Bulbophyllum Irianae and B. Adolinae (Orchidaceae: Dendrobiinae), Two

OrchideenJournal

Publisher: V.D.O.F. Vol. 6 · 5 Vereinigung Deutscher Orchideenfreunde e.V. 2018

Bulbophyllum irianae

Contents: ● Bulbophyllum irianae and B. adolinae (Orchidaceae: Dendrobiinae), two new species of sections Hoplandra and Peltopus from Indonesian New Guinea Page 1 – 13 ● Three new orchid species from ISSN-Internet 2195-772X the islands of Mindanao and Palawan, Philippines October 5th 2018 OrchideenJournal Internet | Vol. 6 · 5

Bulbophyllum irianae and B. adolinae (Orchidaceae: Dendrobiinae), two new species of sections Hoplandra and Peltopus from Indonesian New Guinea

André Schuiteman, Ed De Vogel, Charlie Danny Heatubun, Jimmy Frans Wanma, Filep Mambor, Daawia Suhartawan, Eline Hoogendijk 3

Summary: Two new species of Bulbophyllum are described as Bulbophyllum irianae and Bulbophyllum adolinae

Key words: Orchidaceae, Bulbophyllum irianae and Bulbophyllum adolinae, new species, Indonesian New Guinea

Three new orchid species from the islands of Mindanao and Palawan, Philippines

Derek Cabactulan, Miguel David De Leon, Reynold Pimentel and Jim Cootes 9

Abstract: A new Bulbophyllum species and a new Dendrobium species are proposed from the province of Bukidnon, Mindanao, and a new Dendrobium species from the island province of Palawan is also proposed.

Key words: Bulbophyllum pyrrosifolium, Dendrobium annemarieae, Dendrobium jyrdii, Bukidnon, Palawan, Philippines, new species.

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

Date of Publication: October 5th, 2018, 22:00 Uhr CEST

2 Internet | Vol. 6 · 5 OrchideenJournal Bulbophyllum irianae and B. adolinae (Orchidaceae: Dendrobiinae), two new species of sections Hoplandra and Peltopus from Indonesian New Guinea André Schuiteman, Ed De Vogel, Charlie D. Heatubun, Jimmy F. Wanma, Filep Mambor, Daawia Suhartawan, Eline Hoogendijk

With more than 2000 species, Bulbo- ble pollination syndromes and hence Section Hoplandra phyllum is at present by far the largest similar selection pressures, but noth- genus in the orchid family, Orchidace- ing is known about the pollinators of Bulbophyllum irianae De Vogel, ae. Although it is found throughout Bulbophyllum sections Hoplandra and Suhartawan, Hoogendijk & Hea- the tropics, some parts of the world Peltopus. tubun, sp. nov. Type: lndonesia, Ta- are much richer in Bulbophyllum spe- Another parallel between pleurothal- nah Papua, Papua Prov., Keerom Re- cies than others. The greatest hotspot lids and New Guinea Bulbophyllum is gency, Senggi district, Keerom cult. of species diversity for the genus is that both groups are most species-rich 20180091 (De Vogel, Suhartawan New Guinea. About 655 species of Bul- in humid montane forests, where the & Hoogendijk) (holotype Yayasan bophyllum are currently recorded from trees are covered with mosses and li- Pendidikan Alam Papua, temporari- this vast and under-explored island. chens. One of the new species, B. ado- ly stored in Universitas Cenderawa- Not surprisingly, new species are still linae, is such a cloud forest inhabitant; sih). regularly discovered here; two exam- the other, B. irianae, occurs in tropical ples are described in this paper. rainforest at much lower elevations. . In order to group related species to- Bulbophyllum irianae Watercolour drawing after the type gether, taxonomists have divided Bul- by Eline Hoogendijk bophyllum into c. 100 sections (Pridg- eon et al., 2014), of which 34 occur in New Guinea, including sections Hop- landra and Peltopus. It is interesting to note how many similarities there are between Bulbo- phyllum and the neotropical subtribe Pleurothallidinae (pleurothallids), especially the genera Acianthera, Dress- lerella, Lepanthes, Masdevallia, Ste- lis, Pleurothallis and Trichosalpinx. Both groups are exceptionally species-rich and are predominantly pol- linated by diptera (fl ies, mosquitos, gnats, etc.). The fl owers of these oth- erwise distantly related orchids can often look remarkably similar. In the case of Bulbophyllum sections Hop- landra and Peltopus, to which the two species here described belong, paral- lels can be drawn especially with species of Masdevallia. The superfi cial re- semblance is mainly due to the rela- tively large, often caudate sepals and insignifi cant petals in both. It is likely that the similarities refl ect compara-

