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Bulbophyllum cyrtophyllum

Bulbophyllum cyrtophyllum

Bulbophyllum cyrtophyllum J.J.Verm., Nordic J. Bot. 26 (2008) 137, fig. 5

Type: Jongejan cult. 1310 (holo L), PNG, Madang Prov.

Roots sprouting mainly below or near the pseudobulbs. Rhizome 1.8-2.2 mm in diameter, sections between pseudobulbs 1.3-2 cm long, creeping, bracts not persistent. Pseudobulbs 0.9-1.2 by 1-1.6 cm, somewhat distant, shortly ovoid to thickly lenticular. Leaves pendulous; petiole 4.5-6 cm long; blade 16-18 by 0.45-0.75 cm, index (length/width) 24-32, falcate, elliptic, acute. Inflorescence 2-2.5 cm long, 1-flowered; peduncle c. 0.9 cm long, erect to patent; non-floriferous bracts c. 3, the longest c. 3.5 mm long; floral bract tubular, 6-7 mm long, apiculate. Flowers widely opening. Pedicel-with-ovary c. 12 mm long, basal node on a c. 2.5 mm long stump. Dorsal sepal c. 22 by 3 mm, index 7-8, recurved to spreading, ovate, tapering distally, acute, margins entire, base rather broadly attached, thick, surface glabrous. Lateral sepals c. 23 by 4 mm, index 5.7by 6, free, spreading, lower margin sharply folded inwards, slightly erose, otherwise as the dorsal sepal. Petals c. 3 by 2 mm, index c. 1.5, recurved, strongly curved downwards, ovate-triangular, tapering distally and with a distinct, rounded lobe proximally along the lower margin, acute, margins entire, base narrowly attached, thin, surface glabrous. Lip c. 11.5 by1.8 mm, index c. 6.4, attached to the column-foot by a transverse, rather narrow area and partly mobile, gently curved over its entire length, ovate, acute, margins entire, thick and spongy; adaxially with a transverse ridge just above the area of attachment, with a c. 0.8 mm long concave area in front, distally abruptly passing into a more or less flat area, otherwise convex, with a somewhat corrugated surface; abaxially convex proximally, elsewhere with a shallow median furrow, surface glabrous. Column c. 3.5 mm long, gently curved, somewhat more so about half-way; stigma narrowly triangular, without keels inside, with a conical, obtuse callus well below it; foot widened into two thick more or less lateral calli just above the area of attachment; stelidia c. 0.9 mm long, deltoid-triangular, acute, with the upper margin distinctly erose, with a deltoid, apiculate tooth along the lower margin; anther-cap abaxially without a crest, surface finely papillose, front margin drawn out into a small, triangular, acute beak; pollinia 4, obovoid, the inner flat, somewhat enveloped by the recurved lateral sides of the outer; no appendages. (After Vermeulen, 2008)


Ssepals and petals white, densely spotted with dark red, petals also with a large dark red blotch proximally, lip yellow, finely spotted dark red, margins dark red near the base, column white, with tiny dark red dots.

Malesia (New Guinea).

Papua New Guinea; see map

Distribution map of Bulbophyllum cyrtophyllum
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Bulbophyllinae
  • Genus Bulbophyllum
  • Section Codonosiphon
  • Species Bulbophyllum cyrtophyllum

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Bulbophyllum cyrtophyllum

Overview picture of Bulbophyllum cyrtophyllum J.J.Verm.

Bulbophyllum cyrtophyllum

Bulbophyllum cyrtophyllum J.J.Verm., plant habit, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1310, (holotype)

Bulbophyllum cyrtophyllum

Bulbophyllum cyrtophyllum J.J.Verm., pseudobulbs and flowers, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1310, (holotype)

Bulbophyllum cyrtophyllum

Bulbophyllum cyrtophyllum J.J.Verm., flower, front view, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1310, (holotype)

Bulbophyllum cyrtophyllum

Bulbophyllum cyrtophyllum J.J.Verm., flower detail, centre of flower, front view, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1310, (holotype)

Bulbophyllum cyrtophyllum

Bulbophyllum cyrtophyllum J.J.Verm., flower detail, column and lip base, oblique front view, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1310, (holotype)

Bulbophyllum cyrtophyllum

Bulbophyllum cyrtophyllum J.J.Verm., Nordic J. Bot. 26 (2008) 137, fig. 5, J.J. Vermeulen, drawing, based on Jongejan cult. 1310 (holo L), PNG, Madang Prov.