Diaphananthe trigonopetala Schltr., Orchis 8: 136 (1914).
Epiphytic herb 20-30 cm tall; stem leafy; leaves patent, ovate-elliptic, 6,5x2,2 cm, apex unequally 2-lobed; inflorescences laxly few-flowered, slightly shorter than leaves, bracts minute; flowers alternate, yellowish-white, glabrous; sepals ovate-oblong, obtuse, patent, 4 mm long; petals ovate-lanceolate, subacute, slightly shorter than sepals; lip quadrate, 2-lobed, 5x5 mm, margins minutely serrate, with a tooth at base in mouth of spur; spur deflexed, cylindrical, slightly longer than lip.
No data.
African Plant Database (version 3.4.0). Conservatoire et Jardin botaniques de la Ville de Genève and South African National Biodiversity Institute, Pretoria, "Retrieved [Marts 2020]",

Diaphananthe subclavata (Rolfe) Schltr., Beih. Bot. Centralbl. 36(2): 100 (1918).
Homotypic Names:
Angraecum subclavatum Rolfe, Bol. Soc. Brot. 9: 140 (1891).
Listrostachys subclavata (Rolfe) Rolfe in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 7: 160 (1897).
Eine wenig bekannte Art, welche mit D. ashantensis (Ldl.) Schltr. verwandt sein soll, aber durch das eiförmig-elliptische, zugespitzte, nicht geigenförmige Labellum abweicht. Der Sporn soll nach vorn wenig verdickt sein und die Lippenplatte an Länge nicht überragen. Bisher sind nur noch nicht voll entwickelte. Blüten der Art bekannt.
No data.
São Tomé
Beihefte zum Botanischen Centralblatt. 1918

Diaphananthe lecomtei (Finet) P.J.Cribb & Carlsward, Phytotaxa 71: 45 (2012).
Homotypic Synonyms:
Listrostachys lecomtei Finet, Mém. Soc. Bot. France 9: 54 (1907).
Chamaeangis lecomtei (Finet) Schltr., Beih. Bot. Centralbl. 36(2): 108 (1918).
Small plants with more imbricate, non-fleshy leaves, Inflorescence not fasciculate, One flower at each node of the inflorescence, Lip entire or slightly 3-lobed in the middle, never 3-toothed or 3-lobed at the apex, Lip up to 1.2 mm long, Spur more than 9 mm, Swollen part of the spur globular, Swollen part of the spur more than 2 mm wide,
As given for the genus.
W. & WC. Trop. Africa
African Orchids in the Wild and Cultivation La Croix 1997; WCSP (2017). 'World Checklist of Selected Plant Families. 26.02-2017;
Click on each image to see a larger version.

Diaphananthe Group 2
Flowers alternate, stems short, to 15 cm long in mature plants, or shorter; leaves in a rosette or crowded at the apex of the stems.

Diaphananthe ceriflora J.B.Petersen Cameroon to Gabon.
Diaphananthe divitiflora (Kraenzl.) Schltr, Cameroon, Zaïre.
Diaphananthe dorotheae (Rendle) Summerh. S. Nigeria.
Diaphananthe garayana Szlach. & Olszewski Cameroon.
Diaphananthe pellucida (Lindl.) Schltr. W. Trop. Africa to Uganda.
Diaphananthe plehniana (Schltr.) Schltr. Ivory Coast to Gabon.
Diaphananthe sanfordiana Szlach. & Olszewski Cameroon.
Diaphananthe suborbicularis Summerh. Ghana.

World Checklist of Monocotyledons. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; accessed 01.04-2020