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Bulbophyllum irianae. A. Habit; G. Median sepal, lateral view; H–J. al view; M. Column and column foot, B. Flower, oblique front view; C. Medi- Cross-sections through median sepal; front view; N. Anther, ventral and lat- an sepal; D. Petal; E. Lateral sepal; F. K. Ovary, column and lip, lateral view; eral view. Drawing after the type by Lip, view from above and below; L. Ovary and column, oblique later- Eline Hoogendijk.

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sepal porrect, 1.6 cm × 3.5 mm (index Bulbophyllum irianae. Flowers. 4.6), entirely glabrous; widened ba- Photo Eline Hoogendijk. sal part elliptic, thin and convex, 8 mm Diagnosis: Bulbophyllum irianae long (index 2.3), with entire margins, is most similar to B. obovatifolium nerves 3, raised, the lateral nerves with J.J.Sm., but differs in the apex of the one branch from near the base; apex a median sepal which is a long, solid, long, solid, terete, subulate awl 8 mm terete, subulate awl c. 0.8 cm long that long, which is adaxially in the lower is adaxially in the lower half fl at, has half fl at, without crest or keel, contin- no crest or keel, and narrows continu- uously and gradually narrowing in the ously and gradually into the very thin, very thin tip. Lateral sepals free, 8.2 cm narrowly acute tip (versus median se- × 6 mm (index 13.5), entirely glabrous pal keeled, acute, concave, the top half but basal half on inner side slightly ru- in the middle conduplicate, laterally gulose; basal part widened, oblique compressed); the lip from above slen- and somewhat falcate near the base, der narrowly triangular with a narrow- 2.5 cm long (index 4.2), long ovate, with ly acute apex and a smooth upper sur- upper margin minutely irregular, lower face without ornamentation (versus lip margin smooth, 4-nerved with the up- from above tongue-shaped with an ob- per 2 nerves and the lowermost nerve tuse apex and a channeled upper side branching at the very base; apical part with two ribs and a low small rib in the long drawn-out, narrow, 5.5 cm × 0.7– middle); lateral sepals c. 8.2 cm long 1 mm, with almost parallel margins, and 6 times twisted around each-oth- its basal part thin, the top 4 cm subu- er (versus lateral sepals c. 4.5 cm long late and almost semi-terete, spiralling and not twisted). around each other with c. 6 turns, with Epiphyte, creeping. Roots terete, mi- acute apex. Petals porrect, obovate-ob- nutely pustulate, c. 0.8 mm diam. Rhi- long, 5.2 × 1.7 mm (index 3.1), entire- zome c. 3 mm diam.; rhizome scales ly glabrous; margins entire, smooth; not persistent. Pseudobulbs 0.6–1 cm apex acute to acuminate, curved down- apart, ascending, hardly narrowing to wards; 3-nerved, the median nerve the top, dorsoventrally fl attened, 6–10 more pronounced. Lip recurved over × 2–4 mm, to c. 2 mm thick, fi nely ir- its entire length, narrowly ovate with a regularly longitudinally grooved. Leaf slightly widened base, c. 3.3 by 0.9 mm thick coriaceous, 4.7–10.2 × 2.1–2.6 (index 3.7, without artifi cial spreading), cm; petiole 2–7 × 1.5–2 mm; blade el- entirely glabrous; margins entire, at the liptic, 4.5–10 by 1.4–2.6 cm (index 3.1– back of the lip elevated with sharp mar- 3.8), with rounded apex. Infl orescence gins; upper side smooth, without or- c. 11.7 cm long, 1-fl owered; peduncle namentation; below with a broad high 7.7 cm long; peduncle scales 3; tubular, base which is elevated where the lig- the upper one with a long acuminate ament is attached and which narrows top; fl oral bract tubular, 7 mm long, and lowers to near the top of the lip in- with a long acuminate top. Pedicel and to a high crest; apex narrowly triangu- ovary 4 cm long from a 9 mm long dis- lar, acute. Column 2.7 mm long; rostel- placed node; the ovary 6 mm long, with lum not protruding; stigma elliptic; col- 6 grooves. Flower c. 9 cm long; medi- umn foot 2.5 mm long, its apex free for an sepal reddish, the margins and top 1 mm, strongly curved upwards, some- half lighter ochrish tinged reddish; lat- what widened; stelidia porrect, trian- eral sepals warm red, the facing mar- gular, acute. Anther not seen. Fruit not gins in the basal free part near the at- seen. tachment lighter ochrish red, turning whitish tinged pale red, continuing to Distribution: New Guinea: Indonesia where the sepals connect; petals light (Papua Prov., Keerom Regency), en- ochrish tinged red, the nerves slightly demic. Only known from the type. darker red; lip on upper side and laterally above purplish red, the lower side Habitat and ecology: Crown epiphyte lighter reddish tinged ochrish; column in slightly disturbed rain forest with reddish, anther light ochrish. Median trees up to c. 45 m tall, with much undergrowth. Terrain undulating to Bulbophyllum irianae. Flower detail. steep. Elevation c. 300 m. Flowering in Photo Daawia Suhartawan. the wild in February.

