t 
326 ARBORETUM AND FRUTICETUM. PARI Ill. 
in Spain and Portugal, and introduced into England in 1656. It is erect, and not much branched ; 
quite hardy, or requiring only very slight protection in very severe frost. Dumont thinks it pro- 
bable that it is only a variety of C. Lédon. 
# 27. C. oBLONGIFO‘LIUS Swit. The oblong-leaved Cistus, or 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 4ft., 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. 
# 28. C. ASPERIFO‘LIUS Swt. The rough-leaved Cistus, or Rock Rose. 
Identification. Swt. Cist., t. 87. Don's Mill., 1. p. 300. 
Engraving. Swt. Cist., t. 87. 
Spec. Char., §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 calyxes hairy. Petals imbricate. (Don’s Mill., i. 
p. 300.) A shrub growing to the height of 2ft., 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. 
# 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., &c. 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, from that species. The piants 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 with small, concave, coriaceous, yellowish, decussate, caducous Brac- 
 teoles at the Base ; and with two larger opposite ones beneath the Middle. 
2.30. C. LONGIFO‘LIUs Lam. The long-leaved Cistus, or Rock Rose. 
Identification. Lam. Dict., 2. p. 16.; Don’s Mill., 1. p. 300. 
Synonymes. Cistus nigricans Pourr. Act. Toul., 3. p. 311.; C. populifolius var. longifdlius Dumont. 
Spec. Char, &c. Leaves on short peduncles, oblong-lanceolate, with waved and pubescent margins ; 
under surface veiny. Peduncles cymose. (Don’s Miil., 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. Dumont de Courset, in his Botaniste Cultivateur, says that this species 
is only a variety of C. populifdlius; seeds of the latter having, with him, produced the former, 
# 31. C. poputiro'Lius L. The Poplar-leaved Cistus, or Rock Rose. | 
Identification. Lin. Sp., 736. ; Don’s Mill., 1. p. 300. 
Synonymes. Ciste a Feuilles de Peuplier, Fr. ; Pappel-blittrige Cisten Rose, Ger. 
Variety. 
 C. p. 2 minor Dec. Prod., 1. p. 266.—Peduncles and calyx smoothish, shining, clammy. Lédon 
latifoliumy ii., Clus. Hiést., i, p. 78.; Cistus populifdlius Cav. Icon., 3. 215,, Swt. Cist., 23. 
