Orchidaceae
-
Orchidoideae
-
Orchideae
-
Holothrix
Rich. ex Lindl.
Description
:
Terrestrial or sometimes lithophytic herbs, with root tubers
Leaves
2 (rarely 1), flat on ground, glabrous or hairy, sometimes withering before flowering, broadly ovate to orbicular-reniform
Inflorescence
a usually secund, hairy raceme; flowers white, yellowish or green; normally resupinate; in
H. burchellii
(Lindl.) Rchb.f. flowers dimorphic
Sepals
subequal, connivent
Petals
longer than sepals, entire or variously lobed
Lip
spurred, divided into 3-many lobes
Gynostemium
short; anther thecae parallel and adjacent, anther canals absent; pollinia 2, sectile, with very short caudicles
Capsule
ovoid or oblong
Nomenclature:
Holothrix
Rich. ex Lindl.
Lindley: 283 (1835) name conserved
Rolfe: 96 (1912)
Phillips: 230 (1951)
Schelpe: 66 (1966)
Stewart et al.: 58 (1982)
Linder & Kurzweil: 96 (1999)
Distribution & Notes:
Global
: Species ± 55, Arabian Peninsula, Africa
Southern Africa
: Species 23, widespread, often under arid conditions
References:
LINDER, H.P. & KURZWEIL, H. 1999.
Orchids of southern Africa
. A.A. Balkema, Rotterdam
LINDLEY, J. 1830-1840.
The genera and species of Orchidaceous plants
. Ridgways, London
PHILLIPS, E.P. 1951. The genera of South African flowering plants.
Memoirs of the Botanical Survey of South Africa
No. 25
ROLFE, R.A. 1912. Order CXXXI.
Orchideae
.
Flora capensis
5,3
SCHELPE, E.A. 1966.
An introduction to the South African Orchids
. Purnell & Sons, Cape Town, Johannesburg
STEWART, J., LINDER, H.P., SCHELPE, E.A. & HALL, A.V. 1982.
Wild orchids of southern Africa
. Macmillan, Johannesburg
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