726 ARBORETUM AND FRUTICETUM. PART III. 
Spec. Char., §&c. Leaves roundish, lobed, crenated, gla- 
brous, reticulately veined. Flowers in umbel-like 
corymbs. Sepals ascending. Carpels glabrous. A *7% 
native of the alps of Altai. (Dec. Prod., ii. p. 543.)- 
Introduced in 1801 ; growing to the height of 1 ft. or - 
2ft.; and producing its abundant flowers in May. * 
This species is very handsome, with branches spread- 
ing horizontally, and bearing, in the flowering season, 
numerous compact corymbs of pure white flowers; 
which, combined with the neat appearance of the 
plant, and its glaucous leaves, rounded in their out- 
line, and yet lobed, render the species a very inte- 
resting and ornamental one. 
% 11. S. aupr'na Pall. The Siberian alpine Spirea. 
Identification. Pall. Fl. Ross., 1. p. 82. t. 20., according to Camb. Monog.; Dec. Prod., 2. p. 543. ; 
Don’s Mill, 2. p. 518. 
Engravings. Pall. Fl. Ross., 1. t. 20. ; and our fig. 432. 
Spec. Char.,§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., ii. p. 543.) A native 
of the wooded alps of Siberia; introduced 
in 1806 ; growing to the height of from 4 ft. 
to 6 ft.; and flowering in June. Its flowers 
are white. 
Remark, A kind of Spire‘a is extant, in some 
English collections, under the name of S. alpina; 
which must be very distinct from the above, as 
it has its flowers in lateral umbels, in the mode 
of S. hypericifolia, to which, in its leaf, it also 
assimilates. It does not resemble that species in being of upright growth; 
nor is it so tall; but it is dwarfer, and spreadingly branched. Its flowers 
are produced in April, almost before the leaves, and perhaps earlier than 
those of any other kind of Spirz‘a in British collections: they are not white, 
as those of S. hypericifolia, but of a yellowish or greenish white. Plants of 
this kind were raised from exotic seeds, in the Cambridge Botanic Garden, 
before 1824.— J. D. 
% 12, S, HyPERIcIFO‘LIA Dec. The Hypericum-leaved Spirea. 
Identification. Dec. Fi. Fr., 5. p. 645.3; Prod., 2. p. 543.; Don’s Mill., 2. p. 519. 
Synonymes. Hypéricum fritex Hort. ; Italian May. 
Engraving. Our fig. 433. 
Spec. Char., Sc. Leaves obovate-oblong, 3—4-nerved, “%hes 
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 native of Europe and 
America. A species that presents diversified appear- 
ances. (Dec. Prod., ii. p. 543.) Supposed by some to 
be a native of Canada; but Dr. Hooker thinks that, like q@g 
most of the species of the section to which it belongs, it Ga 
is only to be found wild in the Old World. 
Varieties. Seringe has characterised 6 forms of this species, which he 
describes as follows :— 
2 §S.h. 1 wralénsis Ser. S. crenata Lin., Fisch. in Litt., and Don’s Mill., 
il. p. 519.; S. hypericifolia Camb. Monog.— Branches rigid, thickish. 
Leaves ovate-rounded ; the whole margin crenated. A native of the 
Ural Mountains. 
% S.h, 2 Plukenetiana Ser. S. hypericifolia Lin. Sp.,701., and Don’s Mill., 



