Hadrangis

Fournel, Jacques, Micheneau, Claire & Baider, Claudia, 2015, A new critically endangered species of Angraecum (Orchidaceae) endemic to the island of Mauritius, Indian Ocean, Phytotaxa 222 (3), pp. 211-220 : 218

Key to the four species of the section Hadrangis

1. Flowers white, inflorescences erect...................................................................................................................................................2

- Flowers white-cream to greenish, inflorescences curved slightly downwards..................................................................................3

2. Leaves with prominent venation, inflorescences shorter than leaves or of similar length, peduncle as long as or longer that the raceme; bracts shorter than the ovary.................................................................................................................. Angraecum striatum

- Leaves with faint venation, inflorescences shorter than leaves, short peduncle; bracts longer than the ovary ................................... ........................................................................................................................................................................ Angraecum bracteosum

3. Leaves 10–30 cm long, green; inflorescences 5–10 cm long; thick, fleshy flowers, flowers ~ 2.5 cm high, whitish ........................ .............................................................................................................................................................................. Angraecum cadetii

- Leaves less than 10 cm long, dark green; inflorescences 5–7 cm long; thin flowers, flowers <2 cm high, greenish......................... .................................................................................................................................................................... Angraecum jeannineanum