Habenaria pinnatipartita

Habenaria pinnatipartita J.J.Sm., Nova Guinea 18 (1935) 9, pl. 3, 1

Type: Docters van Leeuwen 10935 (holo L)

Stem erect, elongated, rooting at the base, 77 cm long, in the basal part for 41 cm covered with tubular sheaths, upper part with rather distant leaves. Leaves about 10, lanceolate, gradually sharply acuminate, towards the base gradually narrowed, sessile, midrib prominent below, when dried membranous, up to 19.5 cm long, 3.5 cm wide; sheaths tubular. Inflorescence erect, many-flowered, peduncle 10 cm long, in upper part with a few foliaceous scales which decrease in size and grade into the bracts, rachis (immature seen) more than 14 cm long. Floral bracts appressed, as long as the flowers, at the base ovate-oblong, gradually long caudate-acuminate, concave, 3-nerved, 2.7 cm long, 0.55 cm wide. Flowers patent, 2.15 cm long, 1.6 cm wide. Median sepal erect, strongly concave, apex recurved, ovate, 0.8 cm long, 0.5 cm wide, apex shortly obtusely contracted, nerves 3, dorsally prominent. Lateral sepals reflexed, concave, 0.97 cm long, 0.48 cm wide, margin more or less convex, apex somewhat recurved, obliquely ovate-triangular, narrowed towards the apex, obtuse, shortly conical-apiculate, nerves 3, dorsally prominent. Petals deeply bipartite, contracted at the base, above the base about 0.3 cm wide, 2-nerved, front nerve forked above the base, dorsal partition together with the median sepal forming a hood, obliquely oblong-triangular, somewhat falcate, towards the apex gradually narrowed, acute or narrowly obtuse, back margin above the base somewhat rounded-dilated, near the base of the lip 0.8 cm long, above the base about 0.3 cm wide, the other partition widely patent, above the base falcate-ascending, obliquely broadly linear, long filiform-produced, along the front margin provided with a similar lobule which is more or less shorter and sometimes with an additional tooth-like lobule, when flattened 1 cm long, above the base 0.1 cm wide. Lip spurred, tripartite, claw quadrangular, flat with two inconspicuous longitudinal grooves, 0.2 cm long, 0.24 cm wide, median partition above the base obtusely curved upwards a little, porrect, linear, obtuse, convex, 0.86 cm long, at the base about 0.2 cm wide, lateral partitions deflexed, with the median partition making an acute angle, irregularly obliquely linear, filiform-produced, 0.85-1 cm long, back margin frequently provided with 3 patent, unequal, filiform lobules and sometimes the front margin also with a very short lobule; spur pointing downwards, making an acute angle with the ovary, somewhat incurved, club-shaped, subterete, obtuse, inflated part dorsally with an obtuse longitudinal rib, 1.63 cm long. Column erect, short, dorsally 0.35 cm long, staminodes conspicuous, laterally compressed, angular-subelliptic, strongly verrucose. Anther apex bilobed, thecae rather close together, parallel, laterally compressed, about 0.4 cm long, clavate, anther channels somewhat falcate-incurved. Rostellum with erect mid-lobe, extending to about the middle of the anther, rounded-triangular, fleshy, the legs slightly surpassing the anther-channels which are provided with a longitudinal groove. Stigmatophores porrect, surpassing the rostellum arms, obliquely oblong, obtuse, 0.27 cm long. Ovary at apex subrostrate-narrowed, 6-ribbed, somewhat recurved, 1.6 cm long; pedicel short, twisted, 0.4 cm long. (After Smith, 1935)

Colours: Flower green.

Habitat: Terrestrial in lower montane forest. Altitude 1500 m.

Flowering time in the wild: October.

Distribution: Malesia (New Guinea, endemic).

Distribution in New Guinea: Papua (Indonesia).

Cultivation: Intermediate growing terrestrial, keep in shade.