Liparis laurentii Hermans & Nusbaumer

in Kew Bulletin 1:75 (2020).

Répartition

Madagascar.

Description

[446] Small scrambling to ascending terrestrial plant of 2 – 3 growths, up to 9 cm high, on a short rhizome, roots flexuose, somewhat woolly, c. 1 mm diam. Pseudobulbs slender, ascending, tubular, more or less thickened towards the base, 20 – 45 × 5 – 10 mm, dark green, entirely enveloped by 2 – 3 long brownish papery attenuate sheaths, strongly ridged and with a few dark brown specks, the upper one caudate, up to 23 × 7 mm, with a single leaf at the apex. Leaf somewhat fleshy, persistent on the older pseudobulbs, broadly ovate, acute, rounded to subcordate at the base, with a 1 – 2 cm sheathing petiole, blade leathery and rigid, pale green, with several darker veins, 3.1 – 7.5 × 2.5 –4.5 cm. Inflorescence erect from the apex of the pseudobulb, up to 9 cm long, carrying up to 5 flowers but generally fewer. Peduncle partly enveloped by theleaf petiole and with 1 – 2 bract-like sheaths, 5.1 – 9 × 3.2 – 4.6 mm. Rachis loosely racemose, the older flowers fading before the new ones open. Floral bracts lanceolate, somewhat cordate at the base, 3.5 – 6 × 0.9 – 3.1 mm. Flowers medium sized, c. 1.8 × 1.5 cm, facing upwards, the ovary and floral bracts pale whitishgreen, the petals and sepal brownish green, the lip pale green with the disk darker viridian, anther darker green. Pedicel and ovary slender, slightly winged, sometimes somewhat dentate, 10 – 16 × 1.1 – 2.1mm. Dorsal sepal erect, arching, the margins recurved, ligulate, acute, 7.2 – 10.3 × 1.1 – 1.8 mm. Lateral sepals falcate-oblong, obtuse, parallel with the lip, margins a little recurved, 5.1 – 9.8 × 3.2 – 4.8 mm. Petals spreading, curled upwards towards the apex, margins recurved, linear, 7.2 – 9 × 0.3 – 0.5 mm. Liptransversely elliptic to reniform, with small basal wings, the margin entire but the anterior tip emarginated with a small central lobule, base with two distinct hornlike calli, 4.1 – 6.5 × 6.1 × 7.8 mm. Column slightly arched towards the apex, wings long, membranous, rounded, 2.5 – 3.9 × 1 – 1.3 mm. Anther ovate with adistinct sharp beak upturned at the apex, sometimes a little verrucose on the exterior, remaining attached by a thin filament at the base after pollination, c. 2.2 × 0.8 mm. Pollinia ovate c. 0.4 × 0.3 mm. Fruit: young capsule ovoid, 7 × 4 mm, with six longitudinal bands including three more protruding, mature capsule and seeds unknown.


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