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''Bulbophyllum reflexipetalum (Orchidaceae, Epidendroideae, Malaxideae), a new species from Xizang, China''

8/29/2019

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Ji-Dong Ya, Yong-Jie Guo, Cheng Liu, Jie Cai, Gui-Jun Dong, Hong Jiang & De-Zhu Li

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Bulbophyllum reflexipetalum        Photos:  J.-D. Ya
Abstract: Bulbophyllum reflexipetalum, a new species from Motuo County, Southeast Xizang, China, is described and illustrated here. This new species belongs to Bulbophyllum sect. Umbellata Bentham & J. D. Hooker, and it is morphologically similar to B. umbellatum Lindley, B. guttulatum (J. D. Hooker) N. P. Balakrishnan and B. salweenensis X.H. Jin, but is distinguished from them by having reflexed petals, base of dorsal sepal with 1 dentate on each side, lip with significantly revolute margin, adaxially with dark brown spots or patches and one longitudinal groove.
Bulbophyllum reflexipetalum is similar to B. salweenensis X.H. Jin, B. umbellatum Lindley and B. guttulatum (J. D. Hooker) N. P. Balakrishnan in terms of morphological structure and shape of the flowers. The new species can be distinguished from B. salweenensis by the absence of sheaths on the pseudobulbs and rhizome, scape longer than leaf and petals apex mucronate. It can be distinguished from B. umbellatum with smaller and flattened void or ovoid-conic pseudobulbs, shorter leaf blade, petals apex caudate. In addition, the new species can be distinguished from B. guttulatum with leaf blade oblong and apex emarginated, shorter pedicel and ovary, lip papillae with a single longitudinal ridge.
Note(b.info): Following G.A. Fischer & J.J. Vermeulen (2014), Bulbophyllum reflexipetalum and its related species belong to section Brachyantha Rchb.f.
Published in PhytoKeys 130: 33-39
https://doi.org/10.3897/phytokeys.130.34153
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''Bulbophyllum championii, a new species''

6/30/2019

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Rudolf Jenny

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Bulbophyllum championii     Photo: R. Amsler
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Bulbophyllum longicaudatum    Photos: R. Amsler
Abstract: Rudolf Jenny describes and illustrates Bulbophyllum championii, a new species from New Guinea. 
While visiting the huge orchid collection at Roland Amsler's nursery in Sirnach, Switzerland, the author saw many unusual and interesting Bulbophyllum species. One such was a large, golden-flowered species, which proved to be new to science. R. Jenny describes it here for the first time as B. championii.
Bulbophyllum championii is similar to B. longicaudatum and B. nasica, both of which were originally described under other names. In 1909, Johan Jacob Smith described and illustrated Bulbophyllum blumei var. pumilum in the journal Nova Guinea. When Rudolf Schlechter published his treatment of the orchids of New Guinea in 1913, Repertorium Specierum Novarum Regni Vegetabilis, Beihefte, he raised Smith's Bulbophyllum blumei var. pumilum to the rank of species but changed the name to Bulbophyllum nasica because the name Bulbophyllum pumilum had already been used by Lindley in 1830. A second variety of Bulbophyllum blumei was published and illustrated by J.J. Smith in 1911, again in the journal Nova Guinea, as B. blumei var. longicaudatum. In 1914, Smith decided to accept this variety as a species in its own right and named it Bulbophyllum longicaudatum, in Bulletin du Jardin Botanique de Buitenzorg.
Bulbophyllum longicaudatum and Bulbophyllum nasica are both in section Ephippium (Note: Following G.A. Fischer & J.J. Vermeulen 2014 and J.J. Vermeulen et al. 2014, both species belong to section Polymeres. Section Ephippium is now used by J.J.Verm. & P.O'Byrne (2014) for a group of species former members of the section Cirrhopetalum s.l.) and are almost identical, except for the size of the tails of the lateral sepals. Some authors treat the two binomials as synonyms, others treat them as two distinct species. Both concepts are very variable in flower colouration, and both are widley distributed in New Guinea.

