34 1 ARBORETUM AND FRUTICETUM. PART III. 



Varieties. There is a very handsome double- flowered variety, with pale yellow flowers ; and another, 

 called Lee's new double yellow, with dark yellow flowers ; both of which^'are in general cultivation 

 in the nurseries. De Candolle also notices two forms of the species : one with tomentose pubescent 

 branches, and stipules scarcely longer than the footstalks of the leaves ; and another with branches 

 glabrous at the base, but pubescent upwards, and the stipules twice or thrice the length of the 

 petioles of the leaves. 



Spec. Char., eye. Stem suffruticose, procumbent, branched, branches elongated. 

 Leaves scarcely revolute at the margins ; under surface cinereously hoary, 

 upper surface green, pilose, somewhat ciliated ; lower leaves somewhat or- 

 bicular, middle ones ovate-elliptical, upper ones oblong. Stipules oblong- 

 linear, ciliated, longer than the footstalks of the leaves. Racemes loose. 

 Pedicels and calyxes pilose. (Don's Mi//., i. p. 311.) The stamens, if 

 touched during sunshine, spread slowly, and lie down upon the petals. (Smith. > 

 Native of dry and hilly pastures throughout Europe, and common in Bri- 

 tain. It was first recorded under the name of Helianthemum vulgare by 

 Ray, who says that the flowers are very seldom white. Sir J. E. Smith 

 says, " It is a variable species, but less so than authors make it." (Eng. 

 Fl., iii. p. 26.) It is a trailing shrub, flowering from May till September. 

 The double-flowered varieties ought to be in every collection. 



!U 59. H. surreja x num Mi//. The Surrey Helianthemum, or Sun Rose. 



Identification. Mill. Diet, No. 15. ; Swt. Cist., t. 28. ; Don's Mill., 1. p. 311. 



Synonyme. Cistus surrejanus Lin. Sv., 743., Smith's Eng. Bot. 



Engravings. Dill. Eltli., 177. t. 145. f. 174. ; Swt. Cist., t. 28. j Eng. Bot., t. 2207. 



Spec. Char., eye. Stem suffruticose, procumbent. Leaves ovate-oblong, rather 

 pilose. Racemes many-flowered, terminal. Petals narrow, lanceolate, 

 jagged. (Don's Mill., i. p. 311.) Found wild in Surrey, near Croydon. 

 It is a procumbent shrub, with yellow flowers, the petals of which are dis- 

 tinct, and the calyxes pilose. It flowers from July to October. Plants 

 were in the garden of Mrs. Dickson, of Croydon, in Surrey, in 1826. 



*~ 60. H. ova v tum Duncd. The ovate-leaved Helianthemum, or Sun Rose. 



Identification. Dunal ined., Dec. Prod , 1. p. 280. ; Don's Mill, 1. p. 31 1! 

 Synonyme. Cistus ovatus Viv. Frag., 1. p. 6. 

 Engraving. Viv. Frag., 1. 1 8. f. 2. 



Spec. Char., $c. Stem suffruticose, procumbent, much branched. Branches villous. Leaves ellip- 

 tic-lanceolate, tapering into the footstalks, bluntish, silky-villous on both surfaces, ciliated. Sti- 

 pules somewhat longer than the footstalks of the leaves, villously ciliated. Peduncles 1 — 3- 

 flowered, terminal. Calyxes rather villous. {Don's Mill., i. p. 311.) A trailing plant, from the 

 mountains between Viterbo and Ronciglione, and in the Alps about Geneva. Introduced in 1818, 

 and producing its yellow flowers from June to August. . 



fU 61. H. grandiflo v rum Dec. The large-flowered Helianthemum, or Sun 



Rose. 



Identification. Dec. Fl. Fr., 4. p. 821. ; Don's Mill., 1. p 311. 

 Synonyme. Cistus grandiflorus Scop. Cam., ed. 2. No. 648. t. 25. 

 Engravings. Swt. Cist., t. 69. ; Scop. Cam., ed. 2. t. 25. ; and our fig. 73. 



Spec. Char., Syc. Stem suffruticose, ascending. Branches 

 hairy. Upper leaves flattish, oblong, rather pilose ; upper 

 surface green, under surface sometimes pale cinereous. Sti- 

 pules ciliated, rather longer than the footstalks of the leaves. 

 Flowers large. Calyxes rather hairy. (Don's Mill., i. p. 3 1 1 . ) 

 A native of the Pyrenees, from which it was introduced in 

 1800. It bears a close resemblance to H. vulgare, but is 

 larger in all its parts ; and its flowers, which appear from 

 June to August, are considerably larger, and of a paler 

 colour. It is quite as hardy as the indigenous sorts. Plants 

 of it were in the Fulham Nursery in 1828. 



!U 62. H. obscu'rum Pers. The obscure Helianthemum, or Sun Rose. 



Identification. Pers. Syn., 2. p. 79. ; Don's Mill., 1. p. 311. 



Synonyme. H. obscilrum a. Dec. Flor. Fr., 6. p. 624. 



Spec. Char., fyc. Stem suffruticose, ascendent, much branched. Branches hairy. Leaves elliptical, 

 hairy on both surfaces, greenish ; upper ones elliptic. Stipules ciliated, longer than the footstalks. 

 Racemes long. Calyxes hairy. (Don's Mill., i. p. 311.) A native of Europe, in woods and dry 

 wastes, and introduced into British gardens in 1816. It is hardly procumbent, forming a small 

 roundish bush, about 1 ft. in height, and producing its pale yellow flowers, which are rather small 

 from May to August. 



