Species Information - Bulbophyllum trivenosum

Bulbophyllum trivenosum J.J.Verm., Schuit. & de Vogel, Lankesteriana 20(3) (2020) 317, fig. 11

Type: LAE (Katik & Kairo) 64395 (holo L; iso LAE, NSW).

Synonyms:

Small epiphyte. Roots spreading. Rhizome creeping, 0.08—0.1 cm diam., new shoot arising from the basal node of the pseudobulb; rhizome scales thin, withering soon. Pseudobulbs distinct, 1.0–4.0 cm apart, ovoid, 0.95–1.1 by 0.15–0.2 cm, (?)angular. Leaf: petiole 0.13–0.20 cm long; blade elliptic-oblong, 1.0–1.7 by 0.2–0.4 cm, index 3.8—8.5; apex obtuse. Inflorescences single or a few together, c. 3.5 cm long, 1-flowered; peduncle c. 1.9 cm long; scales c. 2; floral bracts c. 0.2 cm long. Flowers: pedicel and ovary c. 0.95 cm long; basal node c. 0.12 cm above the floral bract attachment. Median sepal free, recurved, elliptic, c. 0.45 by 0.18 cm, index c. 2.5; margins entire, minutely papillose; apex acute-acuminate; glabrous; 3-nerved. Lateral sepals free, recurved, triangular, c. 0.44 by 0.2 cm, index 2.1; margins entire, glabrous; apex acute; glabrous; 3-nerved. Petals porrect, oblong, c. 0.21 by 0.1 cm, index c. 2.1; margins entire, minutely papillose; apex rounded; surface glabrous; 3-nerved. Lip slightly curved, ovate-oblong, slightly constricted at c. 1/3 of its length, c. 0.28 by 0.08 cm, index c. 3.5 (without spreading); margins entire, papillose at c. 1/3 of its length, otherwise glabrous; apex obtuse; thick; upper side concave near the base, slightly concave to the top; surface glabrous; underside with hardly a median furrow, convex, papillose but glabrous near base and apex. Column including stelidia c. 0.17 cm long; column foot widened, with slight, patent, obtuse lateral teeth; stigma narrowly elliptic with the basal edge slightly protruding; stelidia slightly downwards falcate, narrowly triangular, subulate to the top, c. 0.1 cm long, acute; pollinia not seen.
(after Vermeulen et al., 2020)

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