CHAP, XLII. ROSA CEE. SPIRE‘A, 723 
to 1 franc each ; and at New York, from 25 cents to 50 cents each. Seeds of 
one or two of the species may be procured, in London, at 6d. per packet. 
§ i. Physocarpos Camb. 
Derivation. From phusa, abladder, and karpos, a fruit; in reference to the bladdery carpels. 
Sect. Char. Ovaries connected at the base. Torus lining the calycine tube. 
Carpels bladdery, rather membranous. Ovula 2—3, fixed to the semini- 
ferous margin of the carpel, ovoid, at first horizontal, but at length sus- 
pended, Flowers hermaphrodite, disposed in umbels. Pedicels 1-flowered. 
Leaves toothed, or somewhat lobed, usually stipulate. (Don’s Mill., ii. 
p- 517.) 
% 1, S. oputiro\L1aA LZ. The Guelder-Rose-leaved Spirza, or Virginian 
Guelder Rose. 
Identification. Lin. Sp., 702.; Camb. Mon.; Lois.in N. Du Ham., 6. p. 61. Dec. Prod., 2. 542. ; 
Don’s Mill., 2. p. 517. 
Synonyme. Nine Bark, Amer. 
Engravings. N. Du Ham., 6. t. 14.; and our figs, 427, 428. 
Spec. Char., §c. Leaves lobed, or 3-lobed, and partaking of 428 
an ovate figure, doubly serrated, petioled, and many of them 
= Stipuled. Flowers white, nume- 
# rous, disposed in stalked hemisphe- 
rical corymbs; the pedicel of each 
flower slender and glabrous. Sepals 
spreading. Torus wholly connate 
with the tube of the calyx. Ovaries 
connate with each other at the base. 
Ovules in each 2—3, affixed to the 
margin, egg-shaped, at first horizon- 
tal, at length the one pendulous, the rest ascending. 
Se Carpels bladdery, rather membranaceous, large and 
aN diverging. Seeds obovate, glossy, and yellow. (Dec. 
rt Prod., ii. p. 542.) A shrub, a native of North Ame- 
a rica, from Canada to Carolina; found on the banks 
of rivers, particularly among the mountains, where it is generally known by 
the name of Nine Bark. It was introduced by Bishop Compton, in 1690; 
and, in British gardens, grows to the height of 8 ft. or 10 ft., flowering in 
June and July. It is 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. The leaves, which are lobed and veined, die off of 
a purplish red mixed with yellow, In British nurseries, the plant is gene- 
rally 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. 
Variety. 
x2 S. 0. 2 tomentélla Ser. has the peduncles and calyx tomentose. (Dec. Prod., ii. p. 542.) Itis 
found at the Grand Rapids of the Columbia river. 
Wy 2 


427 


% 2. 8. capira’ra Ph. The capitate-corymbed Spireza. 
pa Ph, Fl. Amer. Sept., 1. p. 342.; Camb. Monog. ; Dec. Prod., 2. p. 542. ; Don's Mill, 
ii. p, 518. 
Synonyme. SS. opulifdlia var. Hook. 
Spec. Char., &§e. Leaves ovate, doubly toothed, almost lobed; beneath reticulate and tomentose, 
Flowers disposed in terminal subcapitate corymbs placed on very long peduncles. Calyx tomen- 
tose. Spontaneous in North America, on its eastern coast, and by the river Columbia. (Dec. 
Prod., ii. p. 542.) -According to Sweet’s Hortus Britannicus, ed. 1830, p. 194., this was introduced 
into Britain in 1827. It has white flowers, and has produced them here in June and July. We 
have not seen the plant. ; 
& 3. S. mono’cyNA Torrey. The monogynous Spirea. 
A shrub growing to the height of 3 ft. or 4 ft. on the Rocky Mountains, (Don’s Miil., ii. p. 518.) No 
yet introduced. 
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