Dendrobieae

Dendrobieae is a tribe in the subfamily Epidendroideae, in the family Orchidaceae.
The "Dendrobieae" are mostly tropical, epiphytic orchids which contain pseudobulbs.
A few species in this tribe, such as "Dendrobium" and "Bulbophyllum", are strongly favored by orchid growers.
Features.
"Dendrobieae" are mostly small, epiphytic orchids. The roots are covered by velamen. There are usually pseudobulbs present, with leaves at the top; sometimes the species lacks pseudobulbs and the leaves are spread across the stem or the plant is leafless.
The flowers are terminal or axillary and spread across the stalk. The gynostemium is firm, with a clear foot. The anther is bent. The two or four pollinia are naked, they contain no viscidium, just like the "Malaxideae".
Distribution.
"Dendrobieae" have a pantropical distribution.
Taxonomy.
Taxonomy according to Dressler, Cameron and van den Berg.
The taxonomy of "Dendrobieae" is still under discussion. The group has been described with the composition below by Dressler (1993), but appears to be a polyphyletic group. This was investigated by Cameron et al. (1999) and van den Berg et al. (2000). However, they moved the genus "Pseuderia" to the tribe Podochileae. As a result, the tribe contained two subtribes, 27 genera and about 3,000 species.
"Dendrobieae" ' s phylogenetics can be seen below:
Taxonomy according to Clements.
In various studies in 2003 and 2006 based on DNA analysis, Clements called for a review of "Dendrobieae" to be placed in the more monophyletic groups. Thus Bulbophyllinae was positioned earlier while Podochileae in its original position.
He placed the genus Epigeneium in a separate monophyletic subtribe, Epigeneiinae, after "Dendrobieae". The genus "Dendrobium" is split further: The species of the section "Oxystophyllum" were placed under "Podochileae", the Australasian "Dendrobium"-species were split into a new set of genera in the Grastidiinae subtribe.
The "Dendrobiinae" subtribe then contained the genus "Dendrobium" which includes the Asiatic species of the former giant genus, totalling over 450 species, and several genera separated from it.
Based on his "Dendrobium" research, it was found that in the future, even more monphyletic groups could be identified in the future as separate genera.
The pedigree chart of "Dendrobieae" can be found below:
 