Despite
some authors, based in
molecular studies, recently recombined various
genera derived from Oncidium
sections like Cebolletae,
Plurituberculata and Pulvinata subordinating it
to Trichocentrum we agree that
morphological affinity for identification purposes are
better represented accepting other genera nomenclature to subordinate
this recent combinations.
Thus we are adopting here the following nomenclature in spite of Trichocentrum phylogenetic affinity
of species that have been moved to traditional Trichocentrum:
1. Trichocentrum for traditional
species that aren't
recombined recently. This species have plain leaves and apparent
conspicuous calcar
(nectary).
2.
Cohniella for
those species who derived from classical Oncidium
sect. Cebolletae Lindl. This species have speckled terete leaves without
apparent calcar.
3.
Lophiaris
for those species who derived from Oncidium
sect. Plurituberculata Lindl. This species have speckled
plain leaves without
apparent calcar.
4. Grandiphyllum
for those species who derived from Oncidium sect.
Pulvinata Lindl. and those who haven't recombined into Trichocentrum recently like Oncidium sect. Paucituberculata
Lindl. pro parte. This
species have large or short plain no speckled leaves like
"mule ear" and they have usually trichomaceous elaiophores on flower's
lip without apparent calcar.
