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Bulbophyllum ligulifolium

Bulbophyllum ligulifolium

Bulbophyllum ligulifolium J.J.Sm., Nova Guinea 18 (1935) 68

Type: Docters van Leeuwen 10324 (holo L; iso BO)

Rhizome creeping, branched, sparsely rooting, terete, when dried 0.16-0.2 cm diam. Pseudobulbs c. 1-1.4 cm apart, elongated, when dried petiole-shaped, c. 1.7-2 cm long; 1-leaved. Leaf very narrow, sublanceolate-linear, coriaceous, c. 14-16 by 0.9-1.1 cm; base gradually weakly narrowed into a channelled petiole; apex narrowed, subacute, thickly laterally compressed-apiculate; midrib above grooved, underneath obtusely prominent. Inflorescence producing several flowers in succession, from the base of the pseudobulb; peduncle thin, c. 16.5 cm long, the basal part with c. 4 small, tubular sheaths; rachis flexuose, punctate, c. 2.5 cm long, the internodes 0.3-0.33 cm long. Floral bracts distichous, obliquely funnel-shaped, slightly incurved, strongly keeled, the keel long beyond the apex extended, laterally compressed, acute, punctate, dorsally 0.5 cm long. Flowers up to 9 or more, c. 2 by 1.9 cm. Median sepal patent, slightly incurved, obtusely angled, channelled with convex sides, elongate-5-angled, at 1/3 above the base gradually narrowed, acute; the very base on either side with a tooth small, 7-nerved, more than 2 by 0.63 cm at 1/3 above the base. Lateral sepals inserted a bit remote from the median one, widely patent, incurved, above subparallel, cymbiform-conduplicate, strongly keeled, the keel extended beyond the apex, laterally compressed, when flattened obliquely oblong, to the top narrowed, acute, posterior margins above the base making an obtuse angle, 7-nerved, c. 2.4 by 0.86 cm. Petals very small, the upper part recurved, long subulate-contracted, acute, convex, 3-nerved, 0.5-0.53 by 0.24 cm at the base. Lip mobile, parallel to the column and distinctly longer, slightly recurved, oblong, fleshy, above convex, c. 1.8 by 0.8 cm; base the sides thick patent broadly channelled with 2 small, longitudinal, closely placed keels separated by a narrow channel narrowly linear; basal part concave, in front with 2 oblique, transverse, thick, irregular keels, delimited by the margins, where meeting the keels continue parallel, separated by a small channel to 3/5 part above the base of gthe lip; to the top somewhat dilated, shortly obtuse acuminate; underneath in basal half thickly keeled, with a small longitudinal channel. Column moderately long, straight, dorsally convex, margins above the base with a backwards pointing tooth, including the anther 0.67 cm long; clinandrium hollow, transversely semiorbicular; stelidia very small, triangular, with a small, obtuse tooth on the posterior margin. Anther cucullate, in front view rounded-quadrangular; connective longitudinal, thickly gibbose, 0.14 cm wide. ; rostellum transverse, underneath convex; stigma large, concave, quadrangular, its base extended in 2 tails separated by a broadly rounded sinus, with the apex of the teeth excurrent above the base of the column; column-foot making an acute angle with the ovary, broadly linear, truncate, 0.68 cm long, its apex slightly incurved. Ovary pedicellate, 6-grooved, furfuraceous-punctate, 0.93 cm long, 0.2 cm above the base articulate. (After Smith, 1935)

Flower yellow striped violet inside. Lip orange-yellow.

Epiphyte in lowland forest; 250 m.

Malesia (New Guinea).

Papua (Indonesia); see map

Distribution of Bulbophyllum ligulifolium in New Guinea

Warm growing epiphyte.


  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Bulbophyllinae
  • Genus Bulbophyllum
  • Section Intervallatae
  • Species Bulbophyllum ligulifolium

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Bulbophyllum ligulifolium

Bulbophyllum ligulifolium J.J.Sm., floral analysis, drawing J.J. Smith, from Docters van Leeuwen 10324

Bulbophyllum ligulifolium

Bulbophyllum ligulifolium J.J.Sm., column and lip, drawing J.J. Smith, from Docters van Leeuwen 10324

Bulbophyllum ligulifolium

Bulbophyllum ligulifolium J.J.Sm., herbarium sheet, Docters van Leeuwen 10324 (isotype specimen BO)