taxonID	type	description	language	source
0D1D87D6FF84FF9DFF6043604420F978.taxon	description	Planta pumila; pseudobulbi caespitosi bilateraliter compressi unifoliati, inflorescentia sessilis uni- vel biflora, floribus glabris, tepala non ciliata. TYPUS. — Bulbophyllum petrae G. A. Fischer, Sieder & P. J. Cribb.	en	Fischer, Gunter A., Sieder, Anton, Cribb, Phillip J., Kiehn, Michael (2007): Description of two new species and one new section of Bulbophyllum (Orchidaceae) from Madagascar. Adansonia (3) 29 (1): 19-25, DOI: 10.5281/zenodo.5187226
0D1D87D6FF84FF9DFF6043604420F978.taxon	discussion	REMARKS This monotypic section is morphologically different from all other sections of Bulbophyllum in Madagascar. In habit it is tiny with densely clustered and bilaterally flattened, unifoliate pseudobulbs, the one- or two-flowered inflorescence is sessile, and the sepals, petals and lip have no hairs but the former are finely papillose on the margin and the latter is slightly papillose beneath. It is also noteworthy that the only species of this section lacks spiral vessels in its tissues, a very rare situation in Madagascan Bulbophyllum. Phylogenetically the new species is placed separately on a basal polytomy as sister to all other major Madagascan clades, without any relationship to one of the described sections (Fischer et al. unpubl. data). The combination of these character states makes the species unique; therefore we propose to place that species in a section of its own.	en	Fischer, Gunter A., Sieder, Anton, Cribb, Phillip J., Kiehn, Michael (2007): Description of two new species and one new section of Bulbophyllum (Orchidaceae) from Madagascar. Adansonia (3) 29 (1): 19-25, DOI: 10.5281/zenodo.5187226
0D1D87D6FF86FF9FFEB645D34492FB75.taxon	description	(Fig. 1) Affinis B. humblotii Rolfe ex Scott-Elliot (sed parum similes) sed pseudobulbis caespitosis, inflorescentia sessili uni- vel biflore, petalis integris et columna ad margines ventraliter dentes ferenti satis differt. TYPUS. — Madagascar. Toamasina, Ambatovy, 1088 m, 18 ° 51 ’ 17 ’’ S, 48 ° 19 ’ 03 ’’ E, 9. II. 2005, Fischer & Andriantiana FS 2287 (holo-, PBZT!; iso-, K!, P!, WU!). PARATYPES. — Madagascar. Toamasina Province, Ambatovy, c. 1000 m, 6. II. 2000, Sieder & Andriantiana O 00 B 184 (WU!). — Antananarivo Province, Anjozorobe, Fischer, Knirsch & Andriantiana FS 1642 (photo, WU!). DESCRIPTION Roots numerous, along the rhizome and below the pseudobulbs. Rhizome creeping, subulate to ensiform, 1.8 - 2.2 mm in diam., sections between pseudobulbs 4 - 5 mm long, rhizome scales present. Pseudobulbs close together, orbicular, 8 - 12 × 8 - 12 mm, 1 - leafed. Petiole absent – leaf sessile. Leaf blade elliptic to obovate, 12 - 16 mm long × 5 - 8 mm wide, acute. Inflorescence a short raceme, 13 - 18 mm long, 1 - or 2 - flowered. Peduncle 7 mm long, Rhachis fractiflex, not thickened, 2 - 3 mm long. Floral bracts 1 - 2, acute, 3.5 - 4 mm long. Flowers with white sepals with dark purple dots, whitish petals, with dark purple specks at the tips, a white lip with dark purple spots suffusing the lip entirely, white anther and white column, with dark purple specks at its base. Pedicel and ovary 2 - 3 mm long. Median sepal ovate 6.9 × 2.6 mm; acute, margins entire, base broadly attached; fleshy, 3 - veined, glabrous. Lateral sepals obliquely ovate, 8 × 4 mm; acute, margins entire, base broadly attached; fleshy, 3 - veined, glabrous. Petals ovate-spathulate, 1.8 × 2.8 mm, lower margins ciliate, thin, 1 - veined, glabrous. Lip recurved at third of its length, ovate, upper surface glabrous, finely papillose beneath. Column with wings (toothlike), 4 - 5 mm long. Stelidia triangular, acute, with a small acute tooth along the upper margin. Anther surface papillose. Pollinia 4; ovoid, the inner 3 / 4 the length of the outer. HABITAT Epiphyte growing in wet montane forests, 1000 - 1400 m.	en	Fischer, Gunter A., Sieder, Anton, Cribb, Phillip J., Kiehn, Michael (2007): Description of two new species and one new section of Bulbophyllum (Orchidaceae) from Madagascar. Adansonia (3) 29 (1): 19-25, DOI: 10.5281/zenodo.5187226
0D1D87D6FF86FF9FFEB645D34492FB75.taxon	distribution	DISTRIBUTION Endemic in east-central Madagascar.	en	Fischer, Gunter A., Sieder, Anton, Cribb, Phillip J., Kiehn, Michael (2007): Description of two new species and one new section of Bulbophyllum (Orchidaceae) from Madagascar. Adansonia (3) 29 (1): 19-25, DOI: 10.5281/zenodo.5187226
