592 ARBORETUM ET FRUTICETUM BR1TANNICUM. 



*~ 17. R. CHAMJECI'STUS L. The Ground-Cistus Rhododendron. 



Identification. Lin. Sp., 562. ; Don's Mill., 3. p. 854. 



Engravings. Bot. Mag., t. 488. ; Bot. Cab., t. 1401. ; and our Jig. 1119. 



Spec. Char., fyc. Leaves oblong-lanceolate, attenuated at both ends, stimsh, glau- 

 dularly ciliated. Peduncles usually 

 twin, and, as well as the calyxes, 

 beset with glandular hairs. Corollas 

 rotate, pale purple. (Don's Mill.) 

 A dwarf tufted evergreen shrub, with 

 small leaves, about the size of those 

 of a species of Helianthemum. Alps 

 of Austria, Carniola, Mount Baldo, 

 and near Salzburg ; and in Eastern 

 Siberia. Height 6 in. Introd. 1786. 

 Flowers purple ; May and June. 



vi. Pentanthera D. Don. 



Synonyms. Az&lea L. 



Derivation. From pente, five, and anthera, an anther ; flowers pentandrous. 



Sect. Char. Limb of calyx short, 5-lobed. Corolla funnel-shaped. Sta- 

 mens 5. Ovarium 5-celled. Leaves deciduous. This group includes the 

 hardy azaleas of the gardens, which have mostly deciduous leaves, and are 

 quite distinct in their appearance from the plants of the preceding groups of 

 this genus, which are all evergreen and sub-evergreen. After Mr. Don's name, 

 we have given the name previously applied, and then the common English 

 name, leaving them to be adopted by the practical gardener, if he should 

 think fit. At the same time, those who prefer following Mr. Don have onl) 

 to pass over the names which we have put in parenthesis. 

 & 18. R. FLA'VUM G. Don. (AZALEA PO'NTICA L.) The Pontic, or common, 



Azalea. 



Identification. Don's Mill., 3. p. 847. 



Synonymes. Azalea pontica Lin. Sp. 1669. ; Azalea arbbrea Lin. Sp ed 1 D 150 



Engravings. Bot. Mag., t. 2.383. ; and our Jig. 1120. 



Spec. Char., fyc. Flowers leafy, clammy. Leaves 

 ovate oblong, pilose, ciliated. Corolla funnel- 

 shaped. Stamens very long. (Don's Mill.) A 

 deciduous shrub. Levant, Pontus, Caucasus, 

 Asiatic Turkey, &c. Height 4 ft. to 6 ft. 

 Introduced in 1793. Flowers yellow ; May 

 and June. 



Varieties and Hybrids. There are a great number 

 of varieties of this species in the gardens, dif- 

 fering principally in the colour of their flowers, 

 and the hue of the leaves. The flowers of the 

 species are of a fine bright yellow ; but those 

 of the varieties are of all shades, from yellow 

 to copper, or orange colour ; and they are some- 

 times of a pure white, or of white striped with yellow and red. Besides, 

 as this species seeds freely, and is easily cross-fecundated with the North 

 American species, an immense number of varieties of it have been origin- 

 ated in British and Continental gardens. The varieties and hybrids which 

 are considered as belonging to Azalea pontica, which are given in Loddiges's 

 Catalogue for 1836, are the following, but new kinds are originated everv 

 year, and we therefore refer to the yearly catalogues of nurserymen. 



A. p. 2 alba. 4 crocata. 6 flammea. 8 glafica. 10 ochrole&ca. 12 tricolor. 



3 aurantia. 5 ctiprea. 7 ftilgens. 9 ignescens. 11 pallida. 



j* 19. R. NUDIFLO'RUM Torr. ( AZA'LEA NUDIFLO'RA /,.) The naked-flowered Azalea. 



Identification. Torr. Fl. Un. St., 1. p. 140. ; Don's Mill., 3. p. 847. 



