Bulbophyllum magnussonianum J.J.Verm., de Vogel & A.Vogel, Blumea 55 (2010) 281, fig. 3
Type: Leiden cult. 20081518 (holo LAE; iso L), from PNG, New Britain
Roots emerging scattered along the rhizome. Rhizome short, to 5 mm diam., sections between pseudobulbs up to 1 cm long, bracts including fibres somewhat persistent. Pseudobulbs ovoid, to 3 by 1.8 cm. Leaf with petiole up to 2 cm, blade ovate, up to 7 by 2.7 cm, index (length/width) 2.2-3.2; acuminate. Inflorescence c. 4 cm long, 1-flowered. Peduncle c. 1.8 cm long, bracts 3, the longest c. 7 mm long. Floral bracts tubular, c. 8 mm, acute. Flowers moederately opening. Pedicel and ovary c. 11 mm long, basal node on a c. 2.2 mm-long stump. Median sepal recurved distally, ovate, c. 10.5 by 3.5 mm, index c. 3; acute, margins entire, base broadly attached; rather thick, thick diatally, glabrous. Lateral sepals as the median but oblique, c. 11.5 by 4 mm, index 2.8-2.9. Petals fused to the column at their very base, porrect, elliptic-ovate, c. 3 by 0.7 mm, index c. 4.3; acute, margins entire; rather thin, glabrous. Lip recurved, ovate-triangular, c. 2.9 by 1.8 mm, index 1.6, acute-apiculate, margins entire; thick, glabrous; adaxially slightly concave proximally, with 2 low ridges starting near the margins, then converging, slightly spreading again, converging and merging into a slight median swelling; abaxially with a rounded median ridge. Column c. 2.8 mm long, stigma elliptic, basal margin not protruding, column foot without teeth. Stelidia porrect, triangular, c. 1.2 mm long, acute, with a slight tooth along the upper margin. Anther abaxially with a widepapillose crest, surface otherwise approx. glabrous, front margin drawn out into a rounded beak. Pollinia 4; approx. rhomboid, without appendage, the inner almost as long as the outer. (After Vermeulen et al., in press)
Colours: Flower white.
Distribution: Papua New Guinea.
Distribution in New Guinea: Papua New Guinea; see map 96-2362M.jpg.