Cistinece HeliantJiemum. 



genus it is sometimes referred. Leaves ovate-lanceolate, sessile, 

 very hairy. Flowers bright yellow wih a brown* blotch at the 

 base of each petal. A Summer-flowering plant from Portugal. 



2. H. vulgare, Kock Eose. This is the common native 

 species, frequently seen in gardens, and one of the most widely 

 distributed, being found from Arctic Europe to both shores of 

 the Mediterranean. A dwarf shrub with opposite linear-oblong 

 hairy leaves and usually yellow flowers, but varying in dif- 

 ferent shades to deep red. There is also a double-flowered 

 variety. H. crbceum, roseum, surrejanum, grandiflorum, etc., 

 are simply varieties of this species. 



There are numerous other species, few of which are seen in 

 cultivation ; but we might mention H. pulverulentum and 

 H. macrdnthum, with white flowers ; H. formosum and //. 

 Tuberaria, an herbaceous species with ribbed leaves and yellow 

 flowers with a purple blotch at the base of each petal. 



2. ClSTUS. 



Mostly handsome erect shrubs from Western and Southern 

 Europe, North Africa, and the Atlantic islands. Leaves oppo- 

 site, entire or toothed, ob- 

 long or lanceolate. Flowers 

 large and showy, but very 

 evanescent, and not opening 

 in dull weather. Sepals 3 to 

 5. Petals white with a yel- 

 low or purple blotch at the 

 base, or rose with a yellow 

 spot at the base, never 

 wholly yellow. Technically 

 distinguished from Helidn- 

 themum by the capsule be- 

 ing usually 5-valved, and 

 the flowers cymose or soli- 

 tary, seldom racemose. Ety- 

 mology from the Greek name 

 Kia-TOf. Some of the species 

 are tolerably hardy in the 

 South of England. 



1. C. ladaniferus (fig. 



Fig. 41. Cistus ladanifems. (J nat. size.) 41). This has Sessile 3- 



nerved lanceolate leaves, glutinous above, and covered with a 



