Psilochilus steyermarkii Kolan. 2015 Drawing by Kolanowska, Naczk & Jaskula Herbarium-based studies on taxonomy, biogeography and ecology of Psilochilus (Orchidaceae)

LATER

Common Name Steyermark's Psilochilus [American Botanist in Venezuela 1900's]

Flower Size

Found in Venezuela on southeastern facing sandstone bluffs at elevations of 1095 to 1520 meters as a small sized, cool growing terrestrial with 4, broadly lanceolate to narrowly ovate, acute, shortly petiolate base leaves taht blooms in the later summer on an erect, rachis to 1.4" [3.5 cm] long, few flowered inflorescence with much shorter than the ovary floral bracts and carrying greenish flowers.

Closest to P physurifolius but P steyermarkii has triangular, lateral lip lobes and a prominent lip middle lobe which is slightly retuse apcially, P physurifolius on the other hand has the lateral lobes of the lip obliquely ovate and an inconspicuous mid-lobe which is rounded apically. P steyermarkii also has the apices of the lateral lobes of the lip extend to the basal 1/3 of the middle lobe while P physurifolius has lateral lobes that do not reach the base of the midddle lobe of the lip.

The form of the lip is reminiscent of P modestus but P steyermarkii has the lip three times longer than the width of the lip while P modestus has the lip only twice as long as the width of the lip with a short, but distinct claw and prominent, triangular, lateral lobes of the lip.

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ; Herbarium-based studies on taxonomy, biogeography and ecology of Psilochilus (Orchidaceae) Drawing fide

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