Base de données des plantes d'Afrique


Eulophia malangana (Rchb. f.) Summerh.
Famille : ORCHIDACEAE
Informations sur le genre : Eulophia
Basionyme : Lissochilus malanganus Rchb. f.
 
 
Statut
Statut pour TA : accepté (présent)
 
Synonyme(s) homotypique(s)
 Lissochilus malanganus Rchb. f.
 
Synonyme(s) hétérotypique(s)
=Eulophia rigidifolia Kraenzl. (1914)
=Eulophia warburgii Schltr. (1903)
 
Ecologie et distribution
Afr. Trop.
Biologie : Terrestrial herb 60-100 cm tall; rhizome subterranean, to 6 cm long or more, 0,6-1 cm Ø; leaves 3-6, developed after anthesis, linear, erect, grass-like, ribbed 20-50x0,2-1,5 cm, lowermost sheathing; inflorescence peduncle with 3-4 well-spaced sheaths; rachis 6-15 cm long, 8-15-flowered; bracts elliptic, 6-10x c. 3 mm; pedicel and ovary c. 20 mm long; flowers spreading, white with green blotch on apex of sepals, lip with faint purple marks; sepals erect, spathulate, 10-13x2,5-9 mm; petals ovate, 10-12x6-10 mm, lying over column; lip projecting forwards, 15-21 mm long, 7-12 mm wide, obscurely 3-lobed, callus obscure with 5 central veins somewhat thickened; side lobes erect, small; mid-lobe large, rounded, margins undulate; spur conical, 2-4 mm long, recurved; fruit pendent, 20-23 mm long.
Ecologie : Seasonally wet or waterlogged grassland; swamps; dambo; damp peaty soil on lake margins; 1300-2100 m alt.
  Note: Rolfe (in Fl. Trop. Afr. 7: 89, 1897) remarked that “Durand & Schinz (Consp. Fl. Afr. V. 29) confound this [= Lissochilus malanganus] with the quite different L. malangensis Reichb. f.”. This is also the case in Fl. Cameroun 35: p. 610, plate 255 p. 611, 2001. The drawing (pl. 255/F-I) was made from specimen Baum 564, collected in S Angola on the Jonkoa (“am Jonkoa”), at 1150 m alt., in sandy soil, flowering on 21st December 1899. This specimen figures under Eulophia malangensis (Rchb. f.) Schltr. in Warburg, Kunene-Sambesi-Expedition H. Baum: p. 218, 1903. However, E. malangensis (Rchb. f.) Schltr. is a synonym of E. livingstoneana (see above under that species). On the other hand, Figueiredo & Smith in Plants of Angola: 190-191, 2008, do not quote specimen Baum 564 in their list of Eulophia. The lip represented in Fl. Cameroun 35: pl. 255/F, 2001, does not correspond with that of E. malangana, and also not with the lip of E. livingstoneana. If the Fl. Cameroun drawing was really made from Baum 564, the flower lip rather resembles that of E. holubii (cf. Fl. Afr. Centr., Orchid. 2: pl. 98/8 on p. 631, 1992). The latter species occurs in, i.a., Angola and adjacent Botswana-Zambia, and its presence “am Jonkoa” is not excluded.

Bibliographie pour l'Afrique Tropicale :
  • Exell, A. & Wild, H. (1998). Flora Zambesiaca: Mozambique, Federation of Rhodesia and Nyasaland, Bechuanaland Protectorate. London Kew 11[2]: 493
 
Plus d'info sur :
voir d'autres informations sous Jstor_African Plant Initiative
voir d'autres informations sous Flore d'Afrique Centrale
voir d'autres informations sous African Plants - a Photo Guide
 
Carte
carte afrique num 45914
 
Enregistrement n°45914
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