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Cultivation: Warm-growing epiphyte.

Etymology: Bulbophyllum irianae is named in honour of Lady Iriana Joko Widodo, First Lady of Indonesia, at the occasion of the 2018 Internation- al Conference on Biodiversity, Ecotour- ism, and Creative Economy (ICBE), Ma- nokwari, 2018, in recognition of her efforts to stimulate and support the de- velopment processes in Papua and West Papua Provinces.

Note: Bulbophyllum harposepalum Schltr. is often treated as a synonym of B. obovatifolium. It differs from B. irianae in the much smaller, not twisted sepals, the broader and obtuse lip with a median depression and obtuse apex, and in the median sepal which is towards the top conduplicate-compressed and keel-like, rather blunt, not gradually tapering.

Section Peltopus

Bulbophyllum adolinae Schuit., Wanma, Mambor & Heatubun, spec. nov. Type: Indonesia, Papua Barat Prov., Arfak Mountains, montane forest north of Anggi Giji Lake, Schuiteman 2014-38 (with Marie Briggs, Frandz Rumbiak Pawere, Soetjipto Moeljo- no, and Filep Mambor), 25 July 2014 (holotype BO; iso K, MAN).

Diagnosis: Bulbophyllum adolinae differs from B. octarrhenipetalum J.J.Sm. in the terminal callus of the column- foot, which is bilobed, with one lobe pointing upwards and one, almost equally large, lobe pointing down- ole 2–4 mm long; blade narrowly ellip- Bulbophyllum adolinae. wards (versus only one upwards-point- tic, 1.6–5.1 by 0.5–0.8 cm (index 3.2– A. Habit; B. Flower; C. Median sepal; ing callus in B. octarrhenipetalum); 6.4), apex subacute, minutely mucro- D. Lateral sepal; E. Petal; F. Lip; G. Lip rostellum minute, erect (versus ros- nate. Infl orescences patent, one or a adaxial side; H. Lip abaxial side; tellum distinctly protruding, porrect); few from each pseudobulb, 4.5–6 cm I. Ovary, column and lip; J. Petal; petals only 0.6 mm wide (versus pet- long, 1-fl owered; peduncle 3.5–5 cm K. Column, showing the two veins als 0.9–2.5 mm wide), sepals with gla- long, long persistent; peduncle scales in the column-foot; L. Anther, dorsal brous, not ciliate, margins, and the 1 or 2, tubular, 3 mm long. Floral bract view; M. Anther, ventral view. bright yellow lip (versus lip white or obliquely tubular, 3.4 mm long, acumi- Double scale bar = 1 cm; purple). nate. Pedicel and ovary 1.1 cm long single scale bar = 1 mm. Clump-forming epiphyte with a short, from a 3 mm long displaced node; Drawing Judi Stone. creeping and branching rhizome. ovary 1.3 mm long, with 6 grooves, Roots terete, smooth, 0.7 mm di- sparsely punctate. Flower not widely without the tail), 3-veined, glabrous. am. Pseudobulbs crowded, cylindri- opening, facing downwards, c. 1.3 cm Lateral sepals obliquely ovate, 12.8 × cal, slightly gradually widening to- across, creamy white, the sepals with 3.5 mm, caudate, the tail 4.7 mm long wards the base, 1–2 × 0.4 cm, fi nely violet tips, lip bright yellow. Median (index 2.3, without the tail), 3-veined, longitudinally grooved. Leaf thin co- sepal ovate, 11.6 × 3.0 mm, caudate, glabrous. Petals minute, transverse- riaceous, 2–5.5 × 0.5–0.8 cm; peti- with the tail 4.7 mm long (index 2.3, ly elliptic, 0.4 × 0.6 mm (index 0.7),

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Bulbophyllum adolinae in situ. Photo by André Schuiteman.

