CHAP. XI. CISTA^CEM. HELI a'nTHEMUM. 337 



Spec. Char.) $c. Stem ascendent. Leaves stipulate, setaceous, glaucous, 

 smoothish. Buds leafy, axillary. Stipules long, filiform. Peduncles long, 

 disposed in secund racemes. Pedicels glabrous, and bracteate at the base. 

 Calyxes hairy. (Don's Mill., i. p. 307.) A native of the south of Provence, 

 Spain, and Ualmatia, on rocks exposed to the sun, where it forms an under- 

 shrub H ft. in height, and produces its yellow flowers from June to August. 

 It is an elegant little plant, but rather tender during winter. Plants of it 

 were in Mr. Colvill's Nursery in 1825. 



C. Leaves ojiposite and alternate, furnished with Stipules. 



u. 27. H. Lj£ v ve Pers. The 6mooth Helianthemum, or Sun Rose. 



Identification. Pers. Ench., 2. p. 78. ; Don's Mill., 1. p. 307. 



Synonymes. Cistus lse^vis Cav. Icon., 2. p. 35. t. 145. f. 1. 



Engravings. Cav. Icon., 2. t. 145. f. 1. 



Spec. Char.,8fc. Stem erectish, glabrous, branched. Branches erect. Leaves linear, sessile, glabrous, 

 with revolute margins, keeled, opposite ; upper ones alternate, stipulate. Stipules long, awl-6haped. 

 Peduncles solitary, 1-flowered, subterminal. Calyxes smooth. (Don's Mill., i. p. 307.) Found 

 wild on the hills of Spain, and raised in England from seeds sent to the Chelsea Botanic Garden 

 in 1826. It grows 1 ft. high, and produces its yellow flowers in June and July. 



it. 28. H. vi'ride Tenore. The green-leaved Helianthemum, or Sun Rose. 



Identification. Tenor. Prod. Fl. Neap., p. 31. ; Don's Mill., 1. p. 508. 



Spec. Char., 8;c. Stem ascendent, glabrous. Leaves opposite, linear, with revolute margins, glabrous, 

 green, somewhat mucronate, stipulate. Stipules awl-shaped, much smaller than the leaves. Pe- 

 duncles racemose, beset with clammy hairs, as well as the calyx. (Don's Mill., i. p. 308.) Introduced 

 from Sicily in 1825, where it is a shrub 1 ft. in height, producing yellow flowers in June and July. 



«. 29. H. junipe'rinum Lag. The Juniper-like Helianthemum, or 



Sun Rose. 



Identification. Lag. in. Litt., and Dec. Prod., 1. p. 275. ; Don's Mill., 1. p. 308. 



Synonymes. Cistus laj'vipes Durand, Gouan Fl. Monsp., 263.?; Cistus mauritanicus Thib.ined., 

 Barrel. Icon., t. 443. 



Engraving. Barrel. Icon., t. 443. 



Spec. Char. §c. Stem ascendent, branched. Leaves linear awl-shaped, ciliated, mucronate, flat, 

 with rather revolute margins, opposite; upper leaves alternate. Stipules awl-shaped, upper ones 

 longest. Peduncles racemose, and are, as well as the calyxes, clothed with clammy hairs. {Dofi's 

 Mill., i. p. 308.) A shrub 1 ft. in height, introduced from the south of Europe in 1800, and pro- 

 ducing its yellow flowers from June to August. 



a. 30. H. Barrelie x rz Tenore. Barrelier's Helianthemum, or Sun Rose. 



Identification. Tenor. Prod. Fl. Neap, p. 31. ; Don's Mill., 1. p. 308. 



Engravings. Barrel. Icon, rar., 416. ; Bot. Mag., t. 2371. 



Spec. Char., %c. Stem erect. Branches villously pubescent. Leaves linear-oblong, narrowed at the 

 base, pubescent, with revolute and ciliated margins, opposite; upper leaves alternate. Stipules 

 linear awl-shaped, mucronate, erect. Peduncles racemose, few-flowered, and are, as well as the 

 calyxes, beset with clammy hairs. {Don's Mill., i. p. 308.) Found wild in Italy and Spain, where 

 it grows 1 ft. high. It was introduced in 1820, and produces yellow flowers from June to August. 

 It is rather tender. 



il. 31. H. thymifo^lium Pers. The Thyme-leaved Helianthemum, or Sun Rose. 



Identification. Pers. Ench., 2. p. 79. ; Don's Mill, 1. p. 308. 



Synonymes. Cistus ^hymifdlius Lin. Sp., 713., Smith's Fl. Graze, t. 500., Barrel. Icon, rar., t. 444. ; 



H.*glutin6sum (3, Fl. Ft: 4. p. 821. 

 Engravings. S.vt. Cist., t. 102. ; Sm. Fl. Gr., t. 500. ; Barrel. Icon, rar., t. 444. ; Fl. Fr„ 4. p. 821., 



under H. glutinbsum (3. 



Spec. Char., cfc. Stems procumbent. Branches pubescent. Leaves almost 

 linear, very short, pubescent, opposite, upper ones alternate. Stipules 

 mucronate, erect. Peduncles few-flowered, clothed with clammy hairs. 

 (Don's Mill., i. p. 308.) A native of Spain, which has been in cultivation 

 in British gardens since 1658. It is a pretty little dwarf thyme-looking 

 plant, and produces abundance of small bright yellow flowers from June to 

 August ; and it often ripens seeds. It is one of the most desirable of the 

 Cistaceae for being kept in pots. 



a. 32. H. glutino v stjm Pers. The clammy Helianthemum, or Sun Rose. 



Identification. Pers. Ench., 2. p. 79. ; Don's Mill., 1. p. 308. 



Synonyme. Cistus glutindsus Lin. Mant., 246. 



Engravings. Swt. Cist., t. 83. ; Barrel. Icon, rar., 512. t. 415. ? ; Cav. Icon., 2. t. 145. f. 2. 



Spec. Char., Sec. Stem ascendent. Branches clothed with clammy hairs, 

 somewhat cinereous. Leaves almost linear, with revolute margins, villous, 



R B 2 



