Graphorkis Thouars in Nouv. Bull. Sci. Soc. Philom. Paris 1: 318 (1809).
Homotypic Names:
Eulophiopsis Pfitzer, Entwurf. Anordn. Orch.: 105 (1887).
Heterotypic Synonyms:
Graphorchis Thouars, Cahier six Planches: t. 3 (1819), orth. var.
Description:
Epiphytic, sympodial herbs. Pseudobulbs clustered, conical-ovoid to cylindrical-fusiform, with several nodes, partly covered by fibrous leaf bases; roots of two types, some attached to substrate and some aerial, erect. Leaves developing after flowering, petiolate, narrowly elliptic, acute or acuminate, thin-textured, plicate. Inflorescence paniculate, many-flowered; flowers resupinate, yellowish, marked with brown or purple. Sepals and petals free; lip 3-lobed, spurred at the base; disk with 2 keels. Column with hirsute basal auricles; rostellum elongate; pollinia 2, waxy, sessile, attached to a solitary viscidium.
Distribution:
Trop. Africa, W. Indian Ocean
Species:
| Graphorkis concolor (Thouars) Kuntze, | W. Indian Ocean. |
| Graphorkis concolor var. alphabetica F.N.Rasm. | Seychelles, Réunion, Comoros, Madagascar |
| Graphorkis concolor var. concolor. | Mascarenes. |
| Graphorkis ecalcarata (Schltr.) Summerh. | NE. Madagascar. |
| Graphorkis lurida (Sw.) Kuntze, | Trop. Africa. |
| Graphorkis medemiae (Schltr.) Summerh. | NW. Madagascar. |
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 22/07/2019
Bibliography and References:
Kurzweil H. 1987 Developmental studies in orchid flowers I: Epidendroid and vandoid species. Nordic J. Bot. 7. 427-42.
Cribb P. 1989 Flora of Tropical East Africa: Orchidaceae (part 3). Rotterdam: A A Balkema 413-651p.
