492 ARBORETUM ET FRUTICETUM BRITANNICUM. 
E. pulverulénta Pers., Steredxylon pulveruléntum Ruiz ef Pav. is a 
shrub, hairy in every part, with white flowers; growing to the height of 8 or 
10 feet. It is u native of Chili; and plants of it were in the Horticultural 
Society’s Garden from 1831 till 1837-8. Twenty other species are described 
in Don’s After, iii. p. 193. to p. 195., all natives of South America, and proba- 
bly as hardy as those above mentioned ; but it does not appear that any of 
them have been introduced, 
Orver XXXIV. SAXIFRA'‘GEA, 
Taine HYDRA/’NGEA. 
ORD. CHAR. Calye 4—5-parted. Petals 5, inserted between the lobes of the 
calyx. Stamens 5 or 10. Disk perigynous. Ovarium of 2 to 5 carpels. 
Stigmas sessile. Fruit 1—2-celled. Seeds numerous, minute. A/bumen 
fleshy. Absence of stipules distinguishes this from Rosacea and Cunoni- 
acee. (G. Don.) 
Leaves simple, opposite, exstipulate, deciduous. Flowers in large co- 
rymbs, pink or white, often sterile.—Suffruticose shrubs, natives of North 
America and Asia. Easily propagated by cuttings, and growing freely in any 
soil that is rather moist. 
Genus I. 
alla 
HYDRA’/NGEA L. Tue Hypranega. Lin. Syst. Decandria 
Di-Trigynia. 
Identification. Lin. Gen., 557.3; Dec. Prod., 4. p. 13.; Don’s Mill., 3. p. 232. 
Synonymes. Hydréngea, and Horténsia Juss.; Idrangea, Ital. 
Derivation. From hudér, water, and aggos, a vessel; with reference to some of the species which 
grow in water ; or, as some suppose, from the capsule resembling a cup. 
Gen. Char. Flowers generally deformed ; but some of them hermaphrodite 
and fertile. Calyr tube hemispherical, 10-ribbed, rather truncate, 
adnate to the ovarium; limb permanent, 5-toothed. Petals 5, regular. 
Stumens 10. Styles 2, distinct. Capsule 2-celled, with introflexed valves, 
crowned by the teeth of the calyx and styles, flattish at the top, opening by 
a hole between the styles. Seeds numerous, reticulated. (Don’s Afill.) 
Leaves simple, opposite, exstipulate, deciduous ; serrated or lobed. Flow- 
ers corymbose, pink, or yellowish white; the marginal ones sterile, and 
large, in consequence of the teeth of the calyx being dilated into broad, 
petal-like-coloured segments ; the rest of the sterile flower partially abor- 
tive. — Shrubs, natives of North America and Asia. 
A. Species Natives of North America. 
y 1. H. arpore’scens L. The arborescent Hydrangea. 
Identification, Lin. Sp., p.568.; Don’s Mill., 3. p. 232; Lodd. Cat., ed. 
1836. ; 
Synonymes. H. vulgaris Miche. Fl. Bor. Amer. 1. p. 268.5 H. frutéscens 
Meench Meth. 1. p. 106. 
Engravings. Bot. Mag., t. 437.; and our fig. 899. 
Spec. Char., §c. Leaves ovate, rather cordate ; superior 
ones lanceolate, coarsely toothed, pale and puberulous 
beneath. Corymbs flattish. Flowers nearly ail fertile. 
Flower buds obtuse. Flowers white, small, having an 
agreeable odour. (Don’s Mill.) A low shrub, Penn- go. 1, arborecens. 
