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,Australian Plants Online. "What is a Dockrillia?" 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 (m) Dendrobium bowmanii Australia (Queensland and New South Wales) and New Caledonia. Dendrobium brevicaudum Australia (Queensland) Dendrobium casuarinae New Caledonia Dendrobium caudiculatum Papua New Guinea Dendrobium chordiforme Papua New Guinea Dendrobium contextum Papua New Guinea Dendrobium crispatum French Polynesia (Society Islands) Dendrobium cucumerinum Australia (Queensland, New South Wales) Dendrobium erythraeum Papua New Guinea Dendrobium flagellum New Guinea Dendrobium fuliginosum New Guinea Dendrobium leptophyton Papua New Guinea Dendrobium lichenastrum Australia (Queensland) Dendrobium linguiforme Australia (Queensland and New South Wales) Dendrobium mortii New Caledonia, Australia (Queensland and New South Wales) Dendrobium nothofageti Papua New Guinea Dendrobium pugioniforme Australia (Queensland and New South Wales) Dendrobium racemosum Australia (Queensland) Dendrobium rigidum Australia(Queensland) and New Guinea Dendrobium schoeninum Australia (Queensland and New South Wales) Dendrobium striolatum Australia (New South Wales, Victoria and Tasmania) Dendrobium teretifolium Australia (Queensland and New South Wales) Dendrobium toressae Australia (Queensland) Dendrobium vagans New Caledonia, Fiji, Samoa, Vanuatu and the Santa Cruz Islands Dendrobium wassellii Australia (Queensland)
Natural Hybrids Image Name Parentage Distribution Dendrobium × grimesii Dendrobium linguiforme × Dendrobium teretifolium Queensland, Australia
References