Orthochilus euanthus (Schltr.) Bytebier

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Photo: Nicholas Wightman
Lilayi Lodge, Lusaka Distr., Lusaka Province

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Synonyms:	Eulophia abyssinica var. euantha (Schltr.) Geerinck Eulophia euantha Schltr. Eulophia speciosa Rolfe. nom illegit
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Description:	Terrestrial herb 20-40 cm tall from subterranean irregular shaped tubers 2-2.5 cm long and 1.6-2 cm in diameter forming chains; leaves 1-3, 12-45 cm x 1.5-10 mm, linear and grass-like, acuminate, ribbed, absent or partly developed at flowering; inflorescence densely 4-12 flowered, scape with 3 short sheaths in the basal half; ovary and pedicel c. 10 mm long; bracts spreading, 10-25 mm long, lanceolate; flowers not opening wide, spreading at first and becoming pendulous, white to pale or lilac pink, lip with a large darker blotch; sepals 19-33 x 5-12 mm, oblong, the laterals oblique and slightly keeled on outside; petals 17-25 x 5-9 mm, oblong to oblong elliptic; lip 16-25 x 10-19 mm, 3-lobed, side lobes small, rounded, mid-lobe up to 15 mm wide, transversely oblong to orbicular with a callus of 2 papillate ridges from the base to the junction of the lobes and sparse long papillae on the mid-lobe; spur 2-4 mm long, cylindrical, horizontal or incurved.
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Flowering time:	Nov - Dec
Worldwide distribution:	From Burundi and Tanzania south to DRC, Zambia, Malawi and Mozambique.
Malawi distribution:
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Spot characters:	Display spot characters for this species
Literature:	Burrows, J.E. & Willis, C.K. (eds) (2005). Plants of the Nyika Plateau Southern African Botanical Diversity Network Report No. 31 SABONET, Pretoria Page 323. La Croix, I. & Cribb, P.J. (1998). Orchidaceae (Part 2) Flora Zambesiaca 11(2) Page 505. (Includes a picture). La Croix, I. et al. (1991). Orchids of Malawi A.A. Balkema, Rotterdam Page 305. (Includes a picture). Martos, F., Johnson, S.D., Peter, C.I & Bytebier, B. (2014). A molecular phylogeny reveals paraphyly of the large genus Eulophia (Orchidaceae): A case for the reinstatement of Orthochilus Taxon 63(1) Page 19. Moriarty, A. (1975). Wild Flowers of Malawi Purnell & sons Cape Town. Pages 41 - 42. As Eulophia euantha (Includes a picture). Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 120. As Eulophia euantha Williamson, G. (1977). The Orchids of South Central Africa J.M. Dent & Sons Ltd., London. Pages 154 - 155. As Eulophia euantha (Includes a picture).

Other sources of information about Orthochilus euanthus:

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Flora of Burundi: Orthochilus euanthus
Flora of Mozambique: Orthochilus euanthus
Flora of Zambia: Orthochilus euanthus

External websites:

African Plants: A Photo Guide (Senckenberg): Orthochilus euanthus
African Plant Database: Orthochilus euanthus
BHL (Biodiversity Heritage Library): Orthochilus euanthus
EOL (Encyclopedia of Life): Orthochilus euanthus
GBIF (Global Biodiversity Information Facility): Orthochilus euanthus
Google: Web - Images - Scholar
iNaturalist: Orthochilus euanthus
IPNI (International Plant Names Index): Orthochilus euanthus
JSTOR Plant Science: Orthochilus euanthus
Mansfeld World Database of Agricultural and Horticultural Crops: Orthochilus euanthus
Plants of the World Online: Orthochilus euanthus
Tropicos: Orthochilus euanthus
Wikipedia: Orthochilus euanthus