Mesembryanthemaceae - Ruschioideae - Mitrophyllum Group - Meyerophytum Schwantes
Description:
Low, compact shrublets with prostrate to ascending branches, internodes well visible, old dry leaf sheaths persistent
Leaves opposite, of 2 kinds: first leaf pair of season globose, grey-green; second united for a third to half length, deeper green, with conspicuous bladder cell idioblasts, base of latter developing into a papery parchment-like sheath enclosing first (assimilating) leaf pair of next season during dry period
Flowers solitary, terminal, long-pedicelled, thus well exserted above a long leaf pair, up to 40 mm in diameter; opening at midday, closing in afternoon
Sepals 5, subequal
Petals 3- or 4-seriate, linear, violet-purple or white
Stamens erect, inner ones papillate at base; staminodes 0
Nectary a crenulate ring
Ovary flat to concave on top; placentas parietal; stigmas 5, broad, plumose
Fruit a 5-locular capsule, of Mitrophyllum type but with deeply concave covering membranes with a prominent distal bulge touching the protuberance reaching from base of expanding sheet into locule; closing bodies 0; valve wings ample; expanding keels flat
Seeds ovoid or pear-shaped, smooth
x = 9
Flowering after good rains in spring
Distinguishing characters:
Compact shrublets with weak, repeatedly branching stems
Resting leaf bodies conspicuous
Nomenclature:
Meyerophytum Schwantes
Schwantes: 436 (1927)
Bolus: 345-346 (1958)
Herre: 208 (1971)
Smith et al.: 238 (1998)
Depacarpus N.E.Br.
Brown: 71 (1930)
Distribution & Notes:
Southern Africa: Species 1: Meyerophytum meyeri (Schwantes) Schwantes, restricted to the Northern Cape, from the Richtersveld to S Namaqualand
References:
BOLUS, H.M.L. 1958. Meyerophytum Schwant. Notes on Mesembryanthemum and allied genera. 3. University of Cape Town, Cape Town
BROWN, N.E. 1930. Mesembryanthemum and some new genera separated from it. Gardeners' Chronicle 87
HERRE, H. 1971. The genera of the Mesembryanthemaceae. Tafelberg, Cape Town
SCHWANTES, G. 1927. Einige neue Mesembrianthemaceen. Möllers Deutsche Gärtner-Zeitung 42
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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