Bulbophyllum katjae J.J.Verm., Schuit. & de Vogel, Males. Orchid J. 21 (2018) 32
Type: Leiden cult. 20031521 (Harris 1470) (holo L)
- Bulbophyllum cerinum auct. non Schltr.: Wood (1983): 73, specimen Reeve & Rees 407 (K, LAE).
Epiphytes. Rhizome 0.4–0.8 cm diam.; rhizome scale leaves caducous, only few thin fibers remaining. Pseudobulbs 1.2–1.5 cm apart, (obliquely) erect, ovoid, 2.0–4.5 by 1.3–2.2 cm, rounded in section, with age wrinkling with numerous longitudinal grooves. Leaf petiole 1.7–3.8 cm long; blade elliptic to obovate, 11.0–24.0 by 2.0–6.4 cm, index 3.2–7.8; apex acuminate. Inflorescences 6–11 cm long, solitary to few in a fascicle, 1-flowered; peduncle 2.4–4.5 cm long; scale leaves 2–3, the longest 0.9–0.95 cm long; floral bracts 1.05–1.25 cm long. Pedicel and ovary 0.13–0.35 cm long; basal node 2.0–0.4 cm above the floral bract attachment. Flower not opening widely. Median sepal free, c. porrect to recurved, ovate-triangular, often slightly drawn out towards the apex, 1.9–2.8 by 0.5–0.93 cm, index 2.8–4.0, rather thick, thicker towards the apex; margins entire; apex acute; glabrous; c. 9-nerved. Lateral sepals as the median sepal but slightly oblique, 1.9–3 by 0.65–1.08 cm, index 2.1–3.5. Petals near their base adnate to the column, porrect, triangular, 0.39–0.55 by 0.13–0.18 cm, index 2.6–3.4, rather thin; margins entire; apex acute; glabrous; 1-nerved. Lip about halfway recurved, c. ovate in outline, 0.39–0.48 by 0.3–0.34 cm, index 1.3–1.6 (without spreading) , thick; margins entire; above near the base slightly concave, with 2 low, rounded ridges which gradually emerge in the basal half of the lip, then run c. parallel along the length of the lip enclosing a shallowly concave area to just short of the apex, where they merge into the convex apical part of the lip; below in the basal half of the lip with a median ridge with a rounded crest and a thin, shallow median groove; apex obtuse; glabrous. Column including stelidia 0.25–0.4 cm long; column foot not widened; stelidia porrect, triangular, 0.08–0.17 cm long, with acute apex; without a ridge along the nerves; stigma elliptic; upper margin near the base with a slight, deltoid, obtuse to acute tooth; anther with a rounded ridge, front drawn out into a rather thick, concave, ovate, rounded beak, with minutely papillose surface; pollinia 4, the inner pair slightly shorter than the outer pair.
(after Vermeulen, Schuiteman & de Vogel 2018)