Sunday, December 10, 2023

[Botany • 2017] Trichotosia gabriel-asemiana (Orchidaceae) • A New Species from Tambrauw, West Papua Province, Indonesia


Trichotosia gabriel-asemiana Mambrasar & Schuit., 

in Mambrasar et Schuiteman. 2017.

Abstract
A new species of orchid, Trichotosia gabriel-asemiana Mambrasar & Schuit. from West Papua, Indonesia, is described and illustrated, including a colour photograph.

Keywords: New species, Tambrauw, Trichotosia gabriel-asemiana

Trichotosia gabriel-asemiana Mambrasar & Schuit., spec. nov. 
Habit and flower. Photo taken from type location by YM Mambrasar (BO).

Trichotosia gabriel-asemiana Mambrasar & Schuit., spec. nov. 

Diagnosis. This species is similar to Trichotosia microphylla Blume and T. dalatensis by its slender, creeping rhizome, short leaves (less than 2 cm long), and solitary flowers with an abaxial, conical callus near the lip apex. Trichotosia dalatensis has flowers that are similar in size and in the maroon colour, but differs in having a glabrous, uniformly thick lip with a distinct adaxial callus, whereas T. gabriel-asemiana has a lip that is sparsely pilose abaxially and which is abruptly divided into a fleshy basal part and a thin  textured upper part, but lacks an adaxial callus. Trichotosia microphylla has larger, yellowish green flowers (lip ca. 9 mm long, vs. 4 mm in T. gabriel-asemiana), with the lip not pubescent abaxially, and not abruptly divided into a fleshy basal part and a thinner upper part.

Etymology. Named in honour of Gabriel Asem, Regent of Tambrauw Regency since 2011, who in 2015 declared Tambrauw regency a conservation zone.
 

Yasper Michael Mambrasar and Andre Schuiteman. 2017. Trichotosia gabriel-asemiana (Orchidaceae), A New Species from Tambrauw, West Papua Province, Indonesia. REINWARDTIA. 16(2); 107–110. DOI: 10.14203/reinwardtia.v16i2.3310