Listrostachys Rchb.f., Bot. Zeitung (Berlin) 10: 930 (1852).
This genus was established by H. G. Reichenbach in 1852. At various times a large number of species have been attributed to it, but when Rudolf Schlechter looked carefully at it during his review of all the angraecoid orchids (1918a) he found a suite of characters that demarcated the genus fairly precisely and removed many species to other genera, such as Bolusiella and Cyrtorchis.
Listrostachys as genus understood contains only one species in West Africa. It is clearly recognized by the inflorescence, which is closely multi-flowered, the flowers in 2 rows, and which actually provides the name—from the Greek listron, spade, and stachys, ear. The lip is also quite distinctive, having a broad claw at its base that separates the spur entrance from the base of the column. The short, blunt spur stands at right angles to the lamina and hangs down parallel to the ovary.
W. & WC. Trop. Africa.
The single African species is easy to grow in cultivation in warm, shady, humid conditions. It settles well in a pot of well-drained compost and seems to grow throughout the year.
|Listrostachys pertusa (Lindl.) Rchb.f.||W. & WC. Trop. Africa.|
World Checklist of Monocotyledons. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/monocots/ accessed 01/03/2017
Bibliography and References:
Abel A. 2007 Listrostachys pertusa (Lindl.) Rchb.f. (The fishbone orchid). Orchids S. Afr. 38. (2): 24-25.
Carlsward BS, Stern WL, Bytebier B. 2006 Comparative vegetative anatomy and systematics of the angraecoids (Vandeae, Orchidaceae) with an emphasis on the leafless habit. Bot. J. Linn. Soc. 151. 165-218.
La Croix I. 1994 The Angraecoid orchids: 5. Rangaeris, Listrostachys, Summerhayesia and Plectrelminthus. Orchid Rev. 102. (1197): 129-132 (1994)
Pottinger M. 1982 African orchids: genera from 'G" to 'M'. Orchid Rev. 90. (1068): 327-329 (1982)
Cailliez R. 1977 Listrostachys pertusa. Orchidophile 8. (30): 872-873 (1977)