AFRICAN

ORCHIDS

Platylepis glandulosa (Lindl.) Rchb.f., Linnaea 41: 62 (1876).
Homotypic Synonyms:
Notiophrys glandulosa Lindl., J. Proc. Linn. Soc., Bot. 6: 138 (1862).
Erporkis glandulosa (Lindl.) Kuntze, Revis. Gen. Pl. 2: 660 (1891).
Heterotypic Synonyms:
Diplogastra angolensis Welw. ex Rchb.f., Flora 48: 183 (1865).
Platylepis angolensis (Welw. ex Rchb.f.) T.Durand & Schinz, Consp. Fl. Afric. 5: 58 (1894).
Platylepis australis Rolfe, Bull. Misc. Inform. Kew 1906: 378 (1906).
Platylepis engleriana Kraenzl. ex Engl. in H.G.A.Engler & C.G.O.Drude, Veg. Erde 9(II): 427 (1908).
Platylepis talbotii Rendle, Cat. Pl. Oban: 109 (1913).
Platylepis nyassana Schltr., Bot. Jahrb. Syst. 53: 557 (1915).
Description:
Rhizome up to 25 cm long, creeping, fleshy, unbranched or sparsely branching, lying on the soil or subterranean. Roots fleshy, villous. Stem 20-36 cm tall, erect, stout, glabrous. Leaves 6-8, spirally arranged along stem; sheath up to 2.5 cm long, narrowing apically to 2-2.5 cm long petiole; blade 4.8-11 cm long, 1.2-5.5 cm wide, ovate to elliptic, acuminate, slightly asymmetric, sometimes undulate along margins; 4-6 cauline bracts above leaves. Inflorescence terminal, spike 5-6 cm long, 30-60-flowered, dense. Rhachis, bracts, ovary and sepals densely glandular. Flowers green, pink-brown tinged, lip white, pink-brown at the base. Floral bracts 15 mm long, broadly ovate, subacute, herbaceous, stout. Ovary 8-10 mm long, erect, twisted. Dorsal sepal 6-10 mm long, 2.2-3 mm wide, oblong-ovate, thin, cochleate, subobtuse. Petals 5-9.5 mm long, I mm wide, oblanceolate to spatu-late, obtuse, thin, delicate, glabrous. Lateral sepals of the same size, obliquely oblong, subacute, thin, cochleate. Lip 5.5-8.5 mm long, 2.2-2.5 mm wide, joined together with the gynostemium almost to its apex, sessile, indistinctly constricted in the apical part, oblong in general outline, canaliculate; basal part deeply saccate with 2 thickenings inside; apical part more or less cordate, undulate on margin, reflexed, with obscure V-shaped thickening. Gynostemium 5-8 mm long.
Habitat:
In deep shade in marshy forests, sometimes in plantations. All year round, usually in January and July-August.
Flowering time:
Jan - Feb
Cultivation:
As given for the genus.
Distribution:
Guinea-Bissau, Guinea, Liberia, Ivory Coast, Ghana, Nigeria, Cameroon, Central African Republic, Sao Tomé and Principe, Equatorial Guinea (Rfo Muni, Annobon, Bioko), the Republic of Congo?, the Democratic Republic of Congo (Zaire), Sudan, Uganda, Tanzania, Angola, Zambia, Malawi, Zimbabwe, Mozambique, Republic of South Africa. Alt. up to 1300 m.
References:
Orchidaceae of West-central Africa, vol. 1, Gdansk University Press Gdansk 2010; Linder, H.P. & Kurzweil, H. (1999). Orchids of Southern Africa A.A. Balkema, Rotterdam; La Croix, I. & Cribb, P.J. (1995). Orchidaceae (Part 1) Flora Zambesiaca 11(1); Cribb, P.J. (1984). Orchidaceae (Part 2) Flora of Tropical East Africa; Ball, J.S. (2009). Terrestrial African Orchids, A Selected Review
Images:
Click on each image to see a larger version.

Habitat/In situ  Habitat/In situ  Habitat/In situ  Habitat/In situ  Habitat/In situ  Habitat/In situ 
platylepis glandulosa 01  platylepis glandulosa 02  platylepis glandulosa 03  platylepis glandulosa 04  platylepis glandulosa 05  platylepis glandulosa 06 
Photograph ©Frederic
Henze. Image used with
kind permission. 
Photograph ©Frederic
Henze. Image used with
kind permission. 
Photograph ©Frederic
Henze. Image used with
kind permission. 
Photograph ©Frederic
Henze. Image used with
kind permission. 
Photograph ©Frederic
Henze. Image used with
kind permission. 
Photograph ©Frederic
Henze. Image used with
kind permission.