Stigmatodactylus amplexicaulis
Stigmatodactylus amplexicaulis, is a species of flowering plant in the orchid family Orchidaceae and is native to eastern Australia and New Caledonia. It is a terrestrial herb with a single leaf and between 2 and 20 translucent green flowers.
Description
Stigmatodactylus amplexicaulis is a terrestrial herb with a single leaf long and wide, usually with deep lobes on the edges. Between 2 and 20 translucent green flowers are borne on a raceme long. The dorsal sepal is linear, about long and, and the lateral sepals are linear, spread apart from each other, curved downwards, about long and wide. The petals are spread apart or turned down, about long and wide. The labellum is broadly oblong, about wide and wide with coarse teeth near the end. There is a fleshy green callus near the base of the labellum and the pollinium is burgundy-coloured.Taxonomy
The species was first described in 1891 by Frederick Manson Bailey who gave it the name Microstylis amplexicaulis in the "Botany Bulletin" of the "Department of Agriculture, Queensland" from specimens collected in the "scrubs of Eudlo Creek [National Park|Eudlo Creek] in 1891". In 1903, Robert Allen Rolfe transferred the species to Acianthus as A. amplexicaulis in The Orchid Review, a name accepted by Plants of the World Online and in New Caledonia. In 2004, David Jones and Mark Clements transferred the species from M. amplexicaulis to Acianthella as A. amplexicaulis in The Orchadian, and the name is accepted by National Herbarium of New South Wales. In 2017, Stephanie Pimm Lyon, Mark Clements and David Jones transferred the species to the genus Stigmatodactylus as S. amplexicaulis, a name accepted by the Australian Plant Census.The specific epithet means "stem-clasping".