Bulbophyllum championii is similar to B. longicaudatum. However, the flowers of B. championii are golden yellow. They are a third to double the size of those of B. longicaudatum, the lateral sepals are much broader with longer tails, and the petals have a distinctly warty surface.
Roland Amsler first saw this species in the orchid collection of Jeffery Champion in Bedugul, on the island of Bali. Roland aquired several plants, which later flowered in his collection.
Published in The Orchid Review, June 2019: 91 - 95.
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''Bulbophyllum yarlungzangboense (Orchidaceae; Epidendroideae; Malaxideae), a new species from Tibet, China''

5/31/2019

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Jian-Wu Li, Xi-Long Wang, Cheng-Wang Wang, Bo Pan, Zhu-Qiu Song, Xiao-Hua Jin

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Bulbophyllum yarlungzangboense​     Photos: Jian-Wu Li
Abstract: Bulbophyllum yarlungzangboense, a new species of Orchidaceae from Tibet, China is described and illustrated, it is morphologically similar to Bulbophyllum gamblei and Bulbophyllum shweliense, but can be easy distinguished from the later by petals ovate-oblong, stelidis triangular, base of column foot with V-shape cushion. The new species is tentatively assigned to sect. Desmosanthes based on morphological characters.
During a botanical survey to Bomi County, Tibet, China in November 2017, some plants of Bulbophyllum with young inflorescence were transferred to Xishuangbanna Tropical Botanical Garden (XTBG), and flowered on Dec. 18, 2017.
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XTBG researchers carried out morphological studies and consulted a large amount of literature. They confirmed that the flowering Bulbophyllum plant is new to science. They named it as Bulbophyllum yarlungzangboense to refer to Yarlungzangbo Grand Canyon where it was discovered. 

Bulbophyllum yarlungzangboense grows epiphytic on trees or mossy rocks near to the riverside in Yarlungzangbo Grand Canyon, at elevations about 1700–2100 m. It flowers from November to December. 
Published in Phytotaxa 404 (2): 79 - 84
​DOI: http://dx.doi.org/10.11646/phytotaxa.404.2.3
https://www.mapress.com/j/pt/article/view/phytotaxa.404.2.3
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Article from the Chinese Academy of Science
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''New species of Bulbophyllum (Orchidaceae) in the flora of Vietnam II''

5/24/2019

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Leonid V. Averyanov, Khang Sinh Nguyen, Ba Vuong Truong, Van Canh Nguyen, Tatiana V. Maisak, Tran Huy Thai, Pham Thi Thanh Dat & Bao Ngan Tu