1-veined, glabrous. Lip in outline trian- short and thick, slightly tapering to- anther helmet-shaped, 0.5 mm long; gular, 4.1 × 2.3 mm (index 1.8, without wards the apex, 1.0 mm long; rostel- pollinia not seen. Fruit not seen. artifi cial spreading), with erect, broad- lum minute, erect; stigma without pro- ly rounded margins in basal half, car- truding margins; column-foot 1.3 mm Distribution: Indonesia (West Papua nose, fi nely papillose-pubescent on long, at the apex with a thick, shield- Prov., Arfak Mountains), endemic. On- abaxial side in the centre, margins mi- like, bilobed callus, with the lobes ly known from the type. nutely papillose, apex obtuse. Column projecting upwards and downwards; Habitat and ecology: Epiphyte on moss-covered tree trunks in montane Bulbophyllum adolinae, fl owers. forest. Elevation 1970 m. Flowering ob- Schuiteman Photo by André . served in July.

Cultivation: Cool-intermediate-growing epiphyte that should be kept under humid conditions throughout the year. Should do well when grown like a Mas- devallia.

Etymology: Bulbophyllum adolinae is named at the occasion of the 2018 In- ternational Conference on Biodiversi- ty, Ecotourism, and Creative Economy (ICBE), Manokwari, 2018, in honour of Juliana Adolina Kiriwenno Mandacan , chairwoman of the West Papua chap- ter of the Orchid Association of Indo-

7 OrchideenJournal Internet | Vol. 6 · 5 nesia; she is the wife of the governor Ed De Vogel References of West Papua Province, Dominggus Yayasan Pendidikan Alam Papua Mandacan, who is a powerful driver (YADIKAP), Pridgeon, A.M., Cribb, P.J., Chase, of nature conservation efforts in West Jl. Poros Arso 2 RT 001 RW 001, M.W. & Rasmussen, F.N. 2014. Gen- Papua Province. Kampung Yuwanain Distrik Arso Kabu- era Orchidacearum, Volume 6, Epi- paten Keerom, dendroideae (Part three). Oxford Uni- Notes: A thorough revision of Bulbo- Papua Province, Indonesia, versity Press, Oxford. phyllum sect. Peltopus was published and by Vermeulen (1993). Among the 32 Hortus Botanicus Leiden, Vermeulen, J.J. 1993. A taxonomic species recognized by him, only B. Leiden University, Rapenburg 73, revision of Bulbophyllum, sections octarrhenipetalum J.J.Sm. is similar P.O. Box 9500, 2300 RA Leiden, Adelopetalum, Lepanthanthe, Mac- enough that a careful comparison is and rouris, Pelma, Peltopus, and Uncifera required to tell them apart; see the di- Naturalis Biodiversity Center, (Orchidaceae). Orchid Monographs 7: agnosis above. In Vermeulen‘s view, P.O. Box 9517, 2300 RA Leiden, 1–324. B. octarrhenipetalum is an extraor- The Netherlands. dinarily variable species. Field stud- Filep Mambor ies are needed in order to establish Charlie D. Heatubun Biodiversity Research Center, if the variation is truly infraspeciﬁ c Badan Penelitian dan Pengembangan Universitas Papua, and not caused by hybridization. Bul- Daerah Provinsi Papua Barat, Manokwari 98314, bophyllum adolinae was discovered Jl. Brig. Jend. Mar. (Pur.) Abraham . O. Papua Barat, Indonesia. in 2014 during a joint ﬁ eld trip in the Atururi, Arfak Mountains, West Papua Prov- Perkantoran Gubernur Papua Barat, Daawia Suhartawan ince, Indonesia, carried out by staff of Arfai, Manokwari 98316, Yayasan Pendidikan Alam Papua the Royal Botanic Gardens, Kew (An- and (YADIKAP), dré Schuiteman and Marie Briggs) Fakultas Kehutanan, Universitas Papua, Jl. Poros Arso 2 RT 001 RW 001, and the Universitas of Papua (Soetji- Jl. Gunung Salju, Amban, Kampung Yuwanain Distrik Arso Kabu- pto Moeljono, Jimmy Frans Wanma, Manokwari 98314, paten Keerom, Frandz Rumbiak Pawere, Marthen Jit- Papua Barat, Indonesia, Papua Province, mau, Filep Mambor, Darius Trirbo, and and Barselina Inggesi, and Victor Simbi- Royal Botanic Gardens, Universitas Cenderawasih, ak), supported by Charlie D. Heatu- Kew, Richmond, Surrey, TW9 3AB, Jurusan Biologi Uncen, bun. United Kingdom. Jl. Kamp Wolker Waena, Jayapura 99351, Jimmy Frans Wanma Papua Province, Indonesia. Fakultas Kehutanan Universitas Pap- ua, Eline Hoogendijk André Schuiteman Kementerian Riset, Teknologi dan Pen- Hortus botanicus Leiden, Herbarium, Royal Botanic Gardens, didikan Tinggi, Leiden University, Rapenburg 73, Kew, Richmond, Surrey, TW9 3AB, JL. Gunung Salju Amban, P.O. Box 9500, 2300 RA Leiden, United Kingdom. Manokwari 98314, and Papua Barat, Indonesia. Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA Leiden, The Netherlands.

