300 



ARBORETUM ET FRUTICETUM BRITANNICUM. 



white ; June and July. Capsule inflated red ; ripe in September. Decaying 

 leaves purplish red, mixed with yellow. Naked young wood light brown. 

 Hardy, and very ornamental, from its abundance of white flowers, which are 

 produced in corymbs, and resemble those of the Guelder rose ; and from the 

 numerous inflated reddish capsules which succeed the flowers. Propagated 

 by division of the root ; but sometimes by layers, or by cuttings of the 

 young wood put, in autumn, in a shady border, in a sandy soil. 



Varieties. 



& S. o. 2 tomentella Ser. has the peduncles and calyx tomentose. (Dec. 



Prod.) It is found at the Grand Rapids of the Columbia River. 

 -* S. o. 3 monogyna. S. monogyna Torrey, Don's 



Mill. 2. p. 518. A native of the Rocky Moun- 



tains, where it grows to the height of 3 or 4 feet. 



It is considered by Sir W. J. Hooker as a va- 



riety of S. opulifolia. 



& 2. S. CAPITA^TA Ph. The cn[ritate-corymbed Spiraea. 



Identification. Ph. Fl. Amer. Sept., 1. p. 342. ; Camb. Monog. ; Dec. 



Prod., 2. p. 542.; Don's Mill., 2. p. 518. 

 Synonyme. S, opulif61ia var. Hook. 

 Engraving. Our Jig. 349. from a specimen in the Lambertian herbarium. 



Spec. Char., fyc. Leaves ovate, doubly toothed, almost 

 lobed ; beneath reticulate and tomentose. Flowers 

 disposed in terminal subcapitate corymbs placed on 

 very loni; peduncles. Calyx tomentose. (Dec. Prod.) 

 A deciduous shrub. N. America, on its eastern coast 

 by the River Columbia. Height 4 ft. to 6 ft. Intro- 

 duced in 1827. Flowers white; June and July. 



. 



Ser. 



Derivation. From Cham^drys, the name of the germander ; from a similarity in the form of the 

 leaves. 



Sect. Char. Ovaries distinct. Torus with its base connate with the tube of 

 the calyx, but with its tip separate. Carpels not inflated. Flowers each 

 upon a distinct pedicel, and disposed in umbels or corymbs. Leaves entire, 

 or toothed, without stipules. (Dec. Prod., ii. p. 542.) 



3. S. c-HAftOEDRiFo v LiA L. The Germander-leaved Spiraea. 



Identification. Lin. Sp., 701. ; Camb. Monog. ; Dec Prod., 2. p. 312. ; Don's Mill., 2. p. 518. 



Synonyme. S. cantoniensis Lour. 



Engravings. Pall. Fl. Ross., t. 15. ; and our Jig. 495. 



Spec. Char., $c. Leaves ovate, cut at the tip in a serrated manner, glabrous. 

 Flowers upon long slender pedicels, in hemispherical corymbs. Sepals 

 veiny, reflexed. (Dec. Prod.) An erect shrub. Siberia, Kamtschatka, Da- 

 huria, the N. W. coast of N. America, China, and Japan. Height 2 ft. 

 to 8ft. Introduced in 1789. Flowers white; June and July. Capsule 

 reddish ; ripe Sept. Naked young wood light brown. 

 Varieties. Seringe enumerates the first four of the fol- 

 lowing forms of this species ; to which, we think, might 

 be added S. tflmifolia, S. flexuosa, S. crataegifolia, S. 6e- 

 tulsefolia, and, perhaps, some others. 



& S. c. 1 vulgaris Camb. Monog. Leaves with 

 the disks broad and glabrous ; the petioles ci- 

 liated. 



A S. c. 2 media Ph. Fl. Amer. Sept. i. p. 342., Camb. 

 Monog., and our j%. 494. Leaves smaller, slight- 

 ly villose upon both surfaces. Flowers smaller. 

 Wild in Canada, and upon the rocks of Dahuria. 4C4 



