Dendrobium section Rhizobium is a section of the genus Dendrobium.[1] [2]
Plants in this section have thick, fleshy to terete leaves produced along a thin and wiry stem.[1]
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,[3] 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.[4]
Plants from this section are found in Australia, New Guinea, New Caledonia and Vanuatu.[1] [5]
Dendrobium section Rhizobium comprises the following species:
| Image | Name | Distribution | Elevation (m) |
|---|---|---|---|
| Dendrobium bowmanii | Australia (Queensland and New South Wales) and New Caledonia. | NaNm (-2,147,483,648feet) | |
| Dendrobium brevicaudum | Australia (Queensland) | NaNm (-2,147,483,648feet) | |
| Dendrobium casuarinae | New Caledonia | NaNm (-2,147,483,648feet) | |
| Dendrobium caudiculatum | Papua New Guinea | NaNm (-2,147,483,648feet) | |
| Dendrobium chordiforme | Papua New Guinea | NaNm (-2,147,483,648feet) | |
| Dendrobium contextum | Papua New Guinea | 1200m (3,900feet) | |
| Dendrobium crispatum | French Polynesia (Society Islands) | ||
| Dendrobium cucumerinum | Australia (Queensland) | NaNm (-2,147,483,648feet) | |
| Dendrobium erythraeum | Papua New Guinea | ||
| Dendrobium flagellum | New Guinea | 150m (490feet) | |
| Dendrobium fuliginosum | New Guinea | ||
| Dendrobium leptophyton | Papua New Guinea | NaNm (-2,147,483,648feet) | |
| Dendrobium lichenastrum | Australia (Queensland) | NaNm (-2,147,483,648feet) | |
| Dendrobium linguiforme | Australia (Queensland and New South Wales) | NaNm (-2,147,483,648feet) | |
| Dendrobium mortii | New Caledonia, Australia (Queensland and New South Wales) | NaNm (-2,147,483,648feet) | |
| Dendrobium nothofageti | Papua New Guinea | 2800m (9,200feet) | |
| Dendrobium pugioniforme | Australia (Queensland and New South Wales) | NaNm (-2,147,483,648feet) | |
| Dendrobium racemosum | Australia (Queensland) | NaNm (-2,147,483,648feet) | |
| Dendrobium rigidum | Australia(Queensland) and New Guinea | 700m (2,300feet) | |
| Dendrobium schoeninum | Australia (Queensland and New South Wales) | 600m (2,000feet) | |
| Dendrobium striolatum | Australia (New South Wales, Victoria and Tasmania) | 1000m (3,000feet) | |
| Dendrobium teretifolium | Australia (Queensland and New South Wales) | NaNm (-2,147,483,648feet) | |
| Dendrobium toressae | Australia (Queensland) | NaNm (-2,147,483,648feet) | |
| Dendrobium vagans | New Caledonia, Fiji, Samoa, Vanuatu and the Santa Cruz Islands | NaNm (-2,147,483,648feet) | |
| Dendrobium wassellii | Australia (Queensland) | 300m (1,000feet) | |