8 Internet | Vol. 6 · 5 OrchideenJournal Three new orchid species from the islands of Mindanao and Palawan, Derek Cabactulan, Dr. Miguel David De Leon, Philippines Reynold Pimentel & Jim Cootes

Continuing studies, of the orchids on rhizome; oblate to ovoid, 2.0 to long, three-nerved, 4.0 mm long by of the Philippines, and in particular 2.5 mm by 2.5 to 3.0 mm, unifoli- 1.7 mm wide. Labellum: unguiculate, those of northern Mindanao, by the ate. Leaves: subsessile, obovate to 1.5 mm long by 0.7 mm wide, adaxial- Cootes Orchid Research Group have nearly orbicular, emarginate, curved, ly papillose, abaxially glabrous, with revealed the following three species leathery, stiff, 1.3 to 1.5 cm wide by 1.5 2 ridges running the posterior two- as new to science. A study of the rel- to 2.5 cm long. Infl orescence: upright, thirds of the labellum, from the lateral evant literature from the Philippines, arising from the base of the pseudob- edge of the base towards the middle, and her neighbouring countries, has ulbs, adjacent to previous infl ores- parallel to the midline. Column: short, revealed no matches for the three spe- cences, cylindrical, racemose, rachis rounded, 0.5 mm long by 0.3 mm in di- cies we have at hand. We hereby take short, cylindrical, 10 to 11 mm long; ameter, with a pair of short, oblique- this opportunity to name these three bearing one to three-fl owers, open- ly squarish fl attened stelidia; column species as new to science. ing successively fi rst from the base to foot broadly triangular, 1.0 mm long by apex of the rachis; fl owers not open- 0.3 mm wide, with a midline keel 0.3 Bulbophyllum pyrrosifolium Cabac- ing fully, 2 mm in diameter across lat- mm long by 0.1 mm high. Anther cap: tulan, Cootes, Pimentel and M.D. eral sepals; three non-fl oral bracts are rounded, fl attened, slightly papillose, De Leon sp. nov. triangular, at the base of the pedun- 0.5 mm in diameter. Pollinia oblong, Section: Brachystachyae Bentham cle, compact, papery, somewhat fi - unequally paired, 0.2 mm long by 0.15 and Hooker f. brous, purple, 1.1 mm wide by 1.7 mm mm wide. Stigma deep, deltoid, 0.30 TYPE: PHILIPPINES, Mindanao, Bu- long, fl oral bracts purple, triangular mm in diameter. Infructescence: not kidnon, at 1,600 metres elevati- 1.5 mm wide by 2.1 mm long, non-fra- seen. on above sea level. HOLOTYPE: grant. Flower colour: purple and white. MDL1803022 (March 11, 2018), CA- Peduncle: short, cylindrical, glabrous, Comparison: The unusual and attrac- HUP073648 2 mm long by 0.5 to 1 mm in diame- tive foliage of Bulbophyllum pyrrosi- ter. Pedicel and ovary: short, conical, folium is similar to the Bornean spe- 0.6 mm long by 1.0 mm wide. Dorsal cies Bulbophyllum botryophorum Rid- Plant description sepal: oblong, three-nerved, 3.0 to 3.5 ley. Unlike the latter, the leaves of B. Growth habit: creeping, sessile, gla- mm long by 1.4 mm wide. Petals: line- pyrrosifolium are emarginate and do brous, epiphyte. Rhizome: 1.5 mm ar-ovate, single-nerved, 1.3 mm long not lay on the substrate. The pseudob- in diameter. Pseudobulbs: clustered by 0.5 mm wide. Lateral sepals: ob- ulbs of B. pyrrosifolium are clustered on the rhizome whilst those of B. botryophorum are spaced at intervals of approximately 5 to 9 millimetres; also, B. pyrossifolium has a few-fl owered infl orescence whilst that of B. botryophorum is a many-fl owered, compact infl orescence.

