Published July 1, 2013 | Version v1
Taxonomic treatment Open

Didymoplexis Griff.

  • 1. The Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey TW 9 3 AB, United Kingdom.
  • 2. Conservatoire et Jardin botaniques de la Ville de Genève and Université de Genève, Laboratoire universitaire de Systématique végétale et Biodiversité, CP 60, 1292 Chambésy, Switzerland.

Description

Key to flowering Didymoplexis in Africa and Madagascar

1. Two or more sepals or petals fused to the mid-point or more, petals and sepals 11-15 mm .................................. 2

1a Sepals or petals adnate in the basal third or less but none of them fused to the mid-point, petals and sepals 5-8 mm long................................................................................. 3

2. Lateral sepals fused to the mid-point, other sepal and petals free to the base or fused to a fifth of their length; column with short recurved triangular apical arms, broader than long and acute at the tips; sepals and petals white up to 15 mm long; lip with a low basal bilobed callus and strongly upcurved sides ......................... D. avaratraensis

2a All sepals and petals fused to the mid-point; column lacking apical arms; sepals and petals white, up to 12 mm long; lip flabellate, orbicular, distinctly clawed, apex of claw bearing a reflexed or retrorsely placed ligule-like callus ............ ........................................................................... D. africana

3 Column lacking apical arms; lip 3-lobed at the tip, with two lines of verrucose warts along length; sepals and petals white ............................................................ D. verrucosa

3a Column with recurved apical arms that are bilobed at the tips; lip broadly obovate-spatulate, lacking rows of warts, with sides only slightly upcurved, and a tall apically trilobed callus at the base; sepals and petals white, pink or brown ........................................................... D. recurvata

Notes

Published as part of Cribb, Phillip, Gautier, Laurent & Nusbaumer, Louis, 2013, How many species are there in the holomycotrophic genus Didymoplexis Griff. (Orchidaceae) in Madagascar?, pp. 41-49 in Candollea 68 (1) on page 48, DOI: 10.15553/c2013v681a3, http://zenodo.org/record/6033898

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Linked records

Additional details

Biodiversity

Family
Orchidaceae
Genus
Didymoplexis
Kingdom
Plantae
Order
Asparagales
Phylum
Tracheophyta
Scientific name authorship
Griff.
Taxon rank
genus