Base de données des plantes d'Afrique


Disa engleriana Kraenzl.
Famille : ORCHIDACEAE
Informations sur le genre : Disa
 
 
Statut
Statut pour TA : accepté (présent)
 
Synonyme(s) hétérotypique(s)
=Disa subscutellifera Kraenzl. (1912)
 
Ecologie et distribution
Afr. Trop.
Biologie : Terrestrial herb, “attractive”; tubers ellipsoid, 2-4x1-2 cm; sterile stem to 60 cm tall, with 2-4 linear-lanceolate acute leaves 16-22x1,5-2 cm; flowering stem 40-60 cm tall, with cauline imbricate sheathing leaves 4-8 cm long; inflorescence 6-22 cm long, 5 cm Ø, 3-20-flowered; flowers facing down, pink; bracts ovate, acuminate 30-50 mm long; pedicel and ovary c. 20 mm long; dorsal sepal spathulate, 14-22 mm long incl. claw 3-6 mm long, blade 14-18x14-18 mm, with spur from middle, clavate, pendent, 13-20 mm long; lateral sepals obliquely oblong, obtuse, 13-20 mm long, spreading upwards; petals 10-15 mm long, 2-lobed, anterior lobe 7-11x5-8 mm, posterior lobe ovate-spathulate, 10-15x3-5 mm, included in hood; lip linear, pendent, 14-18x1 mm.
Ecologie : Brachystegia and Uapaca woodlands, open woodland; associated with dambos and grassland; on lateritic and sandy soil; 1000-2100 m alt. – Sometimes forming small colonies with only a few specimens flowering in one year.
  Note: Geerinck in Taxonom. 32: 21, 2011, treats D. renziana Szlach. as a synonym. According to him, the drawing of the latter species (in Fragm. Florist. Geobot. 39/2: 545, 1994, and in Szlachetko & al., Orchids W.-C. Afr. 1: 29, 2010) represents a young individual of D. engleriana. Szlachetko describes the petals as unlobed. However, the drawing (ll.cc.) shows a ± lobed petal. We think that Geerinck may be right. However, we have kept D. renziana as ± distinct in our list below.
 
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Carte
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Enregistrement n°43402 modifié le 2005-03-09
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