African Plant Database


Holothrix Rich. ex Lindl.
Family : ORCHIDACEAE
Protologue : Gen. Sp. Orchid. Pl. 257 (1835)
Notes : genus place holder: the genus is not present in Madagascar
 
Species
 
Status
Status for MA : accepted (present)
Status for SA : accepted (present)
Status for TA : accepted (present)
 
Synonym(s) Heterotypic
=Deroemeria Rchb. f.
 
Ecology and distribution
Trop. Afr.
Biology : Terrestrial small herbs, rarely encountered in nature, “because they appear above the ground, flower and die down within a short space of time” (Stewart & Campbell, Orchids Kenya: 143, 1996).
Ecology : Genus of 50-60 species in tropical Africa, S. Africa (c. 25 species) and one in Arabia (map in Pridgeon & al., Gen. orchid. 2: 315, 2001). A revision is in preparation (Bytebier & al. in P.M. Musili & G. Mwachala, XXI AETFAT Congress 2017: 267). With 1 or 2 small underground tubers, 1 or 2 sessile leaves that lie flat on the ground; flowering stem slender; flowers very small, resupinate, with free sepals, petals larger and more conspicuous than the tiny sepals; lip similar to petals, spurred; “the floral parts are [often] much divided and these [species] with larger flowers are very beautiful” (I. & E. la Croix, Afric. orchids wild & cult.: 355, 1997). One species in our area, viz. H. klimkoana, is incompletely known: tubers lacking, ecology not recorded, and known only from the type gathering.

Bibliography for Tropical Africa :
  • Énum. Pl. Fleurs Afr. Trop. 3: 142, 296 (1995).
  • Énum. Pl. Fleurs Afr. Trop. 4: 647 (1997).
  • Lebrun J.P. & A.L. Stork (2017). Orchidaceae (2) Trop. Afr. Flow. Plants (Ecol. Distr.) 10 (orch.2): 100

Bibliography other :
  • Le Péchon T., S.D. Johnson & B. Bytebier (2019). The spider orchid trapped in its molecular web: Phylogeny and morphological evolution of the orchid genera Bartholina and Holothrix (Orchidaceae: Orchidoideae Taxon 68(5): 893-904 
 
More info on :
see under Jstor_African Plant Initiative
see under Catalogue de Madagascar
see under Tropicos.org. Missouri Botanical Garden
 
Map
More information >> ( work in progress )
 
Record n°191461 modified 2008-12-27
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