Habitat and Distribution: Bulbophyl- lum pyrrosifolium is only known from Bukidnon on Mindanao. It grows as an epiphyte, in partial shade in mossy dipterocarp forest, at 1,600 metres above sea level.

Etymology: The speciﬁ c epithet refers to the shape of the leaves that resem- ble an infertile frond of the fern species Pyrrosia piloselloides (L.) M.G. Price.

Bulbophyllum pyrrosifolium

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Dendrobium annemarieae Cabactu- lan, Cootes, M.D. De Leon and Pi- mentel sp. nov. Section Formosae (Bentham and Hooker f.) Hooker f. TYPE: PHILIPPINES, Mindanao, Bu- kidnon, at 1,500 metres elevation above sea level. HOLOTYPE: MDL1803023 (March 3, 2018), CA- HUP073647

Plant description Growth Habit: upright, sympodial, forming clumps. Stems: cylindrical, conical, grooved, stiff, up to 45 cm in height by 6 mm in diameter, roots are white. Leaves: leathery, narrowly lanceolate, fl attened, recurved, 3 to 6.5 cm long and 0.9 to 1.5 cm wide, base truncate, apex acute, unequally emarginate, alternate, overlapping each other, present on the upper half of the stems, bearing 5 to 20 leaves, internode distance of 1.23 to 2.3 cm, adaxially and abaxially glabrous, veins fl attened, stem turns dark brown as it ages, old leaf sheaths present on the lower portion of stem. Infl orescence: short, apical-axillary, entirely glabrous, bearing up to 5 peduncles per stem, carrying up to 4 fl owers per ra- ceme, fl ower 4.8 to 6 cm in diameter across the lateral sepals. Flower color: petals and sepals white. Pedun- cle: subsessile, white, 2.5 mm in diameter. Pedicel and ovary: terete, triangular at the base of the sepals, slightly winged, white, 3.5 to 10 cm long by 2 to 6 mm in diameter. Bracts: short, ovate, persistent, involute, 4 mm long by 2.5 mm wide. Dorsal sepal: fl eshy, fl attened, slightly revolute, narrowly oblong-ovate, margins entire, base oblong, apex acute-acuminate, 2.89 to 3.5 cm long by 6 to 10 mm wide at the base of the column, 1 to 1.5 cm wide at the center, mid rib present from the Dendrobium annemarieae left side, Dendrobium deleonii right side base. Lateral sepals: fl eshy, fl attened, Dr. Miguel David De Leone slightly revolute, lanceolate falcate, mid rib present from the base, apex ed at the margins, and sparsely papil- nutely papillate, margins entire; mid- acute-acuminate, base truncate, mar- late surface, apex abruptly mucronate, lobe is fl abellate, revolute, bilobed gins entire, 3.8 to 4 cm long from spur 3.3 to 4 cm long by 5 mm wide at the and abruptly mucronate at the center to apex, 3.3 to 3.5 cm long from column base of the column, 2 to 2.5 cm wide at about 1 mm long, sparsely papillose base to apex, 1.5 to 1.7 cm wide from at the center. Labellum: three lobed, towards the junction of the mid lobe column to spur, 1 to 1.2 cm widest, low- with the lateral lobes upright-curved, and lateral lobes, purplish lines run- er base at the spur broad, cup-shape. surrounding the column; lateral lobes ning towards the greenish base of the Petals: fl eshy, fl attened, slightly undu- are short, oblong, basally green with column, interior mid lobe raised with late, revolute, broadly obovate, mar- purple markings spreading towards ridges where pigmented veins are lo- gins entire; petal base with one or the exterior margins, 2.2 to 2.7 cm cated, lateral ridges are 4, about 3.8 two irregularly triangular calli, round- long by 6 to 8 mm wide, anteriorly mi- to 4 cm long from mentum to bilobed

