994 ARBORETUM AND FRUTICETUM. PART III. 



E.jloribunda H. B. et Kunth is a native of New Granada, on the Andes, 

 with white flowers, and shining leaves, which are clammy when young. The 

 plant of this name, in the British gardens, appears to be only a variety of the 

 preceding species. 



* E. resinosa Pers., Stereoxylon resinosum Ruiz et Pav., is a glabrous 

 shrub, a native of Peru, on the cold parts of hills. A plant of this species has 

 stood against a south wall, in the Kew Gardens, since 1832. 



* E. pulverulenta Pers., Stereoxylon pulverulentum Ruiz et Pav., is a 

 shrub, hairy in 'every part, with white flowers ; growing to the height of 8 ft. or 

 10 ft. It is a native of Chili ; and plants of it have been in the Horticultural 

 Society's Garden since 1831. 



Twenty othei' species are described in Don's Miller. y iii. p. 193. top. 195., all 

 natives of South America, and probably as hardy as those above mentioned ; 

 but it does not appear that any of them have been introduced. 



CHAP. LV1I. 



OF THE HARDY AND HALF-HARDY LIGNEOUS PLANTS OF THE 

 ORDER SAXIFRA'GE^E, TRIBE HYDRA'NGE^E. 



THE only woody plants contained in this order are included in the tribe 

 Hydrangea?, which contains the well-known green-house, or rather cold- 

 frame, plant, Hydrangea HortenszVz, that may be considered as half-hardy ; and 

 some species, natives of North America, which are quite hardy. There are 

 also some half-hardy species, natives of Asia. They are all easily propagated 

 by cuttings, and will grow freely in any soil that is rather moist. 



GENUS I. 



HYDRA'NGEA L. THE HYDRANGEA. Lin. Syst. Decandria 

 Di-Trigynia. 



Identification. Lin. Gen., 557. ; Dec. Prod., 4. p. 13. ; Don's Mill, 5. p. 232. 

 St/nonymes. Hydrangea, and Hort^nsm Juss. 



Derivation. From hudor, 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 hermaphro- 

 dite and fertile. Tube of calyx hemispherical, 10-ribbed, rather trun- 

 cate, adnate to the ovarium; limb permanent, 5-toothed. Petals 5, 

 regular. Stamens 10. Styles 2, distinct. Capsule 2-celled, with intro- 

 flexed 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 Mill., iii. p. 232.) Shrubs, with opposite leaves. Flowers corym- 

 bose, pink, or yellowish white ; the marginal ones sterile, and large, in con- 

 sequence of the teeth of the calyx being dilated into broad, petal-like- 

 co!oure4 segments ; the rest of the sterile flower having the other parts 

 partially abortive. 



A. Species Natives of North America. 

 A 1. H. ARBORE'SCENS L. The arborescent Hydrangea. 



Identification. Lin. S P ., p. 568. ; Don's Mill., 3. p. 232. ; Lodd. Cat., ed. 1836. 

 Engraving. Our fig. 748. 



Spec. Char., $c. Leaves ovate, rather cordate ; superior ones lanceolate, 

 coarsely toothed, pale and puberulous beneath. Corymbs flattish. Flowers 



