Base de données des plantes d'Afrique


Eulophia angolensis (Rchb. f.) Summerh.
Famille : ORCHIDACEAE
Protologue : Kew Bull. 13(1): 76 (1958)
Informations sur le genre : Eulophia
Basionyme : Cymbidium angolense Rchb. f.
 
 
Statut
Statut pour SA : accepté, NF (présent)
Statut pour TA : accepté, NF (présent)
 
Synonyme(s) homotypique(s)
 Lissochilus angolensis (Rchb. f.) Rchb. f.
 Eulophia angolensis (Rchb. f.) Summerh. var. angolensis
 Cymbidium angolense Rchb. f. (1865)
 
Synonyme(s) hétérotypique(s)
=Lissochilus buchananii Rchb. f.
=Eulophia buchananii (Rchb. f.) Bolus
=Eulophia eylesi Rendle
=Eulophia lindleyana (Rchb. f.) Schltr.
=Lissochilus lindleyanus Rchb. f. (1878)
=Eulophia stolziana (Kraenzl.) Engl.
=Cyrtopera stolziana Kraenzl. (1904)
=Lissochilus paludicolus Rchb. f. (1878)
=Lissochilus platypterus Rchb. f. (1882)
=Lissochilus antunesii Rolfe (1889)
=Lissochilus validus Rendle (1895)
=Lissochilus latus Rolfe (1897)
=Lissochilus eylesii Rendle (1905)
=Lissochilus ugandae Rolfe (1905)
=Lissochilus mildbraedii Kraenzl. (1909)
=Lissochilus katentaniensis De Wild. (1919)
 
Taxons infra-spécifiques
Eulophia angolensis (Rchb. f.) Summerh. var. angolensis
 
Ecologie et distribution
Afr. Trop.
Biologie : Terrestrial herb; rhizome underground, long, horizontal, succulent, 1-5 cm Ø, producing at intervals of 25-30 cm leaf- and scape-bearing nodes; stems annual, leafy; leaves 2-5, little developed during anthesis, linear-lanceolate, acuminate, folded, 20-130x1-5 cm; inflorescence to 0,6-2,1 m tall, erect, often 2-4-branched; peduncle stout, with 5 acute leaf sheaths; raceme 16-40 cm long, laxly (4-)15-30-flowered; flowers spreading, sepals purple-brown or yellow, petals and lip yellow, parallel to and covering column; bracts dull purple, ovate-lanceolate, 10-25 mm long; pedicel and ovary 14-21 mm long, glabrous; sepals ligulate-spathulate, 16-27x5-8 mm; petals similar, but a little wider; lip deflexed, 16-28x10-20 mm, with callus of 2-5 long tall crenulate ridges in basal part, obscurely 3-lobed near middle, mid-lobe oblong-elliptic, 7-12x5-8 mm, margins undulate, side lobes rounded, entire; spur shortly conical, to 7 mm long, or vestigial; fruit pendent, 3-4,5 cm long.
Ecologie : Marshy grassland and meadows; vleis; seasonally flooded dambos; bogs; savanna relicts in semi-decidous forest; dryish swamp forest; swamp forest margins; well-drained sandy places; in wet conditions, often by lakes and rivers; in full sun; can form large colonies; 0-2500 m alt.
  Variable in flower colour and degree of development of the callus. With some local varieties that need not taxonomic recognition (Fl. Trop. E. Afr., l.c.).
  Pollinated by beetles and bees (Peter in Orchids S. Africa 34: 89, 2003; Peter & Johnson in Bot. J. Linn. Soc. 171: 716, 720, 2013; both with photographs). Symbiotic seed germination reported from Kenya (Ochora & al. in Syst. Geogr. Pl. 71: 587, 2002).
  E S. Africa, N Botswana, Namibia ?
  When cultivated the plant needs a very deep pot as the rhizome grows 10-50 cm the year (Fibeck & Phiri in Orchidee Hamburg 52: 51, 2001). The species had “become a ‘commercial’ orchid during its flowering season in May and June, large bunches of flower spikes can be bought in the Market at a moderate price” (Piers, Orchids E. Afr., ed. 2: 167, 1968).

Bibliographie pour l'Afrique Tropicale :
  • Boudet G. & J.P. Lebrun (1986). Catalogue des plantes vasculaires du Mali. Etudes et Synthèses IEMVT 16
  • Cat. Pl. Vasc. Burkina Faso:65 (2012)
  • Darbyshire, I. Kordofami, M. & al. (2015). The plants of Sudan and South Sudan, An annoted checklist. Kew Publishing

Bibliographie autre :
  • Ortunez E, R. Gamarra & al. (2020). Revision of Eulophia (Orchidaceae) in Nigeria, Cameroon, Equatorial Guinea, Gabon, and the Republic of the Congo Pl. Ecol. Evol. 153(3): 408
 
Plus d'info sur :
voir d'autres informations sous Jstor_African Plant Initiative
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voir d'autres informations sous The International Plant Name Index
voir d'autres informations sous Flora of Mozambique
voir d'autres informations sous Orchidées d'Afrique Centrale
voir d'autres informations sous African Plants - a Photo Guide
voir d'autres informations sous Flora of Zimbabwe
 
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