Cyperaceae - Caricoideae - Schoeneae - Cyathocoma Nees
Description:
Robust perennials, up to 1 m tall, with short horizontal rhizomes
Culms erect, with aerial nodes
Leaves eligulate, basal ones stout, up to 300 mm long, subdistichous; basal sheaths large, striate, adaxial apex V-shaped; blade without keeled midrib, profile thickly crescentiform
Inflorescence a large, fairly dense panicle; lowest bracts foliaceous
Spikelets straw-coloured to chestnut-red, ellipsoid, of 4 or 5 spirally arranged glumes, lowest 1 or 2 glumes empty, often aristate, next 1 fertile, bisexual, followed by 1 male floret or empty glume
Perianth of 6 bristles, longer than nut, sparsely barbate
Stamens 6
Style with swollen, conical, hispid base, shortly 3-branched
Nutlet brown to red-brown, obovate, 3-angled, with conspicuous hairy beak
Nomenclature:
Cyathocoma Nees
Nees: 300 (1835)
Macrochaetium Steud.
Steudel: 159 (1855)
Clarke: 291 (1898)
Schonland: 62 (1922)
Levyns: 77 (1947)
Levyns: 128 (1950)
Gordon-Gray: 111 (1972)
Bond & Goldblatt: 44 (1984)
Ideleria Kunth
Kuth: 310 (1837) name illegitimate
Tetraria P.Beauv. subgen. Eutetraria (C.B.Clarke) Kük. in part
Kükenthal: 195 (1940)
Recently Bruhl: 129 (1995) has shown that Cyathocoma Nees predates Macrochaetium Steud
Distribution & Notes:
Southern Africa: Species 3, Western Cape to KwaZulu-Natal with Cyathocoma bachmannii (Kük.) C.Archer possibly also in Mozambique
References:
BOND, P. & GOLDBLATT, P. 1984. Plants of the Cape Flora: A descriptive catalogue. Journal of South African Botany Suppl. Vol. 13
BRUHL, J.J. 1995. Sedge genera of the world: relationships and a new classification of the Cyperaceae. Australian Systematic Botany 8, 2
CLARKE, C.B. 1898. Cyperaceae. Flora capensis 7
GORDON-GRAY, K.D. 1972. Cyperaceae. In J.H. Ross, The Flora of Natal. Memoirs of the Botanical Survey of South Africa No. 39
KÜKENTHAL, G. 1940. Vorarbeiten zu einer Monographie der Rhynchosporoideae 9. Feddes Repertorium 48
LEVYNS, M.R. 1947. Tetraria and related genera, with special reference to the flora of the Cape Peninsula. Journal of South African Botany 13
LEVYNS, M.R. 1950. Cyperaceae. In R.S. Adamson & T.M. Salter, Flora of the Cape Peninsula. Juta, Cape Town
NEES VON ESENBECK, C.G. 1835. Uebersicht der Cyperaceengattungen. Linnaea 9
SCHONLAND, S. 1922. Introduction to South African Cyperaceae. Memoirs of the Botanical Survey of South Africa No. 3
STEUDEL, E.G. 1855. Synopsis plantarum glumacearum. 2. Cyperaceae. [Synopsis plantarum Cyperacearum.] J.B. Metzler, Stuttgart
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