Habenaria yookuaaensis Mejía-Marín, Espejo, López-Ferr. & R.Jiménez 2017 SECTION Seticauda
Photo/TYPE Drawing by © Mejía-Marín, Espejo, López-Ferr. & R.Jiménez and The Phytotaxa Website
LATE
EARLY
Common Name The Yo’o kua’a Habenaria [Mixtec for The Place of Red Soil]
Flower Size 1/2" [1.2 cm]
Found in Oaxaca state of Mexico between rocks, on moist soils rich in organic matter, under the shade of the trees on riverbanks at elevations around 300 to 1800 meters as a medium sized, hot to cool growing terrestrial with erect, glabrous stems carrying 8 to 11 polystichous, largest inthe middle, lower reduced to sheaths, elliptic to narrowly elliptic, membraneous, entire, glabrousm , 3 veined, acute to acuminate, attenuate below into the base leaves that blooms in the late summer and early fall on a terminal, racemose, 3.2 to 6" [8 to 15 cm] long, cylindrical, rachis slightly keeled, green, 12 to 15 flowered inflorescence with lanceolate, acuminate, entire, slightly larger than the ovary below, shorter than the ovary above, 3 to 5 veined floral bracts and carrying ascendant, white greenish flowers.
"The new taxon belongs to the complex of Habenaria brevilabiata , H. virens , H. floribunda, H. strictissima , and H. acalcarata , characterized by the presence of a widened lip, with basal triangular, divaricate auricles or lobes, and entire petals. However H. yookuaaensis is distinguished by its flowers white-greenish with the petals oblong-falcate. The most similar species, H. brevilabiata, is an epiphyte (vs. terrestrial), 8 to 12" [20 to 30 cm ]tall (vs. 14 to 16.8" [35 to 42 cm]) and has flowers yellowish-green (vs. greenish-white). The plants of H. virens are larger (more than 20" [50 cm] vs. 14 to 16.8" [35 to 42 cm ]tall), with numerous flowers (20 to 30 vs. 12 to 18), and a reflexed lip with two divergent triangular lobes and the spur curved and directed upwards. In the case of H. odontopetala the plants are higher ( 20 to 24" [50 to 60 cm] vs. 14 to 16.8" [35 to 42 cm]), and the petals are tridentate (vs. obtuse). H. strictissima has more than 30 flowers densely disposed (vs. 12 to 18 laxly disposed), the lip triangular-oblong (vs. linear-oblong) and the petals subquadrate (vs. oblong-falcate). Finally, in H. acalcarata the flowers, 40 to 80 per inflorescence (vs. 12 to 18), are smaller (.32 to .36" [8 to 9 mm] vs .6 to .64" [15 to 16 mm]), and without a spur." Mejía-Marín, Espejo, López-Ferr. & R.Jiménez 2017
Synonyms
References W3 Tropicos, Kew Monocot list , IPNI ;
*Phytotaxa 292 (1): 074–078 Mejía-Marín, Espejo, López-Ferr. & R.Jiménez Habenaria yookuaaensis (Orchidaceae: Orchidioideae), a new species from Oaxaca, Mexico 2017 drawing/photo fide
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