Aichryson tortuosum (Aiton) Webb & Bertel.


Family	CRASSULACEAE
Genus species	Aichryson tortuosum (Aiton) Webb & Bertel.
Synonyms	Sempervivum tortuosum Aiton
	Aichryson pulvinatum Burchard
	Semoervivum pygmaeum C.Sm. ex Link
Habitat	rocks
Altitude	100-700m
Description	leaves 10-12mm, obovate, rounded, sessile, densely glandular-hirsute, viscid, inflorescence few-flowered, flowers 9-12mm, petals elliptic, acuminate, aristate
Size	10-15cm
Color	deep yellow
Bloom	late spring
Ca
Type	succulent
Cultivation	sunny, dry, rock crevices, protection against winter wet alpine house, poor, drained soil, sun
Propagation	seed in spring, uncovered, germ. 1-3 months, 16-21°C cuttings in late summer
Territory	Africa Macaronesia (Canary Is.)
Bibliography	Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org

Comments	CRASSULACEAE Aichryson tortuosum (Aiton) Webb & Berthel., Hist. Nat. Iles Canaries (Phytogr.) 1: 184 (1840) Basionym: Sempervivum tortuosum Aiton, Hort. Kew. [W.Aiton] Air2: 148 (1789) Synonyms: Aeonium tortuosum (Aiton) A.Berger Macrobia tortuosa (Aiton) G.Kunkel 100-700m ============================================================================= tortuosum typicum ined. Synonyms: Aichryson pulvinatum Burchard Aichryson pygmaeum (C.Sm. ex Link) Webb ex Berth. Aichryson radicescens Webb & Berthel. Sempervivum pulvinatum (Burchard) Praeger Sempervivum pygmaeum C.Sm. ex Link Sempervivum radicescens (Webb & Berthel.) Christ Canary Islands 21 CNY tortuosum bethencourtianum (Bolle) Bańares & S.Scholz, Willdenowia 38(2): 481 (2008) Basionym: Aichryson bethencourtianum Bolle, Bonplandia 7: 243 (1859) Synonyms: Aeonium bethencourtianum (Bolle) Webb ex Bolle Aichryson tortuosum bethencourtianum (Bolle) Bańares Macrobia bethencourtiana (Bolle) G.Kunkel Sempervivum bethencourtianum (Bolle) Christ Canary Islands 21 CNY