Microchilus microcalcar Ormerod 2008

TYPE Drawing by © Paul Ormerod and Harvard Pap. Bot. 13: 79 fig 32 Ormerod 2008

LATER

Common Name The Tiny Spur Microchilus

Flower Size .1" [2.5 mm]

Found in Antioquia department of Colombia in forest remnants along streams at elevations of 2130 to 2400 meters as a medium sized, cold growing terrestrial with a terete, creeping rhizome giving rise to an erect, sometimes decumbent in the lower half, terete stem carrying 4 to 6, obliquely lanceolate, obscurely subacuminate, petiolate base leaves that blooms in the later spring on an erect, terminal, finely pubescent, 12.64" to 17" [31.6 to 42.5 cm] long, peduncle 10.64 to 14.8" " [26.6 to 37 cm] long, provided with 6, scattered to lax sheathing bracts, rachis 2 to 2.2"" [5 to 5.5 cm] long, laxly to sublaxly many flowered inflorescence with lanceolate, acute, longer than the ovary floral bracts and carrying externally pubescent, white flowers.

"This species is similar to its Colombian congener Microchilus globosus but it has a lax to sublaxly (not subdensely) flowered inflorescence, flowers with pubescent (not glabrous) sepals, a shorter, .1 versus .12" (2.5 vs. 3 mm) labellum hypochile, and shorter, .06 versus .08" (1 .5 vs. 2 mm) epichile lobules. The differences between M. microcalcar and Microchilus frontinoensis is M frontinensis having flowers with an obovoid (not subglobose) spur, a broader, .06 versus .04" (1.5 vs. 1 mm) dorsal sepal, and a larger labellum hypochile, .0836 x .076" versus .1 x .064" (2.9 x 1 .9 vs. 2.5 x 1.6 mm) " Ormerod 2008

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ;

* Harvard Pap. Bot. 13: 80 Ormerod 2008

Harvard Pap. Bot. 13: 79 fig 32 Ormerod 2008 drawing fide

Materials to the Orchid Flora of Colombia Vol 1: 262 Szlachetko & Kolanowska 2017 drawing fide;

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