensis Ser. S. crenata Lin., Fisch. in 

 Litt.. and Dons Mill. ii. p. 519. ; S. //ypericifolia 

 ; Camb. Monog. (Our fig. 504.) Branches rigid, ^o*. i-. /:. r.-,i^r.sis. 