10 Internet | Vol. 6 · 5 OrchideenJournal center, 2.7 cm wide from the base of cloud forests of Bukidnon on Mindan- Plant description the lateral lobes, 2.4 to 3.3 cm wide ao. It grows as an epiphyte in full sun- Growth Habit: Upright, sympodi- at the center, margins undulate and light, at elevations of between 1,300 al, forming clumps. Stems: cylindri- slightly dentate. Spur: short, acute, to 1,500 meters above sea level. cal, conical, deeply grooved, stiff, conical straight, horizontally orient- Etymology: This most surprising and can reach over 1.5 meters in length ed, 1.5 cm long, apex of the spur fused beautiful species is named in honor of by 6.5 mm in diameter, roots are at distal 3 mm. Column: fl attened, tri- Anne Marie Espiritu, wildlife photog- white. Leaves: leathery, elliptic-ob- dentate, oblongate, two 2 mm stelidia rapher and conservation advocate in long, ovate to lanceolate, 2 to 5 cm that are acute-acuminate, pointing for- the Philippines. long by 1.2 to 1.7 cm wide, base trun- wards. Column foot: green, oblongate, cate, apex emarginate, alternate, over- concave, from mentum to column 1.2 Dendrobium jyrdii D. Cabactulan, lapping each other, present on the up- to 1.5 cm long and 8 to 9 mm wide. An- Cootes, M.D. De Leon and Pimentel per half of the stem, internode dis- ther cap: squarish, concave, minutely sp. nov. tance between 1 to 3.3 cm long, adaxi- papillose, anther margins below the Section: Distichophyllae Hooker f. ally and abaxially glabrous, veins fl at- stigma are fi mbriate. Stigma: ovate, TYPE: From cultivation, PHILIP- tened, leaves borne on the upper two- concave, 3.6 to 4 mm long by 3.5 mm PINES, Palawan, at 780 metres ele- thirds of the length of the stem, stem wide. Pollinia: paired, linear-lanceo- vation above sea level. HOLOTYPE: turns dark brown as it ages. Infl ores- late, falcate, 2.5 mm long by 0.8 mm. MDL1804024 (April 30, 2018), CA- cence: short, axillary, entirely gla- Infructescence: not seen. HUP073649 brous, bearing succeeding single fra- Comparison: Dendrobium annemarieae is most similar to Dendrobium deleonii Cabactulan, Cootes & Pimen- tel, but differs in the proportionately Dendrobium jyrdii shorter, oblong sidelobes, the proportionately longer and narrower, fl abellate midlobe. The lower base of the lateral sepals proximal to the apex of the spur is broad cup-like in Den. annemarieae whereas that of Den. deleonii is narrow and funnel-like. The midlobe of Den. deleonii is straight or slightly curved whereas that of Den. annemarieae is angled downwards at the junction of the sidelobes and midlobe. The apex of the spur of Den. annemarieae is more acute, conically straight, whereas that of Den. deleonii is round- er and slightly curved. When fl owers are viewed ventrally, the throat of Den. annemarieae is broader. The leaves of Den. annemarieae are also proportionately longer and recurved than those of Den. deleonii. The mature plants of Den. annemarieae are patently smaller than those of Den. deleonii. A unique characteristic of the species is that plants as small as 6 cm can bear one to two full-sized fl owers. The fl owering season of the two species differs con- siderably too, with Den. deleonii fl owering in February and March, whereas Den. annemarieae blooms in July. The fl owering seasons have remained con- stant over the three years the authors have been studying these two species, both in their natural habitat and in cultivation. Habitat and Distribution: Dendrobium annemarieae is known only from a single locality in the windy peaks of the

