Coeliopsidinae

Coeliopsidinae is a subtribe of plants in the orchid family. The three members of this subtribe have traditionally been lumped in with Stanhopeinae, but obvious morphological traits and new molecular analysis by Whitten et al. in 2000 confirmed the group reclassified by Szlachetko (1995).

Coeliopsidinae
Coeliopsis hyacinthosma
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Epidendroideae
Tribe: Cymbidieae
Subtribe: Coeliopsidinae

These genera have smooth, unribbed, ovoid pseudobulbs with 3-4 large and thin plicate leaves. The inflorescences are thick and bear globose flowers with thick, fleshy sepals and petals, presence of a column foot and mentum. Roots have prominent root hairs.

Most distinct is the viscidia that are button-shaped and sclerified with short stipes. The three genera all have elongated Maxillaria-type dust seeds and not Stanhopea-type balloon seeds.

Like Stanhopeinae the members of this group are pollinated by male euglossine bees. The sticky viscidia of this group are adapted to attachment on the smooth surface of the scutum of the male bees. (Peristeria elata, the pollinia attaches to the bee's head; in Coeliopsis, on the frons of the bee's head; Williams, 1982.)

Stanhopeinae and Coeliopsidinae are now considered closely related sister subtribes.

Genera
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References
  • W. Mark Whitten, Norris H. Williams and Mark W. Chase (2000). "Subtribal and generic relationships of Maxillarieae (Orchidaceae) with emphasis on Stanhopeinae: combined molecular evidence". American Journal of Botany. American Journal of Botany, Vol. 87, No. 12. 87 (12): 1842–1856. doi:10.2307/2656837. JSTOR 2656837. PMID 11118422.
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