| Disperis johnstonii Rchb. f. ex Rolfe |
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| Family : ORCHIDACEAE |
| Protologue : Fl. Trop. Afr. [Oliver et al.] 7(2): 291 (1898) |
| Information on the genus : Disperis |
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Status
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| Status for SA : | accepted (present) |
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| Status for TA : | accepted (present) |
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| Synonym(s) Heterotypic |
| =Disperis stolzii Schltr. (1915) |
| =Disperis szolc-rogozinskiana Szlach. & Kowalk. |
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| Ecology and distribution |
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| Biology : |
Terrestrial herb 4-15 cm tall; tuber ± globose, 0,4-1 cm long and wide; leaves cauline, alternate, sessile, ovate-lanceolate, 8-3x0,5-2,2 cm, papillose, green with silvery venation above, purplish beneath; inflorescence 2-6-flowered; flowers white and pale purple or pink, lip and hood yellow; bracts ovate-lanceolate, 3-11x1-7 mm; pedicel and ovary 10-12 mm long; dorsal sepal flat, joined to petals to form an open concave hood 7-12 mm long, 7-10 mm wide; lateral sepals obliquely ovate, 7-14x4-6 mm, united in lower 1/3, each with a sac 0,5-1 mm long; petals falcate, 10x2-3 mm; lip 4-6,5 mm long, with narrow claw sharply bent back on itself near base and there bearing a 2-lobed appendage with papillose lobes, the claw ending in a ± round blade with a high keel in centre. |
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| Ecology : |
Brachystegia and Uapaca woodland; forest patches; in rich humus or sandy soil in grassy places under trees or among grass in woodland; often associated with rocks and their shelter; marshy places; with mosses in eroded gully on red soil; in semi-shade in open grassland under palms and Acacia trees; 500-2000 m alt. |
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Closely related to D. togoensis. |
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S. Africa: E coast. – Also in Zaire and Congo-Brazzaville ? Not in Fl. Afr. Centr., Orchid. 1, 1984. |
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| Biol./Eco : |
perennial-Herb, Geophyte- Ht 0.045 - 0.15 m. Alt: 50 - 600 m. Distribution: KN |
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Bibliography for Southern Africa :
- Fl. Pl. Africa 45: t.1828 (1979).
- Orchids of Southern Africa : 302 (1999).
- Adansonia, sér. 3 27[2]: 173 (2005).
Bibliography other :
- Boudet G. & J.P. Lebrun (1986). Catalogue des plantes vasculaires du Mali. Etudes et Synthèses IEMVT 16
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| More info on : |
| see under Jstor_African Plant Initiative |
| see under Flore d'Afrique Centrale |
| see under Orchidées d'Afrique Centrale |
| see under Flora of Zimbabwe |
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| Map |
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| Record n°46480 modified 2006-05-30 |
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