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Bulbophyllum layae     Photo: T. Ba Vuong
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Bulbophyllum metallica     Photo: L. Averyanov
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Bulbophyllum papilligerum     Photos: D. Slastunov & L. Averyanov
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Bulbophyllum alcicorne     Photos: Nguyen Van Canh
Abstract: Three species, Bulbophyllum layae, Bulbophyllum metallica and Bulbophyllum papilligerum (all from sect. Cirrhopetalum) are described as new for science. All of these novelties are local endemics of limestone areas of northern Vietnam.  Additionally, three species, Bulbophyllum alcicorne (sect. Brachystachya), Bulbophyllum psittacoglossum and Bulbophyllum yunnanense (both from sect. Sestochilus) are recorded for the flora of Vietnam for the first time. These species have wide distribution in mainland Asia. Data on ecology, phenology, distribution, brief relevant taxonomic notes, as well as color photographs, analytical plates of the type and voucher specimens are provided for all reported taxa. Lectotypification is provided for Bulbophyllum yunnanense.
Bulbophyllum layae superficially resembles juvenille specimens of widespread and variable B. pecten-veneris
(Gagnepain 1931: 6) Seidenfaden (1974: 37), but well differs in short inflorescence scape, as long, or little longer than flowers (vs. scape much longer than flowers), small flowers 2.5–3 cm long (vs. flowers more than 4 cm long) and dense setose white hairiness of basal half of the lip (vs. lip with no hairs). Very few known about new species ecology. Most probably new species like B. pecten-veneris inhabits limestone forests at elevation 500–1500 m.
Bulbophyllum metallica belongs to Bulbophyllum sect. Cirropetalum s.l. on the base of its floral morphology and formally allies to the group of species having short scape, few-flowered loose umbel-like inflorescence, entire margin of sepals and petals, simple lip and lateral sepals twisted at the base and connate on lower and upper edges. In eastern Indochina such combinations of morphological features exhibit such species as B. seidenfadenii A.D. Kerr, B. spathulatum (E.W. Cooper) Seidenf. and B. unciniferum Seidenf. From these species (as well as from other members of the section Cirropetalum) our plant strikingly differs in pendulous stems to 1.5 m long, narrowly cylindric, petiolelike pseudobulbs to 7 cm long (3–5.5 mm in diameter), long down hanging coriaceous leaves to 40 cm long with blue-green metallic shine on adaxial side and very shot scape, less than 1.5 cm long. Fleshy, hardly opening, white, purple speckled flowers are also very distinct from all other species known in Indochina. Even sterile plants are easy recognizable for amazing metallic blue or blue-green shining of adaxial leaf surface. For this remarkable character, plant was noted as a new species already in 2001 (LE01042169). However, plants with flowers used for appropriate description were found only seventeen years later. According to available data, new species is very rare plant growing usually along mountain streams in particular humid habitats.
Bulbophyllum papilligerum may be attributed to Bulbophyllum sect. Cirropetalum on the base of its obvious floral morphology. Among species of this section, it may be solely compared with Bulbophyllum flaviflorum (Tang, S. Liu & H.Y. Su) Seidenf., Bulbophyllum hirundinis (Gagnep.) Seidenf. and Bulbophyllum pecten-veneris (Gagnep.) Seidenf. (and Bulbophyllum fimbriperianthium W.M.Lin, Kuo Huang & T.P.Lin) From these species, discovered plant differs in erect scape (vs. scape pendulous or horizontal, down arching), headlike inflorescence (vs. umbellate inflorescence when flowers are spaced in one plane), smaller flowers 1.4–1.5 cm long (vs. flowers longer than 2 cm), lateral sepals free along lower margin, slightly broadening to obtuse or blunt apex (vs. lateral sepals joined along lower margin, tapering to acuminate or caudate apex), petals round at apex (vs. petals acute), bunch of fat long papillae on abaxial surface near petal apex (vs. petals ciliate or fimbriate along the margin, hairless on abaxial surface), adaxial surface of petal apex with many dense short conical glass-like papillae (vs. petal surface with no particular glass-like papillae), nor particular stelidia (vs. stelidia prominent, subulate), anther margin slightly erose (vs. frontal anther margin distinctly denticulate or fimbriate).
Published in Phytotaxa 404 (6): 231–244
DOI: ​https://doi.org/10.11646/phytotaxa.404.6.2
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''Bulbophyllum claviforme, a new species from Vietnam''

5/15/2019

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Ba Vuong Truong, Quam Tam Truong, Van Huong Bui & Jim Cootes

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Bulbophyllum calviforme     Photos: B.V. Truong
Abstract: The new species, Bulbophyllum claviforme, originated from Son La province and was cultivated in Ho Chi Minh City. The publication presents a detailed description and figures for this species. It differs from all known members of the Bulbophyllum alliance by the color of the flowers, the short inflorescence, and the clavate hairs along the margin of the dorsal sepal and petals.
Bulbophyllum claviforme resembles Bulb. pecten-veneris and Bulb. flaviflorum but differs in its flower color – yellowish orange vs red (Bulb. pectenveneris), yellowish green (Bulb. flaviflorum) – distinctly short inflorescence of Bulb. claviforme, which is as long, or little longer than flowers (vs. scape much longer than flowers of Bulb. pecten-veneris and Bulb. flaviflorum), small flower 20 – 25 mm long (vs flowers more than 40 mm long), the dense yellow clavate hairs along the margin of dorsal sepal and petals (vs fimbriate-ciliate edges of the margins of the dorsal sepal and petals of Bulb. pecten-veneris and Bulb. flaviflorum), dorsal sepal broadly ovate and acute apex (vs long caudate) and petals ovate, apex obtuse-rounded (vs ovate, apex acute).

It grows in Vietnam, Son La province in evergreen
broad-leaved humid forests as a epiphyte on tree branches where it flowers in August.

Published in Die Orchidee 5(07), 2019/E-Paper
https://orchidee.de/e-paper/taxonomische-mitteilungen/​

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''Bulbophyllum thydoii, a new species from Hon Ba Nature Reserve in Vietnam''

4/29/2019

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Ba Vuong Truong, Quang Tam Truong, Jan Ponert & Jaap J. Vermeulen

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Bulbophyllum thydoii     Photos: Jan Ponert
Abstract: Bulbophyllum thydoii is described as a new species of sect. Brachyantha. This species is morphologically close to Bulbophyllum umbellatum and differs by the synanthous inflorescence, petals which proximally do not overlap with the lateral sepals and larger flowers with median sepal 15 - 20 mm long.

