330 ARBORETUM AND FHUTICETUM. PART 111. 



Varieties. 

 n. H. u. 2 erectum Dec. (Swt. Cist., 5.), C'istus umbellatus .Law., C'istus 



verticillatus Brot. y has the stem erect, and the leaves on the under 



surface clothed with greenish tomentum. 

 . //. u. 3 subdecumbens Dec., C'istus umbellatus var. a Lam., has the stem 



somewhat decumbent. Leaves somewhat ciliated, and clothed with 



white tomentum on the under surface. 



M. 3. H. OCYMOI V DES Pers. The Basil-like Helianthemum, or Sun Rose. 



Identification. Pers. Syn., 2. p. 7P. ; Don's Mill, 1. p. 302. 



Synoiii/mcs. fistus ocymoldes Lam. Diet., 2. p. 18. ; C'istus sampsucifblius Cav. Icon., 1. p. 65. 



t. y6. 



Engraving. Clus. Hist., 1. p. 72. ic. 



Varieties. Two are mentioned by De Candolle ; one of them with the peduncles glabrous, and the 

 other with the branches and peduncles rather hairy. 



Spec. Char., #c. Erect, branched. Branches hoary. Cauline leaves obovate, 

 or ovate-oblong, 3-nerved, almost sessile, green ; those of the branches are 

 stalked, and keeled on the back, reflexed at the top, hoary on both surfaces. 

 Peduncles long, branched, paniculate. Pedicels opposite, somewhat um- 

 bellate. Calyx of 3 much-pointed sepals. (Don's Mill., i. p. 302.) A shrub 

 growing to the height of 3 ft., a native of Spain and Portugal ; but when 

 introduced into England is uncertain. According to Sweet, this species is 

 very often confused in the collections with H. algarvense, though it is very 

 different. It is a very handsome undershrub, and, being rather tender, re- 

 quires the protection of a wall, or a covering of mats during severe frosty 

 weather. 



B. Style almost none. Stigma large. 

 . 4. H. ^LYSSOI V DES Vent. The Alyssum-like Helianthemum, or Sun Rose. 



J.Icntification. Vent. Choix., t. 20. ; Lam. Diet., 2. p. 20. ; Dec. Fl. Fr., 4. p. 818. ; Don's Mill., i. 

 p. Sltt. 



Si/nomjmes. C'istus alysstiides a. Lam. Diet., 2. p. 20., Dec. Fl. Fr., 4. p. 818., Dora's Mill, 1. p. 302. 



Engraving. Vent. Choix., t. 20. 



Spec. Char., &c. Erect, much branched, diffuse, spreading. Branches hoary, tomentosely hairy at 

 the top. Leaves sessile, tapering towards the base, oblong-ovate, bluntish, covered with short 

 hairs ; younger ones rather hoary, adult ones green. Peduncles terminal, solitary, or umbellate, 

 1 2-flowered, longer than the leaves. Calyx 3-sepaled, acuminated, hairy. (Don's Mill., i. p. 302.) 

 A shrub, native of Spain and the west of France, growing to the height of 3 ft, and producing its 

 yellow flowers from June to August. It is remarked of the flower-buds, that they are of an in- 

 tense purple colour at the apex. It does not appear to be in cultivation in British gardens. 



n. 5. H. RUGO'SUM Dun. The \vrink\ed-Ieaved Helianthemum, or Sun Rose. 



Identification. Dunal. ined. Dec. Prod., 1. p. 268. ; Swt. C ; .st, t. 65. ; Don's Mill., 1. p 302. 

 Engraving. Swt. Cist, t 65. 



Spec. Char. y fyc. Erect. Branches rather hairy, clothed with leprous tomen- 

 tum, scabrous, of a brownish grey colour. Leaves sessile, tapering into 

 the footstalks at the base, obovate-oblong, bluntish, rather oblique, with the 

 margins somewhat denticulated, and a little curled, tomentose on both 

 surfaces, wrinkled, under surface hoary. Peduncles terminal, axillary, or 

 umbellate, 1 3-flowered, hairy, shorter than the leaves. (Don's Mill., \. 

 p. 302.) A shrub 3ft. high, a native of Spain, introduced in 1800, and 

 producing its fine yellow flowers from June to August. Its stem is shrubby, 

 erect, or a little flexuose; the branches spreading, more or less hairy; the 

 young shoots reddish; and the flowers terminal, with broadly ovate petals of 

 a golden yellow, each with a large dark spot near the base. It is dis- 

 tinguished from all other sorts by the stiff bristle-like purple hairs of its 

 calyx. It is rather tender, but it will amply repay protection, either against 

 a wall or in a pit. Plants were in the Bristol Nursery in 1827. 



fe- 6. H. MICRO PHY'LLOI Swt. The small-leaved Helianthemum, or Sun Rose. 



liirnlijication. Swt. Cist., t 96. ; Don's Mill., 1. p. 302. 



Sijn-.nHinies. H. rugbiiim /3 microphf Hum Dec. Prod., 1. p. 268. : H. nlyssoides ft microphyllum 

 Dec. Fl. />. tiuppl., p. 622. 



