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ARBORETUM AND FRUTJCETUJNl. 



PART III. 



Synonyme. S. aquilegifSlia Pall. Itin., 3. A pp. 734. No. 94. 

 Engravings. Pall. Fl. Ross., 1. t. 18. ; and oar Jig. 437. 



Spec. Char., 4"c. Leaves obovate, obtuse, indistinctly 

 3-lobed, inconspicuously 3-nerved, glaucous beneath. 

 Flowers in lateral sessile umbels. A native of the 

 alps of Dahuria. (Dec. Prod., ii. p. 543.) De Can- 

 dolle asks whether this may not be a variety of S. 

 ^ypericifolia ; which, we think, it most probably is. 

 In Martyn's Miller, it is said to be an intermediate 

 species between S. crenata and S. triloba. Pallas 

 savs that it is found in Dahuria, along with S. chaniae- 

 drifolia and 5'. alpina (No. 11. p. 726. fig. 432.). 

 The name signifies that a leaf of this species of 

 5'piraE^a resembles a leaflet of some kind of T'halic- 

 trum. 



Ht 14. S. pikowie'nsis Besser. The Pikow Spirasa. 



Identification. Besser Enum. PI. Pod., p. 4<5. No. 1428. ; Dec. Prod., 2. p. 543. ; Don's Mill., <i. 

 p. 519. 



Spec. Char., SjC. Leaves with three primary veins, and serrate at the tip, cuneate-lanceolate, ob- 

 tuse, rarely pointed. Flowers in pcduncled corymbs. (Dec. Prod., ii. p. 543.) It is a native about 

 Pikow, ill Podolia ; and is said to grow from 3 ft. to 4 ft. in height. It produces its white flowers in 

 June and July, and was introduced in 1807, but we have never seen it. 



a 15. S. rE.A.NOTHiFo'LiA Horn. The Ceanothus-leaved Spiraea. 



Identification. Horn. Hott. Hafn., 2. p. 4(>li. ; Dec. Prod., 2. p. 544. 



Spec. Char., SfC. Leaves ovate, rounded at the base, serrated from the middle to the tip with sharp 

 unequal teeth. Flowers in indistinctly pcduncled terminal corymbs. {Dec Prod., ii. p. 544.) A 

 shrub, the native coiuitry of which is unknown, which is said to grow to the height of 3 ft. or 

 4 ft., to have been introduced in 1823, and to produce its white flowers in June and July. We 

 have not seen the plant 



* 16. S. CORYMBO'S.4 Raf. 



The corymbose^ou'enHg Spiraea. 



438 



Identification. Rafin. Pricis des D^couvertes Somiologiques, ou Zoologiques et 

 Botaniques (I'alerme, 1814), p. 36. ; and in Desv. Journ. Bot, 1814, p. 168. ; 

 Lodd. Bott. Cab., t. 671. ; Dec. Prod., 2. p. 544. 



Engravings. Lod. Bot. Cab., t. 671. ; and our fig. 438. 



Sjjec. Char., Sfc. Leaves oval-oblong, unequally serrated, 

 glabrous, green above, hoary below. Flowers trigynous, 

 disposed in terminal corymbs. (Dec. Prod., ii. p. 544.) A 

 native of Virginia; introduced in 1819; growing to the 

 height of 4 ft. or 5 ft. ; and flowering in June and July. 

 This is a very desirable species, on account of its large 

 corymbs of white flowers, and its distinctness in external 

 character. 

 Variety. 



sk S. c. 2 sororia, S. sororia Penny in Hort. Brit., is a 



smaller plant, and flowers rather later than the species. It was 

 introduced into the Epsom Nursery, from North America, in 1829. 

 It seldom e.vceeds the height of 2 ft. ; and its ^-^q "^^^^Si^ 



white flowers often remain on till October. 



ja 17. S, rACCiNiiFO^LiA D. Don. The Vaccinium- 



leaved Spiraea. 



Identification. Don. Prod. Fl. Nep., 1. p. 227. ; Dec. Prod., 'i. p. 546. ; 



Don's Mill, 2. p. 518. 

 Engravings. Bot. Cab., t. 1403. ; and our^^. 439. 



Spec. Char., Sfc. Upright. Branchlets hairy. Leaves 

 elliptical, acute, serrated at the tip, glabrous, glaucous 

 on the under surface. Flowers white, disposed in ter- 

 minal toraentose cymes, a few in a cyme. (Dec. Prod., 

 ii. p. 546.) A native of Nepal ; introduced in 1820; 

 growing to the height of 2 ft. or 3 ft.; and producing 

 its white flowers in July and August. 



