About Habenaria pantlingiana Kraenzl.
Habenaria pantlingiana Kraenzl. is a terrestrial herb that grows to a maximum height of around 70 centimeters. It has fleshy, oblong tubers that measure approximately 2–4 cm long and 1–2.5 cm wide. The stem is erect, green, cylindrical, and stout. The stem bears 6 to 8 leaves arranged spirally around its middle section, with 2 to 5 additional bract-like leaves above these. Each leaf has an oblong-lanceolate to obovate-lanceolate blade that is 10–15 cm long and 3–4.5 cm wide. The leaf base is attenuate, narrowing into an amplexicaul sheath; leaf margins are undulate, and the leaf apex is acute or acuminate, often slightly curved.
The inflorescence is a densely many-flowered raceme 4–12.5 cm in length. The persistent floral bracts are lanceolate, measuring 16–24 mm long by 2.5–4.2 mm wide, and they are typically as long as or longer than the ovary, with a long-acuminate apex. The flowers of this species are green.
The dorsal sepal is distinctly erect, lanceolate, concave, and long-acuminate, measuring 2.0–3.0 cm by 0.4–0.6 cm. The lateral sepals are reflexed, oblique, and linear, 1.8–2.5 cm by 0.3–0.5 cm, with a long-acuminate tip. The petals are deeply bilobed from the base, with divergent, filiform, tortuous lobes: the upper lobe measures 1.1–1.5 cm by approximately 0.3 cm, and the lower lobe measures 1.8–2.0 cm by approximately 0.3 cm. The labellum is trilobed from the base, 2.0–2.5 cm by about 0.7 mm, with filiform, tortuous lobes, and the mid-lobe is usually shorter than the lateral lobes. The spur is pendulous, cylindrical, and 1.5–2.0 cm long, which is roughly the same length as the ovary. The ovary is cylindrical, twisted, 1.7–2.2 cm long, and glabrous. Pollinia are oblong, viscidia are small and orbicular, and stigmas are club-shaped.
