Trichotosia gabriel-asemiana Mambrasar & Schuit., Reinwardtia 16 (2017) 107, fig. 1-2
Type: Mambrasar, M. & Santiha 97 (holo BO)
Synonyms:
Epiphytes, herbaceous. Roots numerous from the rhizome and especially from the basal part of the stem, branching, up to 4.5 by 0.1 cm; with root hairs. Rhizome slender, creeping, branching, 2-4.5 by 0.05-0.1 cm, covered with hairy scale leaves. Stems erect, patent or pendulous with ascending apex, terete, 4-8.5 by 0.1-0.2 cm; internodes 0.5-1.1 cm long, covered with leaf sheaths, with 10-15 leaves. Leaves distichous, subpatent, oblong to elliptic or narrowly obovate; higher ones larger, 1.4-1.7 cm by 0.4-0.8 cm, thick-coriaceous, rather densely covered in soft hairs c.1.5 mm long; margins decurved; apex acute. Inflorescence emerging laterally from the upper internodes of the stem, short, covered in soft hairs, 1-flowered; peduncle very short. Floral bract lanceolate, 0.6 by 0.3 cm, hairy like the leaves. Pedicel and ovary 0.1 cm long, densely hairy like the leaves. Flower not opening wide, maroon, 0.7 by 0.5 cm. Median sepal narrowly ovate, 0.3 by 0.1 cm; apex subacute; abaxially sparsely verrucose, pilose; 3-nerved. Lateral sepals obliquely broadly triangular-ovate, 0.4 by 0.4 cm; apex subacute; 3-nerved. Petals porrect, narrowly oblong, 0.3 by 0.1 cm, glabrous; apex obtuse; 1-nerved, with 2 branches above its base. Lip entire, narrowly oblong-ovate, 0.4 by 0.18 cm; the basal 0.22 cm fleshy, the apical part (epichile) concave and thinner textured, the transition between the fleshier basal part and the epichile resembling a ridge; abaxially rather sparsely pilose; 5-nerved; margin of epichile undulate near the base; apex obtuse, with a small, conical, abaxial callus. Column not described. Fruit not seen.
(after Mambrasar & Schuiteman, 2017)
Stems green to brown. Leaves green; hairs pale greyish brown. Inflorescence with pale greyish brown hairs. Flower maroon; sepals at the back with pale greyish brown hairs.
Epiphytes on trees in primary forest. Altitude 450 m.
Malesia (New Guinea, endemic)
Indonesia (Papua Barat Prov., Tambrauw Regency)
Warm growing epiphyte.
April
Trichotosia gabriel-asemiana is similar Trichotosia microphylla Blume and T. dalatensis by its small size, short leaves (less than 2 cm long), and solitary flowers with a conical callus on the underside of the lip near the apex, but differs from Trichotosia dalatensis in the sparsely pilose underside of the lip (versus glabrous) which is abruptly divided into a fleshy basal part and a thin upper part, without an adaxial callus (versus a glabrous, uniformly thick lip with a distinct callus), and from Trichotosia microphylla in the maroon flowers (versus yellowish green) with a smaller lip (0.4 cm long versus c. 0.9 cm) which is not pubescent on the underside and not abruptly divided into a fleshy basal part and a thinner upper part.
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