Acaulescent to shortly stemmed, succulent perennials; decumbent or erect, rarely pendulous; solitary or proliferating from base; 0.15-1 m tall
Leaves succulent, distichous in juvenile stage (which may persist), spirally arranged or rosulate, lorate, lanceolate to ensiform or deltoid; erectly spreading to strongly recurved; both surfaces smooth or rugulose, tubercles white or greenish; usually with distinct adaxial acentral keel; margins acute or rounded, marginal tubercles often merging apically to form continuous white band; apex acute, rarely retuse, mucronate
Inflorescence a laxly flowered raceme or panicle; erectly spreading to horizontal, often pink in upper half; bracteate
Flowers tubular, usually markedly bulbous (gasteriform) at base for up to two-thirds of its length, curved upwards and outwards, usually borne pendulously secund, pedicellate
Perianth segments with apices free, fused above when wilted; usually 3-coloured, reddish pink, green and with short, yellow or white-tipped lobes, rarely nearly white or uniformly pink with yellow
Stamens included or barely exserted; filaments white, filiform, slightly flattened
Ovary oblong-ovoid, with many axile ovules; style filiform; stigma minute, becoming shortly exserted, exceeding anthers after anthesis
Capsule erect, green, cylindric, oblong to oblong-ovoid, apically truncate, chartaceous to woody when dry
Seeds dark brown to black, irregularly angled, laterally compressed, obscurely winged
x = 7
Nomenclature:
Gasteria Duval
Duval: 6 (1809)
Baker: 286 (1896-1897)
Berger: 122 (1908)
Phillips: 148 (1926)
Phillips: 186 (1951)
Schelpe: 17 (1958)
Sölch et al.: 49 (1970)
Van Jaarsveld: 6 (1992)
Van Jaarsveld: 33 (1994)
Van Jaarsveld et al.: 468 (1994)
Van Jaarsveld: 65 (1998)
Distribution & Notes:
Global: Southern Africa and Mozambique
Southern Africa: Species 18 and varieties 8, mainly in the Western and Eastern Cape, with outliers in Namibia, Northern Cape, Mpumalanga, KwaZulu-Natal
BERGER, A. 1908. Liliaceae-Asphodeloideae-Aloineae. Subtrib. II. Aloinae. Das Pflanzenreich IV, 38, III, II (Heft 33). Wilhelm Engelmann, Leipzig
DUVAL, H.A. 1809. Plantae succulentae in horto Alenconio. Gabon, Paris
PHILLIPS, E.P. 1926. The genera of South African flowering plants. Memoirs of the Botanical Survey of South Africa No. 10
PHILLIPS, E.P. 1951. The genera of South African flowering plants. Memoirs of the Botanical Survey of South Africa No. 25
SCHELPE, E.A.C.L.E. 1958. Gasteria - a problem genus of South African succulent plants. The Journal of the Botanical Society of South Africa 44
SÖLCH, A., ROESSLER, H. & MERXMÜLLER, H. 1970. Liliaceae. Prodromus einer Flora von Südwestafrika 147
VAN JAARSVELD, E.J. 1992. A synopsis of the genus Gasteria. Aloe 29
VAN JAARSVELD, E.J. 1994. Gasterias of South Africa. Fernwood Press and the National Botanical Institute, Cape Town
VAN JAARSVELD, E.J. 1998. A new taxon and new combinations in the Gasteria carinata complex. Cactus and Succulent Journal (U.S.) 70
VAN JAARSVELD, E.J., SMITH, G.F. & VAN WYK, B-E. 1994. A cladistic analysis of Gasteria (Aloaceae). South African Journal of Science 90
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