Dendrobium sect. Rhizobium
Dendrobium section Rhizobium is a section of the genus Dendrobium.
Description
Plants in this section have thick, fleshy to terete leaves produced along a thin and wiry stem.The section was established in 1851 by John Lindley and Joseph Paxton. Species in this section was included in the genus Dockrilla, named after Alick Dockrill, by authors including David Jones, Mark Clements and Stephan Rauschert for some species formerly included in the genus Dendrobium. A 2008 paper, based on a study the molecular phylogenetics of a wide range of related orchids, concluded that "the splitting of Australasian dendrobiums into various genera by other authors is excessive and unnecessary" moving the species back to the section Rhizobium.
Distribution
Plants from this section are found in Australia, New Guinea, New Caledonia and Vanuatu.Species
Dendrobium section Rhizobium comprises the following species:| Image | Name | Distribution | Elevation |
| Dendrobium bowmanii Benth. 1873 | Australia and New Caledonia. | ||
| Dendrobium brevicaudum D.L.Jones & M.A.Clem. 1994 | Australia | ||
| Dendrobium casuarinae Schltr. 1918 | New Caledonia | ||
| Dendrobium caudiculatum M.A.Clem. & D.L.Jones 1996 | Papua New Guinea | ||
| Dendrobium chordiforme Kraenzl. 1910 | Papua New Guinea | ||
| Dendrobium contextum Schuit. & de Vogel ex J.M.H.Shaw 2003 | Papua New Guinea | ||
| Dendrobium crispatum Sw. 1799 | French Polynesia | ||
| Dendrobium cucumerinum MacLeay ex Lindl. 1842 | Australia | ||
| Dendrobium erythraeum Schuit. & de Vogel 2003 | Papua New Guinea | ||
| Dendrobium flagellum Schltr. 1912 | New Guinea | ||
| Dendrobium fuliginosum P.F.Hunt 1998 | New Guinea | ||
| Dendrobium leptophyton Schuit. & de Vogel 2003 | Papua New Guinea | ||
| Dendrobium lichenastrum Rolfe 1905 | Australia | ||
| Dendrobium linguiforme Sw. 1800 | Australia | ||
| Dendrobium mortii F.Muell. 1859 | New Caledonia, Australia | ||
| Dendrobium nothofageti Schuit. & de Vogel 2003 | Papua New Guinea | ||
| Dendrobium pugioniforme A.Cunn. ex Lindl. 1839 | Australia | ||
| Dendrobium racemosum Clemesha & Dockrill 1964 | Australia | ||
| Dendrobium rigidum R.Br. 1810 | Australia and New Guinea | ||
| Dendrobium schoeninum Lindl. 1846 | Australia | ||
| Dendrobium striolatum Rchb.f. 1857 | Australia | ||
| Dendrobium teretifolium R.Br. 1810 | Australia | ||
| Dendrobium toressae Dockrill 1964 | Australia | ||
| Dendrobium vagans Schltr. 1911 | New Caledonia, Fiji, Samoa, Vanuatu and the Santa Cruz Islands | ||
| Dendrobium wassellii S.T.Blake 1963 | Australia |