Shrublets or shrubs with mostly erect, rarely curving or creeping branches, some species with spines, derived from sterile branches of inflorescence; roots woody, rarely tuberous
Leaves
opposite, free to connate at base to more than halfway, triangular in cross section, flat above and rounded or keeled on lower surface, keel sometimes toothed towards apex; bluish green, usually with darker dots, glabrous or ciliate, rarely papillate on margins
Flowers
axillary or terminal, solitary to many in inflorescence, usually bracteate, medium-sized
Sepals
4 or 5
Petals
pink to purple, rarely white, 1-several-seriate, sometimes arranged in 5 bundles
Stamens
arranged in a cone; filaments often hairy at base; staminodes few to many
Nectary
a continuous, crenulate, dark green ring
Ovary
± conical on top; placentas parietal; stigmas 5(6)
Fruit
a 5(6)-locular capsule, of Ruschia type; with a deep base and no valve wings; valves opening into upright position; closing bodies small, hook- hood- or rodlet-shaped, rarely larger and sometimes 0; expanding keels short, widely diverging; additional closing rodlets at distal lower surfaces of covering membranes
Seeds
variable in shape, yellowish or brownish, smooth to papillate
x = 9 (polyploidy)
Flowering
throughout the year with peaks in spring and autumn
Distinguishing characters
:
Mostly shrubby, sometimes creeping perennials
Fruit with small hook-shaped closing bodies, short tangentially arranged expanding keels
Nomenclature:
Ruschia
Schwantes
Schwantes: 186 (1926)
Friedrich: 109 (1970)
Herre: 268 (1971)
Dehn: 91 (1992)
Hartmann & Stüber: 1 (1993)
Smith et al.: 354 (1998)
Distribution & Notes:
Southern Africa
: Species 224, very wide distribution from near Helmeringhausen in Namibia and eastward in South Africa to Vereeniging in Gauteng and to Harrismith in the Free State, down to the western and southern coasts, also including the mountains of Lesotho
References:
DEHN, M. 1992. Untersuchungen zum Verwandtschaftskreis der Ruschiinae (
Mesembryanthemaceae
Fenzl).
Mitteilungen aus dem Institut für Allgemeine Botanik. Hamburg
24
FRIEDRICH, H.C. 1970.
Aizoaceae
.
Prodromus einer Flora von Südwestafrika
27
HARTMANN, H.E.K. & STÜBER, D. 1993. On spiny
Mesembryanthema
and the genus
Eberlanzia
(
Aizoaceae
).
Contributions from the Bolus Herbarium
15
HERRE, H. 1971.
The genera of the
Mesembryanthemaceae
. Tafelberg, Cape Town
SCHWANTES, G. 1926. Zur Systematik der Mesembrianthemen.
Zeitschrift für Sukkulentenkunde
2
SMITH, G.F., CHESSELET, P., VAN JAARSVELD, E.J., HARTMANN, H., HAMMER, S., VAN WYK, B-.E., BURGOYNE, P., KLAK, C. & KURZWEIL, H. 1998.
Mesembs of the world
. Briza, Pretoria
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