326 ARBORETUM AND PHUTICETUM. PAKI III. 



ill Spain and Portugal, and introduced inio England in 165G. It is erect, and not much branched ; 

 tjuite hardy, or requiring only very slight protection in very severe froit. Duinont thinks it pro- 

 bable that it is only a variety of C /.tdon. 



tt 27. ('. OKLONGiFo^Lius Sti'f. Tlic oblong-lcaved Cistus, o;- Rock Rose. 



Identification. Swt. Cist, t. 87. ; Don's Mill., 1. p. 300. 

 Engraving. Swt. Cist., t. 67. 



Spec. Char., ^-c. Erect. Branches hispid, villous. Leaves on short foot- 

 stalks, oblong-lanceolate, obtuse, pubescent, and waved at the margins; 

 under surface veiny. Peduncles cymose. Petals concave, imbricated. 

 (Don's Mill., i. p. 300.) A native of Spain, attaining the height of 4- ft., and 

 producing its white flowers in June and July. When it was introduced into 

 England is uncertain ; but Sweet found plants which appeared to him to 

 be of this species in Colvill's Nursery in 1826. It forms a strong hand- 

 some evergreen shrub, which is quite hardy, and of the easiest culture. 



a. 28. C. ASPERiFO^Lius Swt. The rough-leaved Cistus, or Rock Rose. 



Identification. Swt. Cist., t. 87. Don's Mill., 1. p. 300. 

 Engravi7ig. Swt. Cist., t. 87. 



Spec. Char., t^c. Leaves almost sessile, ovate-lanceolate, acute, 3-nerved, 

 wrinkled, smoothish, with wavy margins, somewhat denticulated, ciliated, 

 netted with veins beneath, with the nerves and veins rough. Flowers 

 cymose. Peduncles and caly.xes hairy. Petals imbricate. {Don's Mill., i. 

 p. 300.) A shrub growing to the height of 2 ft., and producing its large 

 white flowers from May to August. Its native country is uncertain ; and 

 Sweet says it may probably be a garden production, and, if so, intermediate 

 between C. laxus and C. oblongifolius. It forms a handsome, strong, up- 

 right, evergreen shrub, and is quite hardy, producing its flowers all the sum- 

 mer, and till late in autumn, in the open border. There were plants of it in 

 Colvill's Nursery in 1826. 



o- 29. C. psilose'palus Swt. The glabrous-sepaled Cistus, or Rock Rose, 



Identification. Swt. Cist, t 33. ; Don's Mill., 1. p. 300. 

 Engraving. Swt. Cist., t. 33. 



Spec. Char., Sfc. Leaves on short footstalks, oblong-lanceolate, 3-nerved, acute, 

 with undulated margins, which are somewhat denticulated and ciliated, rather 

 hairy. Flowers somewhat cymose. Peduncles hairy, tomentose. Sepals 

 with long points, glabrous, shining, and with ciliated edges. Petals broad, 

 cuneated, imbricated. (Don's Mill., i. p. 300.) A shrub growing from 2 ft. to 

 3 ft. high, with white flowers in July and August. Apparently a garden 

 production. Plants of it were in the Hammersmith Nursery in 1826. 

 It approaches near to C. longifolius, but is very different, according to 

 Sweet, fi'om that species. The plants are bushy, and the shoots are ter- 

 minated by large cymes of white flowers, which open in succession, and 

 produce a contrast with the dark green leaves with which the plants are 

 clothed. 



b. Peduncles tuith small, concave, coriaceous, yelloivish, decussate, caducous Brac- 

 Icoles at the Base ; and tvith two larger opjjosite ones hencath the Middle. 



tL 30. C. LONGiFO^Lius Lam. The long-leaved Cistus, or Rock Rose 



Identification. Lam. Diet, 2. p. 16.; Don's Mill., 1. p. .300. 



Si/Honymes. Cfstus nigricans Pourr. Act. Tout., 3. p. 311. ; f. populifblius var. longifblius Dj/oto/i/. 



Spec. Char., S(r. I-eaves on short peduncles, oblong-lanceolate, with waved and pubescent margins ; 

 under surface veiny. Pcdunclescymo.se. {Don's Mill., i. p. 300.) A shrub growing to the height 

 of 4 ft, and producing its white flowers in July and August It does not appear to have been 

 introduced into England. Duraont de Courset, in his Botaniste Cultivutcur, says that this .<pccies 

 is only a variety of C. /lopulifblius; seeds of the latter having, with him, produced the former. 



« 31. C. POPULiFO'Lius L. The Poplar-leaveJ Cistus, or Rock Rose. 



ilification. Lin. Sp., 736. ; Don's Mill., ]. p. 300. 



mymes. Cistei Feuilles de Peuplier, Fr. ; Pappel.bKittrige Cisten Rose, Ger. 



"■'.'/• 



n C. p. 2 niinor Dec. Prod., 1. p. 266.— Peduncles and calyx smoothish, shining, clammy, /.edon 

 Jatifdiium, ii., Clus. Hist., i. p. 78. ; C'islus /Jopulilblius Cav. Icon., 3. C15., Swt. Ost., 23. 