11 OrchideenJournal Internet | Vol. 6 · 5 grant fl owers at each internode, up to 5 fl owers per stem, fl ower 2.7 cm in diameter across the lateral sepals and labellum; fl orals bracts short, single, persistent, involute, ovate, 2 mm long and 2.3 mm wide when fl attened. Flow- er color: white petals, sepals, and labellum, yellow in labellum keels and anther cap. Peduncle: short, thick- ened, terete, 2 mm long and 2 mm in diameter. Pedicel and ovary: cylindrical, white, slightly grooved, 25 to 30 mm long, 1 mm in diameter from the base of the peduncle and 3 mm in diameter from the base of the sepals. Dorsal sepal: fl eshy, revolute, undulate, ovate, margins entire, 5-nerved, base oblong, apex acute-acuminate, 1.4 cm long by 0.85 cm wide. Petals: fl eshy, revolute, undulate, lanceolate, margins entire, 3-nerved, base acute, sparsely minutely papillate at the base, apex acute-acuminate, 1.5 cm long by 6 mm wide. Lateral sepals: fl eshy, revolute, undulate, triangular, Dendrobium jyrdii margins entire, 5-nerved, 1.4 cm long from apex to the base of the column, 1.25 cm long from apex to the base of concave, 4 mm long by 2 mm wide. In- cies and she requested the authors to the spur, 0.79 cm wide. Labellum: is fructescence: not seen. name this orchid after her ailing son. trilobed, with two lateral lobes laying Comparison: Dendrobium jyrdii is fl attened on the midlobe; lateral lobes most similar to Dendrobium unifl o- Acknowledgements are obliquely ovate, margins irregu- rum Griff., but differs by the propor- The authors thank the Department of larly lobed, undulate, white, 1.9 cm tionately taller plant with broader fl o- Environment and Natural Resources long from apex to the base of the col- ral segments. The margins of the mid- Region X for issuing a Wildlife Gratui- umn foot, 1.1 cm long from apex to the lobe and lateral lobes of Den. jyrdii tous Permit (No. 2017-46, 21 December base of the midlobe, 9 mm wide; mid- are broad, irregularly lobed and un- 2017) to Miguel David De Leon; the lobe is obcordate-orbicular when fl at- dulate, whereas those of Den. unifl o- City Environment and Natural Resourc- tened, broadly revolute, margins irreg- rum are entire and fl attened. The spur es Offi ce for inspecting the specimens ularly dentate, undulate, 1.1 cm long of Den. jyrdii is longer, cylindrical, sac- for herbarium deposits (27 July 2018); from central apex to the central base cate, curved downwards whereas that and the Provincial Environment and of midlobe, 1.45 cm long from apex lat- of Den. unifl orum is short, conical sac- Natural Resources Offi ce (27 July 2018) eral margin to the central base of mid- cate. The petals and sepals of Den. for the issuance of the Local Transport lobe, 2.71 cm at its widest point. Spur: jyrdii are revolute, fl attened whereas Permit (Wildlife Transport Permit No. longer, cylindrical, saccate, curved those of Den. unifl orum are fully rev- 021-2018, 27 July 2018, CENRO Offi cial downwards, 9 mm long by 4 mm in di- olute, curved. The leaves of Den. jyr- Receipt No. 5584324, 27 July 2018). ameter, apex of the spur fused at 3.5 dii are compact and broader where- We are grateful to the University of the mm long. Column: fl attened tridentate as those of Den. unifl orum are widely Philippines at Los Baños Museum of oblongate, 5 mm long by 4 mm wide, 2 spaced and narrower. Natural History Botanical Herbarium stelidia on both sides that are triangu- (CAHUP) for accepting our holotypes lar, forward-pointing, 2 mm long; col- Habitat and Distribution: Dendrobi- on 13 August 2018. umn foot white, oblongate, concave, 2 um jyrdii is only known from the island mm long by 5 mm wide, with a pair of province of Palawan. rounded, fl attened keels at the center between the entrance of the nec- Etymology: This beautiful and fra- tary. Anther cap: ovate, cucullate, mi- grant species is named in honor of nutely papillose, anther margins be- Jyrd Vleck Pastores, son of Ofelia low the stigma are fi mbriate, 3 mm Pastores from the island province long by 2.3 mm in diameter. Pollinia: of Palawan. It was Ofelia Pastores equally paired, oblong, curved, 2 mm who fi rst established the provenance long by 0.6 mm wide. Stigma: oblong, of this previously widely-traded spe-

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