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Bulbophyllum aundense

Bulbophyllum aundense

Bulbophyllum aundense Ormerod, Orchadian 14 (2005) 563

Synonyms:

  • Bulbophyllum barbatum P.Royen, Alp. Fl. New Guinea 2 (1979) 211, fig. 76 (non Barb.Rodr.)
    - Type: Balgooy, van 508 (holo CANB; iso L); para: NGF (Vandenberg) 38538; ANU (McVean & Wade) 7022
  • Bulbophyllum aundense Ormerod, Orchadian 14 (2005) 563

Epiphytic, 6-20 cm high, pendent or creeping. Rhizome elongate, branched, glabrous, between the pseudobulbs covered with 315 mm long bracts, these obliquely truncate and obtuse, manynerved, scattered warty, in older parts of rhizome falling apart into separate fibres. Pseudobulbs glabrous, 1-leaved, relatively close together, parallel to rhizome or at a small angle, cylindric-ovoid, 7-20 by 1.5-3 mm, narrowed at base, ribbed. Leaves patent, coriaceous, glabrous but margins irregular papillate-erose, linear, linear-spathulate, or narrowly elliptic, 12-45 by 2-6 mm, acute or obtuse, midrib grooved above, crested below. Inflorescences 1-flowered, solitary. Peduncle glabrous, 3-7 mm long, at base with tubular bracts, 4.5-15 by 2.5-3 mm, acute, crested, in higher parts with 3 bracts, lowest suborbicular, 4 by 3 mm, acute. Bracteoles tubular, 5.5 by 2.5 mm, obliquely truncate, acute, crested. Pedicels glabrous, 3-3.5 mm long. Ovary glabrous, ovoid or sigmoid-claviform, 5.5-6.5 by 2-2.5 mm, 6grooved. Median sepal glabrous, elliptic-obovate, 6.5-9 by 3-5 mm, acute. Lateral sepals glabrous, obliquely ovate, 7-10 by 5-6.5 mm, connate, in basal part forming a rounded mentum, subulate-acuminate at tip, 3nerved. Lateral petals glabrous or finely papillate along apical half of margin, obliquely oblong-elliptic, 6-7 by 2.2-2.5 mm, obtusish or acute, 1-nerved. Lip densely barbate on underside only, linguiform, 6-6.5 by 2-2.5 mm, slightly curved, fleshy, basal margins membranous and curved upwards, obtusely acuminate at tip, crested above, retuse at base. Column short, conoid, 2 by 1 mm, apical margin 3-tipped. Anther papillate along apical part, otherwise glabrous, cucullate with upcurved lateral margins, 1.2 by 1.3 by 0.7 mm, rounded, base retuse. Column-foot compressed-cylindric, 3-4 mm long, straight but curved forward at tip, widened and 2-lobed at tip. Capsule not seen. (After van Royen, 1979)


Pseudobulbs golden yellow or light brownish yellow. Flower white or pale yellow.

Epiphyte in subalpine vegetation; 3570 m.

Malesia (New Guinea).

Papua New Guinea; see map

Distribution of Bulbophyllum aundense in New Guinea

Cool growing epiphyte, requires light position.

May.

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Bulbophyllinae
  • Genus Bulbophyllum
  • Section Polymeres
  • Species Bulbophyllum aundense

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Bulbophyllum aundense

Bulbophyllum aundense Ormerod, photo Graham Corbin, flower, front view, in PNG, Mt, Wilhelm.

Bulbophyllum aundense

Bulbophyllum aundense Ormerod, photo Graham Corbin, in situ in PNG, Mt, Wilhelm.

Bulbophyllum aundense

Bulbophyllum aundense Ormerod, photo Graham Corbin, in situ in PNG, Mt, Wilhelm.

Bulbophyllum aundense

Bulbophyllum aundense Ormerod, photo Graham Corbin, flower, lateral view, from PNG, Mt, Wilhelm.

Bulbophyllum aundense

Bulbophyllum barbatum P.Royen, P. van Royen, drawing, plant habit and flower analysis, based on paratype ANU (McVean & Wade) 7022

Bulbophyllum aundense

Overview picture of Bulbophyllum barbatum P.Royen

Bulbophyllum aundense

Bulbophyllum barbatum P.Royen, J.J. Vermeulen, sketch, flower analysis, based on paratype ANU (McVean & Wade) 7022

Bulbophyllum aundense

Bulbophyllum barbatum P.Royen, herbarium sheet, van Balgooy 508 (isotype L)