322 ARBORETUM AND FRUTICETUM. PART III. 



July and August. It is one of the most desirable species of the genus, 

 being quite hardy, having flowers of the largest size, and thriving in almost 

 any soil or situation not too moist. Cuttings put in in autumn are soon 

 rooted, and the plant ripens seeds plentifully in ordinary seasons. 



a. 11. C. CANDIDI'SSIMUS Dun. The whitest-leaved Cistus, or Rock Rose, 



Identification. Dun. ined. Dec. Prod., 1. p. 264. ; Swt. Cist, 3. ; Don's Mill., 1. p. 299. 

 Engravings. Swt. Cist., t. 3. 



Spec. Char., $c. Leaves ovate-elliptical, acute, densely clothed with hoary 

 tomentum, 3-nerved; footstalks short and sheathing at the base, with 

 pilose margins. Peduncles solitary, 1-flowered, shorter than the leaves. 

 Outer sepals one half shorter than the rest. (Don's Mill., 1. p. 299.) Native 

 of the Grand Canary Island, in elevated pine forests. This is a noble species, 

 growing to the height of 4- ft. and upwards, with fine poplar-like leaves, and 

 large pale rose-coloured flowers, with distinct petals, which appear in July 

 and August. It was introduced into the Botanic Garden at Chelsea in 

 1815, where it flowered soon afterwards, and plants existed there in 1825. 

 It forms a shrub, not sufficiently hardy to stand through the winter, about 

 London, in the open air, as a bush ; but, with dry litter laid about its roots, 

 and a slight covering of mats in the most severe weather, it may be pre- 

 served. 

 . 12. C. VAGINA V TUS Ait. The sheathed-petioled Cistus, or Rock Rose. 



Identification. Hort. Kew., 3. p. 304. ; Jacq. Hort. Sch., 3. p. 17. ; Swt. Cist/t. 9. ; Don's Mill., 1. p. 299. 

 Synonymes. Cistus symphytifblius Lam. ; Ciste a Feuilles de Consoude, Fr. ; scheidenartige Cisten 



Rose, Ger. 

 Engravings. Jacq. Hort Sch., 3. p. 17. t. 282. ; Bot. Reg., t. 225. ; Swt. Cist., t. 9. 



Spec. Char.> fyc. Leaves lanceolate, acute, 3-nerved, hairy, under surface re- 

 ticulated; footstalks furrowed, dilated, and sheathing at the base, with 

 pilose margins. Peduncles 3-flowered, axillary or terminal, long, bracteate 

 at the base. (Don's Mill., i. p. 299.) Native of the Island of Teneriffe. In- 

 troduced in 1779. A splendid-flowered species, easily distinguished by 

 its panicled flowers, and large, imbricate, obcordate, crumpled petals. It 

 grows to the height of 4 ft. ; and, being rather tender, it is generally kept in 

 green-houses or pits. Its flowers are light rose colour, darker without and 

 pale within : their general appearance is that of an apple blossom on a large 

 scale ; and they continue appearing from April to June. Plants were in 

 the Kensington Nursery in 1826. 



M. 13. C. SERI'CEUS VahL The silky-leaved Cistus, or Rock Rose. 



Identification. Vahl. Symb., 1. p. 37. ; Don's Mill., 1. p. 299. 



Engravings. Barrel. Icon., 1315. 



Spec Char, &c Leaves ovate, tomentose, 3-nerved lower ones on footstalks, upper ones sessile. 

 Peduncles hairy. (Don's Mill., i. p. 299.) Native of Spain, producing its purple flowers in June 

 and July. It was in cultivation in 1826 ; and is said to grow to the height of 3 ft. 



*. 14. C. HY'BRIDUS Vahl. The hybrid Cistus, or Rock Rose. 



Identification. Vahl. Symb., 1. p. 37. ; Don's Mill., 1. p. 299. 



Spec. Char., Sgc. Leaves ovate, hoary, on footstalks. Branches beset with yellow scales. Peduncles 

 elongated, subracemose, hairy. Outer sepals caducous. (Don's Mill., i. p. 299.) Native of Spain, 

 where it produces its purple flowers in June and July. It is said to grow to the height of 3 ft., but 

 has not yet been brought to Britain. 



B. Peduncles cymose. Style almost wanting. Stigma capitate, shorter than the 



Stamens. 

 - 15. C. CYMO V SUS Dun. The cymose-Jlowcred Cistus, or Rock Rose. 



Identification. Dun. ined. Dec. Prod., i. p. 265. ; Don's Mill., 1. p. 299. 

 Synonymes. Cistus incanus Sib. Fl. Gr., and at one time in the garden of Cels. 

 Engravings. Fl. Gr., t. 494., as C. incanus ; Swt Cist, t. 90. 



Spec. Char.y $c. Leaves broad-ovate, twisted at the top, acutish ; under 

 surface wrinkled and hoary. Footstalks dilated at the base, and somewhat 

 sheathing, furrowed above. Peduncles cymose, 5- or 10-flowered, hoary, 

 axillary, or terminal. (Don's Mill., i. p. 299.) A very handsome, small, 

 bushy shrub, growing in British gardens to the height of 3 ft. It is a native 

 of the Levant, and has been some years in cultivation in British gardens ; 

 but how long is uncertain. Sweet says it is often mistaken for C. incanus, 



