Helianthemum cinereum (Cav.) Pers.


Family	CISTACEAE
Genus species	Helianthemum cinereum (Cav.) Pers.
Synonyms	Cistus cinereus Cav.
	Helianthemum pulchellum Sweet
	Helianthemum rhodax Steud.
Habitat	dry, stony grassland
Altitude	0-2000m
Description	lax caespitose, green to grey tomentose, leaves ovate to lanceolate, at base cordate or orbiculate, flowers 8-10mm across, in paniculate cluster
Size	10-15cm
Color	yellow
Bloom	late spring, summer
Ca	+
Type	subshrub
Cultivation	sunny site with a deep, drained soil alpine house, rich, drained soil, sun
Propagation	seed in spring, barely covered, germ. 1-3 months, 13-18°C cuttings in late summer
Territory	Europe Southwestern Europe (Spain ) Southeastern Europe (Italy ) Africa Northern Africa (Algeria , Morocco)
Bibliography	Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org

Comments	CISTACEAE Helianthemum cinereum (Cav.) Pers., Syn. Pl. [Persoon] 21(1): 76 (1806) Basionym: Cistus cinereus Cav., Icon. [Cavanilles] 2: 33 (1793) Synonyms: Rhodax cinereus (Cav,) Holub 0-2000m ============================================================================= cinereum typicum ined. Synonyms: Cistus anglicus L. Cistus crassifolius Poir. Cistus seguieri Crantz Cistus strigosus Fisch. ex Steud. Helianthemum cinereum nummularium (Cav.) Losa & Rivas Goday Helianthemum cinereum paui (Font Quer & Rothm.) G.López Helianthemum paniculatum Boiss. ex Willk. Helianthemum pulchellum Sweet Helianthemum rhodax Steud. Helianthemum strigosum Fisch. Rhodax chamaecistus Spach Rhodax penicillatus Fourr. wc. Medit. 12 SPA 13 ITA 20 ALG MOR cinereum argenteum (Maire) Dobignard, J. Bot. Soc. Bot. France 46: 22 (2009) Basionym: Helianthemum rubellum argenteum Maire, Bull. Soc. Hist. Nat. Afrique N. 14: 128 (1923) Algeria, Morocco 20 ALG MOR cinereum guadicciannum (Font Quer & Rothm.) G.López, Anales Jard. Bot. Madrid 50: 59 (1992) Basionym: Helianthemum viscidulum guadiccianum Font. Quer & Rothm. Synonyms: Helianthemum cinereum rossmaessleri (Willk.) G.López Helianthemum obovatum Willk. Helianthemum rossmaessleri Willk. Helianthemum viscarioides Hervier Helianthemum viscidulum viscarioides (Hervier) Guinea & Heywood Rhodax rossmaessleri (Willk.) Holub Rhodax viscarioides (Hervier) Holub s. Spain 12 SPA cinereum hieronymi (Sennen) G.López, ibid. Basionym: Helianthemum hieronymi Sennen, Exsicc. (Pl. Esp.)1929: No. 6717 (1929) Synonyms: Helianthemum rossmaessleri hieronymi (Sennen) Rivas Mart. & Cantó Rhodax hieronymi (Sennen) Holub se. Spain 12 SPA cinereum rotundifolium (Dunal) Greuter & Burdet, Willdenowia 11: 275 (1981) Basionym: Helianthemum rotundifolium Dunal, Prodr. [A.P.de Candolle] 1: 277 (1824) Synonyms: Helianthemum rubellum rotundifolium (Dunal) Murb. Rhodax rotundifolius (Dunal) Holub Helianthemum cinereum floribundum (Pomel) Font Quer & Rothm. Helianthemum cinereum paniculatum (Dunal) Pau Helianthemum cinereum tenuicaule (Pomel) Jahand, & Maire Helianthemum floribundum Pomel Helianthemum nummularium Guss. Helianthemum paniculatum Dunal Helianthemum prostratum Pomel Helianthemum rubellum prostratum (Pomel) Batt. Helianthemum tenuicaule Pomel Rhodax prostratus Pomel e. & s. Spain, n. Africa 12 SPA 20 ALG LBY MOR TUN