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J. S. African Bot. 41: 116 1975
Family: CRASSULACEAE

Synonyms:
- Crassula rupestris subs. commutata (Friedrich) Toelken
- Crassula commutata Friedrich
Crassula rupestris subs. commutata (Friedrich) Toelken
J. S. African Bot. 41: 116 1975
Synonymy: 2
- Crassula rupestris subs. commutata (Friedrich) Toelken
- Crassula commutata Friedrich
Crassula rupestris L.f.
Suppl. Pl. 189 1782
Synonymy: 3
- Crassula rupestris L.f.
- Crassula perfossa Harv., Marloth non Lamarck
- Purgosea rupestris (L.f.) Don
Crassula rupestris subs. marnieriana (Huber & H.Jacobsen) Toelken
J. S. African Bot. 41: 116 1975
Synonymy: 2
- Crassula rupestris subs. marnieriana (Huber & H.Jacobsen) Toelken
- Crassula marnieriana Huber & H.Jacobsen
ENGLISH: Rock Crassula, Rosary plant, Rosary Vine, Concertina plant, Kebab bush
Subspecies, varieties, forms and cultivars of plants belonging to the Crassula rupestris group
Crassula rupestris L.f.: has erect, spreading or decumbent stems up to 500 mm long; leaves brownish-purple with red or yellow margin. Distribution: West to the Fish River valley in the E. Cape.
Crassula rupestris subs. commutata (Friedrich) Toelken: has leaves less than 4 mm, scarcely fused, internodes visible, stems not rooting when reaching the ground. Distribution: mountains of the lower Orange River.
- Crassula rupestris subs. marnieriana (Huber & H.Jacobsen) Toelken: has rooting, dwarf stems with leaves so close together that the stems appear columnar. Distribution: Swartberg and Anysberg in the Western Cape karoo.
Crassula rupestris subs. marnieriana cv. Contorta: has stems not linear cylindrical like in the standard type but variously twisted, bent and gnarled.
Bibliography: Major references and further lectures
1) John Wilkes “Encyclopaedia Londinensis” Volume 5 1810
2) George Don, Philip Miller “A General System of Gardening and Botany: Founded Upon Miller's Gardener's Dictionary, and Arranged According to the Natural System” Volume 3 C. J. G. and F. Rivington, 1834
3) Werner Rauh “The Wonderful World of Succulents: Cultivation and Description of Selected Succulent Plants Other Than Cacti” Smithsonian Institution Press, 1984
4) Doreen Court “Succulent Flora of Southern Africa” CRC Press, 01/giu/2000
5) Stuart Max Walters “The European Garden Flora: Dicotyledons” (Part I) Cambridge University Press, 1989
6) Gordon D. Rowley “The illustrated encyclopedia of succulents” Crown Publishers, 01/Aug/1978
7) Urs Eggl “Sukkulenten-Lexikon. Crassulaceae (Dickblattgewächse).” Eugen Ulmer, Stuttgart 2003
8) Hermann Jacobsen “Abromeitiella to Euphorbia” Blandford Press, 1960
9) Hermann Jacobsen “A handbook of succulent plants: descriptions, synonyms, and cultural details for succulents other than Cactaceae” Volume 1 Blandford Press, 1960
10) Toelken, H.R. 1997. “A revision of the genus Crassula” in southern Africa. Annals of the Bolus Herbarium 8,1-595.
11) Dr J.P. Roux “Flora of South Africa” 2003
12) Van Jaarsveld, E., Van Wyk, B-E. & Smith, G. “Succulents of South Africa.” Tafelberg, Cape Town. 2000
13) John Manning “Field Guide to Fynbos” Struik, 2007
14) Reader's Digest Association “A-Z of rock garden & water plants” Reader's Digest Association, 01/Dec/1995
15) Vera Higgins “Succulent Plants Illustrated” Blandford Press, 1949
16) Leon Nell “The Garden Route and Little Karoo” Struik Publishers, 01/Jan/2003
17) Domitilla Raimondo “Red list of South African plants 2009” South African National Biodiversity Institute, 2009
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