Glomera retusimentum J.J.Sm.

Glomera retusimentum J.J.Sm., Nova Guinea 18:26 pl.6 (1935)-Type: Docters van Leeuwen 11335 (holotype, BO spirits specimen 723.1)

Growth form Epiphyte, 60 cm long. Rhizome not seen. Roots long, filiform, flexible, glabrous. Stem long, in cross section elliptic, rooting, not branched, proliferously leafed, completely covered by leaf sheaths, when dried 0.25 cm thick, internodes 1.7-2.6 cm long. Leaf  lanceolate-linear, patent, coriaceous, narrowed towards the apex, midrib grooved above, slightly prominent below;  apex unequal 2 lobe, both lobe obtuse; lamina 2.25-9 cm long, 1-1.1 cm wide; sheath tubular, laterally compressed, in cross section narrowly elliptic, with longitudinal, thin, prominent nerves, minutely transversely warty, surpassing the internodes; apex toothed, with glabrous margin. Inflorescences terminal, 8-flowered, head-like, strongly nodding, slightly elongated, when young enveloped by a spathe. Spathe large, strongly concave, orbicular-ovate, apex obtuse, conduplicate, keeled, keel apiculate, when not flattened 1.1 cm long; floral bracts as large as spathe, orbicular, strongly concave, rather membranous. Flowers upright or upside down, 0.9 cm long. Median sepal incurved above the base, oblong, obtuse, dorsally below the apex long subulate-apiculate, 5-nerved, 0.95 cm long, 0.35 cm wide. Lateral sepals deeply fused, 5-nerved, obliquely falcate-triangular, when flattened the whole synsepal suborbicular, 0.7 cm long, 0.75 cm wide, free apex obliquely  rounded triangular, 0.1 cm long, obtuse, dorsally below the apex long subulate-apiculate, free apex including mucro 0.15 cm long; mentum saccate, pointing backwards, appressed to the ovary, shortly broadly retuse bilobulate, 0.17 cm long. Petal  incurved at base, obliquely sub spathulate-oblong, apex rounded-truncate, 5-nerved, concave, 0.95 cm long, 0.38 cm wide. Lip basal part adnate to the column, shortly saccate, in total 0.45 cm long, to the apex of ovary 0.38 cm long, adnate part 0.06 cm long, blade separated from the column at an almost right angle, slightly surpassing the column, somewhat recurved, base separated from spur by conspicuous transverse rib, when flattened transversely quadrangular, basal angles rounded in the middle, almost obtuse, 0.23 cm long, 0.26 cm wide; epichile truncate; hypochile shortly narrowed, spurred; spur pointing backwards, making obtuse angle with ovary, shorter than ovary, large, obliquely elliptic-conical, slightly laterally compressed, obtuse, 0.2 cm long. Column in basal third adnate to the lip, dorsally convex, 0.23 cm long; clinandrium hollow, triangular, back wall equilaterally trapeziform, apex denticulate; stelidia obliquely triangular, subulate-acuminate, front margins rounded-dilated, back margin minutely denticulate. Anther cucullate, orbicular, 0.13 cm wide, apex thin marginate and retuse, base conical-gibbose, dorsally grooved; pollinia 4, compressed, obliquely obovate; rostellum porrect, as long as the stelidia, broad, broadly retuse, shortly rounded-bilobulate; stigma lower margin forming broadly rounded bilabiate structure; viscidium triangular falcate tooth. Ovary 6-grooved, 0.63 cm long. Capsule not seen.

Distribution –Indonesia.

Habitat and Ecology - Epiphyte in lowland forest. Altitude 100 m. Flowering seasons not known.

Notes -  1. Flowers white with an orange lip.

2. The epithet retusimentum refers to the retuse apex of the mentum.

3. Specimen observed: Docters van Leeuwen 11335.