OrchideenJournal

Publisher: V.D.O.F. Vol. 9 · 1 Vereinigung Deutscher Orchideenfreunde e.V. 2021 Parsons Foto: © Ron

Bulbophyllum cophocropion J.J. Verm. & Schuit.

Contents: Page 1 – 6 O Bulbophyllum cophocropion (Orchidaceae), ISSN-Internet 2195-772X a new species from Papua New Guinea May 5th 2021 OrchideenJournal Internet | Vol. 9 · 1

Bulbophyllum cophocropion (Orchidaceae), a new species from Papua New Guinea Jaap J. Vermeulen & André Schuiteman 3

Summary: A new lowland species of Bulbophyllum of section Codonosiphon from Papua New Guinea is described as Bulbophyllum cophocropion.

Keywords: PNG, Bulbophyllum cophocropion

Published by: VDOF e.V. Mittelcarthausen 2 58553 Halver Germany email: [email protected] Editor in chief: Roland Schettler

Date of Publication: May 5th , 2021, 9 p.m. CET

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Bulbophyllum cophocropion Jaap J. Vermeulen & André Schuiteman (Orchidaceae), a new species from Papua New Guinea

During his travels on the island of New Botanic Garden in Port Moresby. Sev- foot. Several species of sect. Codono- Guinea, Ed de Vogel of Leiden Uni- eral of his plants were shared with a siphon have relatively large, attractive versity made extensive scientifi c col- Leiden team who were also in PNG at fl owers and are well worth cultivating. lections of orchids. These collections, that time and these were later cultivat- along with those of others, yielded an ed under the expert care of Art Vogel. Bulbophyllum cophocropion immense amount of data which, to- One of the orchids collected by Wayne J.J. Verm. & Schuit., spec. nov. gether with information already pub- Harris is the source of the new spe- lished or stored in herbaria, was used cies described below. This species be- Type: Papua New Guinea, Southern for a project to assemble a well-in- longs to section Codonosiphon, which Highlands Province, Libano River, De formed fi rst census of the New Guin- is one of the larger sections of Bulbo- Vogel et al. s.n. (leg. W.K. Harris ea orchid fl ora. This was initially pub- phyllum with about 80 species. More 1735), L alc. 22768 (holotype L). lished on CD-ROM by ETI, Amsterdam, than 95% of these are endemic in and the Nationaal Herbarium Neder- New Guinea. The species of this sec- Diagnosis:Among species of section land, and is now freely accessible on tion have 1-fl owered infl orescences, a Codonosiphon with a creeping rhi- the website http://www.orchidsnew- pedicel node some distance from the zome B. cophocropion is identifi ed guinea.com/ fl oral bract, a slender, curved, trans- by the combination of distant, quad- parent column with a basal swelling rangular pseudobulbs and distinctly In 2003, the late Wayne K. Harris forming a short foot, and a relatively downwards geniculate petals with a made a collection of living orchids in long lip, usually not much shorter than rounded apex. The only other medium- the Mount Bosavi area of Papua New the sepals, which is often, but not al- sized, creeping Codonosiphon with Guinea (PNG) for the National Capital ways, rigidly attached to the column- distant pseudobulbs is B. rectilabre

Bulbophyllum cophocropion J.J. Verm. & Schuit. Bulbophyllum cophocropion J.J. Verm. & Schuit. de Vogel de Schuiteman Foto: © E. Foto: © A.

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Bulbophyllum cophocropion J.J.Verm. & Schuit., a, b. Habit; c. Flower analysis, from left to right: median sepal, petal, lateral sepal; d. Petal; e. Lip, left: adaxial side, right: abaxial side; f. Column and lip, lateral view; g. Column, left: fron- tal view, right: lateral view; h. Anther, left: adaxial view, right: abaxial view; i. Pollinia, left: two pairs, right: a single pair. Drawn by © J.J. Vermeulen, from L alc. 22768 (a, c—i) and Cootes s.n. (b).

