CHAP. XI. C'ISTA V CEJE. HELIa'nTHEMUM. 347 



Spec. Char. t §c. Stem suffrutioose, branched. Branches erectish. Leaves 

 linear or linear-oblong, hoary on both surfaces, and bristly at the apex. 

 Stipules awl-shaped. Calyxes rather pilose, nervously striated. (Don's 

 Mill., i. p. 312.) A native of Spain and the south of France, and in cul- 

 tivation since 1731 ; producing its white flowers from May to July. Ac- 

 cording to Sweet, it is nearly related to H. lineare, and also to H. apenninum : 

 but it differs from the former in having whiter leaves, and being more hairy ; 

 and from both, by its imbricate paper-white petals. Plants of it were in the 

 Fulham Nursery in 1826. 



*~. 74. H. linea v re Pers. The Yinem-leaved Helianthemum, or Sun Rose. 



Identification. Pers. Encli., 2. p. 78. ; Don's Mill., 1. p. 312. 



Synonymes. Cistus linearis Cav. Icon., 3. p. 8. ; Cistus pil&sus Dec. Fl. Fr., 5. p. 823. ? 



Engraving. Swt. Cist., t. 48. 



Spec. Char., $c. Stem suffruticose. Branches elongated, ascendent, rather 

 hoary, tomentose. Leaves linear, greenish hoary, with revolute margins. 

 Stipules linear awl-shaped. Racemes loose, twiggy, few-flowered. Calyxes 

 striated, glabrous, with the nerves somewhat violaceous. Sepals acute. 

 (Don's Mill., i. p. 312.) A native of Spain and the south of France; in 

 cultivation since 1817; and producing white flowers from June to August. 

 It requires a little protection during winter. 



«- 75. H. virga v tum Pers. The twiggy Helianthemum, or Sun Rose. 



Identification. Pers. Ench., p. 79. ; Don's Mill., 1. p. 313. 



Varieties. De Candolle mentions two forms of this species : H .v. albifibrum, in which the petals are 

 white; and H. v. tbseum, in which they are pale rose-coloured. 



Spec. Char., fyc. Stem suffruticose, with twiggy, hoary, ascending or erect 

 branches. Leaves linear, hoary on the under surface, with revolute mar- 

 gins. Stipules linear awl-shaped. Calyxes hoary, powdery, pubescent. 

 (Don's Mill., i. p. 313.) A native of Barbary, and in cultivation since 1818. 

 The flowers are of a pale rose colour, large in proportion to the leaves, and 

 the petals have yellow spots at the base. The flowers appear from May to 

 August. This is one of the most beautiful species of the section to which 

 it belongs : it requires a little protection during winter, but grows and 

 flowers freely during summer, and also ripens seeds. Plants of it were in 

 the Epsom Nursery in 1828. 



fu 76. H. apenni v num Dec. The Apennine Helianthemum, or Sun Rose. 



Identification. Dec. FI. Fr., 4. p. 824; Don's Mill., 1. p. 313. 



Synonymes. Cistus apennlnus Lin. Sp., 744.?, Dill. Elth., 170. ; Cistus hispidus /3 Lam. Diet., 2. 



p. 26. 

 Engraving. Swt. Cist., t. 62. 

 Varieties. De Candolle records two forms of this species ; one with leaves broad and flattish, andt 



other with leaves linear and narrow. 



Spec. Char., Sfc. Stem suffruticose, branched. Branches spreading, hoary 

 tomentose. Leaves stalked, oblong linear, with the margins scarcely revo- 

 lute ; under surface tomentose, upper surface glaucescent, but at length 

 becoming smooth. Stipules awl-shaped, longer than the footstalks of the 

 leaves. Calyxes covered with very short hairs, striated, cinereously glaucous, 

 bluntish. (Don's Mill., i. p. 313.) A native of Spain, France, Italy, and 

 Germany, on dry hills and places exposed to the sun ; and in cultivation in 

 British gardens since 1731. The flowers are white, and the petals are 

 distinct, and marked with 3'ellow at their base. The plant is as hardy as 

 the common species. It was in the Chelsea Botanic Garden in 1828. 



«_ 77. H. iii'spidum Dunal. The hlspid-hcrbaged Helianthemum, or Sun Rose. 



Identification. Dunal ined., and Dec. Prod., 1. p. 282. ; Don's Mill., 1. p. 313. 



Synonymes. Cistus hispidus Lam., 2. p. 26. ; Brot. Fl. Lus., 2. p. 271. ; Cistus pilosus /3 Gouan. Fl. 

 Monsp., p. 265. ; H. majorancEfbMum /3 Dec. Fl. Fr. Suppl., p. 625. 



Spec. Char., S;c. Stem suffruticose, branched. Branches ascending, hoary-tomentosc. Leaves 

 stalked, oblong, bluntish, somewhat mucronate, with revolute margins ; under surface hoary, upper 

 surface roughish, greenish-glaucous. Calyxes covered with long hairs. ( Don's Mill., i. p. 313.) 

 Native of the south of France, and in cultivation since 1816; producing its white flowers from 

 May to July. 