Bulbophyllum thydoii resembles Bulb. umbellatum LINDL., Genera and species of Orchidaceous plants: 56, 1830, and Bulb. elatum (HOOK. F.) J. J. SM., Bulletin du Jardin Botanique de Buitenzorg ser. 2, 8: 23, 1912. It differs by the synanthous inflorescences (heteranthous in Bulb. umbellatum and Bulb. elatum), and by the petals which do not touch the lateral sepals proximally (overlapping with the lateral sepals in Bulb. umbellatum and Bulb. elatum). In addition, Bulb. thydoii has larger flowers than Bulb. umbellatum (median sepal 15 – 20 mm long, versus ca. 9 mm long).

It grows on trunk or branches, usually associated with Cleisocentron klossii (RIDL.) GARAY, Campanulorchis longipes (GAGNEP.) J. PONERT, Eria lactiflora AVER. and Mycaranthes floribunda (D. DON) S. C. CHEN et J. J. WOOD. Flowering time March until late of March.

Published in Die Orchidee 5(06), 2019/E-Paper
https://orchidee.de/e-paper/taxonomische-mitteilungen/

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''A new species of Bulbophyllum''

3/31/2019

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Rudolf Jenny

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Bulbophyllum freitagii    Photo: R. Amsler
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Bulbophyllum diplohelix & B. freitagii; compairison  Photos: R. Amsler
Abstract: Rudolf Jenny describes and illustrates Bulbophyllum freitagii, a new species from New Guinea.
The Author saw this species recently in the orchid collection of Swiss expert grower Roland Amsler, who specializes in Bulbophyllum.
Bulbophyllum freitagii belogns to the recently described section Hoplandra and is closely allied with Bulbophyllum diplohelix. Its lateral sepals are much shorter than B. diplohelix and do not spiral around each other; the lip is about twice the size with a lumpy surface. The hairs are much longer, and the ovary and pedicel are shorter.
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It is so far only known from the type locality in West Papua where it grows in evergreen  forest.
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Bulbophyllum freitagii is named after Walter Freitag (16.11.1963 to 7.1.2018), a passionate Swiss gardener, friend and travel companion of Roland Amsler.
Published in The Orchid Review, March 2019: 33 - 35
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''Bulbophyllum chrysolabium (Orchidaceae, Epidendroideae, Malaxideae), a new species from Yunnan, China''

11/13/2018

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Lin Li, De-Ping Ye & Song-Jun Zeng

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Bulbophyllum chrysolabium     Photos by the authors
Abstract: Bulbophyllum chrysolabium, a new species belonging to section Racemosae from Yunnan, China is described and illustrated. The species is related to B. orientale and B. morphologorum, but differs by having the following set of characters: obliquely broadly-based triangular petals with a long filiform apex; lip densely glandular papillose and conspicuously ciliolate along margins; lip auricles well developed, narrowly falcate, tapering to a long sharp point at the apex; stelidia subulate and twisted inwards, slightly exceeding operculum. The conservation status of B. chrysolabium is assessed and taxonomic notes are provided.
Bulbophyllum chrysolabium is distinguished from all known congeners by having the following unique combination of features: obliquely broadly-based triangular petals with a long filiform apex; lip densely glandular papillose on both sides and conspicuously ciliolate along margins; lip auricles well developed, narrowly falcate, tapering to a long sharp point at the apex; stelidia subulate and twisted inwards, slightly exceeding operculum.
 Taxonomic notes:   Bulbophyllum chrysolabium appears to be related to B. orientale Seidenf. (Seidenfaden 1979: 138), especially in narrowly falcate lip auricles and twisted stelidia, but differs in distinctly longer floral bracts (almost twice as long as the pedicel and ovary); petals with long filiform apices, a rather smaller lip (ca. 2.8 mm long), significantly glandular-papillose and ciliolate at margins; stelidia slightly exceeding operculum and distinctly longer than column. With respect to filiform petals, B. chrysolabium is also superficially similar to B. morphologorum Kräenzl. (1908: 89), however, the latter have a fat, conical protuberance or callus on the front of the column near its base and scape much longer than rachis. In addition, it has subulate, not twisted stelidia, considerably longer than operculum; lip auricles not falcate, but rather obtuse at the apex. A detailed morphological comparison between B. chrysolabium and its allied species is presented in Table 1.
Published in PhytoKeys 111: 61-68
https://doi.org/10.3897/phytokeys.111.28136
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''Three new orchid species from the island of Mindanao and Palawan, Philippines''

