Monday, January 23, 2017

[Botany • 2017] Habenaria yookuaaensis • A New Species (Orchidaceae: Orchidioideae) from Oaxaca, Mexico

Habenaria yookuaaensis 
Mejía-Marín, Espejo, López-Ferr. & R. Jiménez


Habenaria yookuaaensis, a new species from the state of Oaxaca, is described and illustrated. The new taxon is part of the H. brevilabiataH. virensH. odontopetalaH. strictissima, and H. acalcarata complex, species with which the new entity is compared.

Keywords: Jamiltepec, Monocots, San Juan Colorado, terrestrial orchid, Mexico


Habenaria yookuaaensis Mejía-Marín, Espejo, López-Ferr. & R. Jiménez, sp. nov. (Figs. 1, 2)

Similar to Habenaria brevilabiata Richard & Galeotti (1845: 29), but habit terrestrial, with flowers white-greenish, petals oblong-falcate, and lip acuminate, with two triangular divaricate basal auricles.

Etymology:— The specific epithet refers to the name of San Juan Colorado, place where was found the new taxon, and derives from the Mixtec word “yo’o kua’a” formed by the terms “yo’o” (bejucos, lianas) and “kuaa’a” (rojo, colorado), and means “lugar de tierra colorada” (place of red soil). 

Distribution and Habitat:— Habenaria yookuaaensis is known until now from two localities in the state of Oaxaca. The plants are very scarce and grow between rocks, on moist soils rich in organic matter, under the shade of the trees on the riverbanks. It flowers in September. 

María Isabel Mejía-Marín, Adolfo Espejo-Serna, Ana Rosa López-Ferrari and Rolando Jiménez Machorro. 2017. Habenaria yookuaaensis (Orchidaceae: Orchidioideae), A New Species from Oaxaca, Mexico.
Phytotaxa. 292(1); 74–78. DOI: 10.11646/phytotaxa.292.1.7


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