73 l 2 ARBORETUM AND FRUTICETUM. PART III. 



Spec. Char., $c. Leaves stipuled, pinnate ; the leaflets sessile, opposite, 



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



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



native of Siberia, in moist places. (Dec. Prod., ii. p. 545.) 



Variety. 



«. S. s. 2 alphm Pall. Fl. Ross., i. p. 34. and 89. t. 25., Camb. Monog. 

 S. grandiflora Hort. Brit., No. 29267., and Sweet's Hort. Brit., 

 p. 194. ; S. Pallas/7 Don's Mill., ii. p. 520. — SufFruticose. Flowers 

 twice the size of those of the species, and disposed in corymbs. 

 Leaves smaller, and serrately incised. A native of eastern Siberia 

 and of Kamtschatka. (Dec. Prod., ii. p. 545.) This is the S. 

 grandiflora of Sweet's Hort. Brit., and our Hort. Brit., and is 

 very different from S. s. grandiflora, the S. grandiflora of Lodd., 

 described before, among the varieties of S. salicifolia, p. 730. 

 Description, S?c. S. sorbifolia is a branchy 448 



shrub, growing to the height of 6 ft. or 8 ft., 



with a round, brown-coloured, warty stem ; 



the wood of which is brittle, and hollow within, 



with a soft ferruginous pith. The leaves are 



thin in texture, and bright green on both sides. 



The flowers are in terminating panicles, small 



and white : they are odorous, but not agree- 

 ably so. According to Pallas, it is a native 



of eastern Siberia, in boggy woods and wet 



mountains, where it grows along with S. salici- 



folia, and attains the height of 6 ft. ; but, in 



dry rocky situations, it does not rise above 



1 ft. in height, and is subherbaceous. It was 



cultivated by Miller in 1759, and deserves a 



place in every collection, from its marked character, and from the beauty both 



of its foliage and its flowers. It throws up abundance of suckers, by which it 



is easily propagated. 



A pp. i. Species or Varieties of Spiraea not yet introduced. 



3£ S. Blume'x G. Don, S. chamasdrifblia jap6nica Blume Bijdr., 1114., is a native of Java and 

 Japan, with white flowers, and is, probably, nothing but a variety of S. chamadrifblia, it being con- 

 sidered such by the discoverer, Blume, though elevated to the rank of a species by G. Don. 



sfc S. lanceoluta Poir. {Don's Mill., ii. p. 518.) is a native of the Mauritius and China, with leaves 

 like those of S. salicifblia, and white flowers. 



Sfe S. arg6ntea Mutis has the whole plant clothed with silky silvery down. It is a native of New 

 Grenada ; and, if introduced, would probably be found, at first, rather tender; but, if our conjecture, 

 as to the constitution of truly natural genera be correct, it will be found capable of being accli- 

 matised. 



Sfe S. Thunbirg\\ Blume, and Don's Mill., 2. p. 319., is a native of Java and Japan, with linear- 

 lanceolate leaves, and white flowers. 



St S. magellanica Poir, and Don's Mill., 2. p. 519., has lanceolate leaves, and white flowers; and, 

 being a native of the Straits of Magellan, will, doubtless, be found quite hardy. 



sifc S.japdnica Sieb. ex Blume, and Don's Mill., 2. p. 519., is said to resemble the preceding species. 



sife S. Menzilsn Hook. Fl. Bor. Amer., p. 173., and Don's Mill., 2. p. 520., is thus described : — 

 Branches pubescent at the apex. Sepals reflexed. Leaves elliptic. Panicle crowded with rose- 

 coloured flowers. It would be a desirable introduction, and will, doubtless, soon be procured. 



& S. Douglasii Hook. Fl. Bor. Amer., p. 172., and Don's Mill., 2. p. 520. From Dr. Hooker's 

 description of this sort, it appears to us to be the same, or nearly so, as the preceding. It is a 

 native of the north-west coast of America, about the Columbia and the Straits of Fucas where it 

 is said to grow to the height of 4 ft. or 5. ft. 



Jifc S. callosa Thunb., S. expansa Wall., is a native of Japan and Nepal, and said to differ from 

 S. salicifblia in the leaves being nearly stalked. It grows to the height of 4ft., and has showy red 

 flowera 



ife S. cceruUscens Poir. has sessile bluish-coloured leaves, and white flowers, and, being a native of 

 India, would probably prove only half-hardy in British gardens. 



* S. discolor 1'ursh I'l. Amer. Sept., 1. p. 'J42., is described by that botanist from specimens 

 which he saw in a herbarium. It is said to be found on the banks of the Kooskoosky ; to have dis- 

 f oloured leaves ; and to grow to the height of about 5 ft. 



Almost all the known species of ,S'pira; N a being quite hardy, of the easiest culture, and very free 

 floweret*, it is much to be defired that a part or all of the above species could be procured. We 

 recommend the lubject to those who have friends and correspondents in the countries where these 

 ire indigenous 