10/6/2018

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Derek Cabactulan, Dr. Miguel David De Leon, Reynold Pimentel & Jim Cootes

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Bulbophyllum pyrrosifolium     Photo: Miguel D. De Leon
Abstract: A new Bulbophyllum species, Bulbophyllum pyrrosifolium (sect. Brachystachyae), and a new Dendrobium species are proposed from the province Bukidnon, Mindanao and a new Dendrobium species from the island province of Palawan is also proposed.

The unusual and attractive foliage of Bulbophyllum pyrrosifolium is similar to the Bornean species Bulbophyllum botryophorum Ridley. Unlike the latter, the leaves of B. pyrrosifolium are ermarginate and do not lay on the substrat. The pseudobulbs of B. pyrrosifolium are clustered on  the rhizome whilst those of Bulbophyllum botryophorum are spaced at intervals approximately 5 - 9 millimeters; also B. pyrrosifolium has a few-flowered inflorescence whilst that of Bulbophyllum botryophorum is a many-flowered, compact inflorescence.

Bulbophyllum pyrrosifolium is only known from Bukidnon on Mindanao. It grows as an epiphytes, in partial shade in mossy dipterocarp forest, at 1,600 metres above sea level.

Published in OrchideenJournal, Vol. 6-5: 9 - 13
http://www.orchideen-journal.de/descriptions.htm

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

10/5/2018

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André Schuiteman, Ed De Vogel, Charlie D. Heatubun, Jimmy F. Wanma, Filep Mambor, Daawia Suhartawan & Eline Hoogendijk 

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Bulbophyllum irianae    Photo: Daawia Suhartawan
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Bulbophyllum irianae    Photo: Eline Hoogendijk
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Bulbophyllum adolinae     Photos: André Schuiteman
Abstract: Two new species of Bulbophyllum are described here as Bulbophyllum irianae (sect. Hoplandra) and Bulbophyllum adolinae (sect. Peltopus)
Bulbophyllum irianae ist most similar to Bulbophyllum obovatifolium J.J.Sm., but differs in the apex of the median sepal which is a long, solid, terete, subulate awl c. 0.8 cm long that is adaxially in the lower half flat, has no crest or keel, and narrows continuously and gradually into very thin, narrowly acute tip (versus median sepal keeled, acute, concave, the top half in the middle conduplicate, laterally compressed); the lip from above slender narrowly triangular with a narrowly acute apex and a smooth upper surface without ornamentation (versus lip from above tongue-shaped with an obtuse apex and a channeled upper side with two ribs and a low small rib in the middle); lateral sepals c. 8.2 cm long and 6 times twisted around each-other (versus lateral sepals c 4.5 cm long and not twisted).

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.

It grows as a crown epiphyte in slightly disturbed rain forest with trees up to c. 45 m tall, with much undergrowth. Terrain undulating to steep. Elevation c. 300 m. Flowering in the wild in February.

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 downwards (versus only one upwards-pointing callus in B. octarrhenipetalum); rostellum minute, erect (versus rostellum distinctly protruding, porrect); petals only 0.6 mm wide (versus petals 0.9 - 2.5 mm wide), sepals with glabrous, not ciliate, margins, and the bright yellow lip (versus lip white or purple).

A thorough revision of Bulbophyllum sect. Peltopus was published by J.J. Vermeulen (1993). Among the 32 species recognized by him, only B. octarrhenipetalum J.J.Sm. is similar enough that a careful comparison is required to tell them apart. Vermeulen's view, B. octarrhenipetalum is an extraordinarily variable species. Field studies are needed in order to establish if the variation is truly infraspecific and not caused by hybridization. Bulbophyllum adolinae was discovered in 2014 during a joint field trip in the Arfak Mountains, West Papua Province, Indonesia, carried out by staff of the Royal Botanic Gardens, Kew (André Schuiteman and Marie Briggs) and the Universitas of Papua.

It is a Epiphyte on moss-covered tree trunks in montane forest. Elevation 1970 m. Flowering observed in July.

Published in OrchideenJournal, Vol. 6-5: 3 - 8
http://www.orchideen-journal.de/descriptions.htm

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