Prev Taxon: Genus Bulbophyllum section Piestobulbon
Current Genus: Genus Bulbophyllum section Polymeres
Next Taxon: Genus Bulbophyllum section Schistopetalum
Bulbophyllum schistopogon
Bulbophyllum schistopogon J.J.Verm., Schuit. & de Vogel, Lankesteriana 20 (2020) 309, fig. 7
Type: Reeve 1016 (holo L 1495886; iso CANB, E, K, LAE, NSW).
Synonyms:
Rather small epiphyte. Roots spreading. Rhizome creeping, 0.18–0.25 cm diam., new shoot from the basal node of the pseudobulb; rhizome scales thin, somewhat persistent. Pseudobulbs 0.1–0.9 cm apart, distinct, ovoid(- cylindrical), 1.1–2.1 by 0.4–0.7 cm; apex hardly angular. Leaf: petiole 0.5–1.3 cm long; blade obovate, 3.0–7.0 by 0.5–0.9 cm, index 5.0–12.8; apex obtuse. Inflorescences single or several together, 5–8 cm long, 1-flowered; peduncle 1.8–3.3 cm long; scales c. 2, basal; floral bracts 0.4–0.7cm long. Flowers: pedicel and ovary 2.1–3.6 cm long; basal node 0.26–0.4 cm above the floral bract attachment. Median sepal free, recurved, ovate(-triangular), 0.9–1.1 by 0.25–0.3cm, index 3.2–3.7; margins entire, glabrous to minutely papillose; surface glabrous; apex acute; 3-nerved. Lateral sepals free, recurved, (ovate-)triangular, 0.8–1.2 by 0.22–0.35 cm, index 3.0–4.6; margins glabrous; apex acute; 3-nerved. Petals porrect, ovate-triangular, 0.26–0.32 by 0.1–0.19 cm, index 1.6–3.0; margins entire, minutely papillose; surface glabrous; apex obtuse; 1-nerved. Lip slightly recurved near base, elliptic, 0.75–0.9 by 0.18–0.22 cm, index 3.7–4.5 (without spreading); margins entire, densely hirsute near the base, glabrous in the top half; apex rounded to obtuse; thick; upper side concave close to the base, this cavity bordered by two short, converging ridges with a glabrous crest, upper surface otherwise about flat and with two densely hirsute patches towards the margins in the basal 2/5–1/2 of its length, slightly convex and glabrous elsewhere; underside slightly convex near the base, slightly concave elsewhere; surface glabrous. Column including stelidia 0.16–0.23 cm long; column foot at the top widened, with spreading, obtuse lateral teeth; stigma about circular, near the base distinctly protruding from the column face; stelidia sigmoid, narrowly triangular, 0.08–0.13 cm long, the top part subulate, acute; pollinia 4, the inner two more than half as long as the outer.
(after Vermeulen et al., 2020)
Sepals purple with darker veins. Petals and lip dark purple, hairy patches white.
Epiphyte, no further details. Elevation 2400 m.
Malesia (New Guinea).
Papua New Guinea (Southern Highlands Province), see map
Cool growing epiphyte.
January or April.
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Bulbophyllinae
- Genus Bulbophyllum
- Section Polymeres
- Species Bulbophyllum schistopogon
Bulbophyllum schistopogon J.J.Verm., Schuit. & de Vogel belongs in series B.
Bulbophyllum schistopogon J.J.Verm., Schuit. & de Vogel shares the distribution of hairs on the upper side of the lip with Bulbophyllum subium J.J.Verm., Schuit. & de Vogel, B. galliaheneum Van Royen, and with B. odontopetalum Schltr.; it differs in the much longer, sigmoid stelidia (versus short and upturned stelidia) and the acute sepals (versus sepals long acuminate).
Bulbophyllum schistopogon J.J.Verm., Schuit. & de Vogel is in general shape similar to Bulbophyllum dischorense Schltr. and B. dschischungarense Schltr., it differs in the presence of hairy patches on the upper side of the lip.
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Bulbophyllum schistopogon
Bulbophyllum schistopogon J.J.Verm., Schuit. & de Vogel, plant habit, photo © Tom Reeve, based on Reeve 864 from Papua New Guinea, Southern Highlands Prov.
Bulbophyllum schistopogon
Bulbophyllum schistopogon J.J.Verm., Schuit. & de Vogel, drawing © J.J. Vermeulen, in J.J.Verm., Schuit. & de Vogel, Lankesteriana 20 (2020) 309, fig. 7, from Reeve 1016 (herbarium)