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J.J.Sm., which differs from B. copho- where deeply concave, with two longi- cropion in its only slightly falcate, sub- tudinal ridges in the cavity, in the api- acute petals and porrect stelidia, and cal half with the edges of the lip fold- in its lip which is distally only slightly ed over the cavity and almost touch- concave on the abaxial side. Another ing. Column including stelidia 3.5 – 3.7 species with somewhat similar fl owers mm long, curved, stigma narrow, dis- but close-set pseudobulbs is B. trachy- tinctly protruding at its base, foot dis- glossum Schltr., which differs in only tally widened, without lateral teeth. slightly downwards falcate, acute pet- Stelidia upwards falcate, narrowly tri- als and the papillose adaxial side of angular, 1.0 – 1.5 mm long, acute, low- the lip. er margin with a large, patent, deltoid, obtuse tooth near the base, midvein Description: Creeping or straggling, near the base with a high, patent keel medium-sized epiphyte with spread- with rounded profi le. Anther abaxially ing roots which sprout mainly below with a wide, rounded, papillose crest, the pseudobulbs. Rhizome 1.8 – 3.0 front deltoid, obtuse, somewhat con- mm diam., sections between pseu- cave. Pollinia 4, rather fl at; inner pair dobulbs 1.8 – 3.5 cm long, rhizome slightly shorter than the outer pair. scales persistent. Pseudobulbs dis- tinct, (obliquely) erect, ovoid(-coni- Colours: Leaves sometimes with a cal), 1.1 – 2.3 × 0.8 – 1.3 cm, distinct- glaucous sheen on the adaxial sur- ly but obtusely 4-angled with some- face. Sepals white, near the base what concave sides. Leaf: Peti- with a large, transverse dark purple- ole 1.3 – 5.0 cm long; blade elliptic, red blotch almost spanning the width 7.3 – 41 × 0.8 – 1.8 cm, ratio length/ of the sepal, and with thin purple-red width 8.0 – 45; acute. Infl orescence veins. Petals white proximally, black- 10 – 15 cm long, 1-fl owered. Pedun- ish purple distally, vein red-purple. cle 3.7 – 6.0 cm long, scales c. 2, sub- Lip white with small red-purple spots basal. Floral bracts 5.7 – 8.0 mm close to the base, dark red-purple dis- long, pedicel node 4.5 – 8.0 mm dis- tally, pink-purple in between. Column tant from the fl oral bract attachment. white. Flowers:Pedicel plus ovary 40 – 65 mm long. Median sepal spreading Ecology: Tropical lowland rainforest to refl exed, oblong to ovate, 17 – 20 with moderately open to closed cano- × 5.0 – 5.4 mm, ratio length/width py, on volcanic alluvium. Alt. 250 m. 3.1 – 3.8; acuminate, margins entire; glabrous, 3-veined. Lateral sepals as Distribution:Papua New Guinea, the median but slightly oblique, ob- Southern Highlands Province, Libano long to ovate-triangular, 19.2 – 20.5 River (Type); Papua New Guinea, local- × 5.0 – 6.6 mm, ratio length/width ity unknown (Cootes s.n., NSW; pho- 3.1 – 3.9. Petals downwards genicu- tographs without preserved material late, with the apical two thirds almost from Ron Parsons, David Banks). at right angles to the basal third, ob- long with a widened base, 3.0 – 3.7 × c. Derivation of name. The name alludes 1.7 mm at the base, ratio length/width to the sickle-shaped, obtuse petals: 1.7 – 2.2; rounded, margins entire; ‘țȦijȩȢ’ (Gr.), ‘obtuse’, and ‘țȡȫʌȚȠȞ’ glabrous, distally slightly thickened, (Gr.), a sickle. 1-veined. Lip porrect, elliptic, oblong towards base and apex, 17.5 – 18.2 × 4.5 – 5.8 mm, ratio length / width 3.1 – 3.9 (without spreading); round- ed, margins obtusely auriculate close Jaap J. Vermeulen to the base, entire; glabrous, thick and Jk Art and Science, Lauwerbes 8, 2318 of spongy structure; adaxially con- AT Leiden, The Netherlands cave close to the base, distinctly con- Email: [email protected] vex elsewhere and swollen half-way along its length, bilaterally fl attened André Schuiteman and with coarsely rugose surface in Orchid Herbarium, Royal Botanic Gar- the distal third; abaxially convex in dens, Kew, Richmond, Surrey, TW9 the basal third of its length, else- 3AB, United Kingdom

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