0D1D87D6FF86FF9FFEB645D34492FB75.taxon	etymology	ETYMOLOGY The plant is named after the first author’s wife Petra who supported the work. CONSERVATION STATUS	en	Fischer, Gunter A., Sieder, Anton, Cribb, Phillip J., Kiehn, Michael (2007): Description of two new species and one new section of Bulbophyllum (Orchidaceae) from Madagascar. Adansonia (3) 29 (1): 19-25, DOI: 10.5281/zenodo.5187226
0D1D87D6FF86FF9FFEB645D34492FB75.taxon	description	Bulbophyllum petrae is only known from two localities. The first site, Anjozorobe, is under threat of logging and through slash and burn agriculture. The type site is located in the middle of a mining area which will be partly cleared within the next 10 years. Following the IUCN (2001) criteria this species must be considered as Endangered (EN B 1 a + b (iii )). TAXONOMIC RELATIONSHIPS This species is morphologically totally different from any other Madagascan Bulbophyllum species. Its flower differs from any other known Bulbophyllum species in size, form and structure. In its floral morphology it is superficially similar to B. humblotii Rolfe ex Scott-Elliot (section Humblotiorchis) but it differs in having caespitose not widely spaced pseudobulbs, its almost sessile, one- or two-flowered inflorescences, and the shape of its petals and sepals, the petals being entire not bifid, and the shape of the column and stelidia. Only the shape and the surface ornamentation of its lip is similar to B. humblotii.	en	Fischer, Gunter A., Sieder, Anton, Cribb, Phillip J., Kiehn, Michael (2007): Description of two new species and one new section of Bulbophyllum (Orchidaceae) from Madagascar. Adansonia (3) 29 (1): 19-25, DOI: 10.5281/zenodo.5187226
0D1D87D6FF86FF99FC8240274356FDF3.taxon	description	In sectione Ploiario Schltr. ponenda sed pseudobulbis unifoliis, inflorescentia nonnihil conica nutanti, bracteis convexis late ovatis erosis flores occultantibus, labello carnoso late ovato papilloso et sepalis lateralibus intus papillosis et extus late alatis. TYPUS. — Madagascar. Fianarantsoa, Farafangana, Iabomary shortly before Mahabo-Mananivo, Mahabo forest, 36 m, 23 ° 10 ’ 55 ’’ S, 47 ° 42 ’ 31 ’’ E, 14. XI. 2002, Fischer, Sieder & Andriantiana FS 868 (holo-, PBZT!; iso-, WU!). DESCRIPTION Roots borne along the rhizome and below the pseudobulbs. Rhizome creeping, subulate, 3 mm in diam., sections between pseudobulbs 30 - 50 mm long, rhizome scales present. Pseudobulbs distantly spaced, orbicular, 8 - 10 × 10 - 12 mm, unifoliate. Petiole absent – leaf sessile. Leaf blade obovate, 40 - 60 mm long × 25 - 38 mm wide, obtuse to emarginate. Inflorescence a short raceme, 25 - 38 mm long, 10 - to 15 - flowered. Peduncle 22 - 25 mm long, with 4 bracts. Rhachis, thickened, fleshy, 10 - 13 mm long, 6 - 8 mm in diam. Floral bracts 4, acute-obtuse, 7 - 9 mm long. Flowers entirely dark purple. Pedicel and ovary 3 - 5 mm long. Median sepal ovate, 6 - 8 × 4 - 5 mm; mucronate, margins papillose, inner surface very papillose, base broadly attached; fleshy, 3 - veined. Lateral sepals fused to a cap-like structure, recurved, covering all flower parts, 18 × 18 mm (both lateral sepals), acute; margins entire, base broadly attached; fleshy, 3 - veined, glabrous except the inner part of the fused sepals around the lip, which is very papillose. Petals ovate, 1 - 2.2 mm, lower margins ciliate, fleshy, 1 - veined. Lip recurved at 1 / 3 of its length, ovate, surface papillose, thick, fleshy. Column winged, 4 - 5 mm long. Stelidia triangular, acute with a small acute tooth along the upper margin. Anther surface slightly papillose. Pollinia 4, ovoid, the inner 2 / 3 as long as the outer. HABITAT Epiphyte growing in lowland heath forest on white sand.	en	Fischer, Gunter A., Sieder, Anton, Cribb, Phillip J., Kiehn, Michael (2007): Description of two new species and one new section of Bulbophyllum (Orchidaceae) from Madagascar. Adansonia (3) 29 (1): 19-25, DOI: 10.5281/zenodo.5187226
0D1D87D6FF86FF99FC8240274356FDF3.taxon	distribution	DISTRIBUTION Endemic in East Madagascar.	en	Fischer, Gunter A., Sieder, Anton, Cribb, Phillip J., Kiehn, Michael (2007): Description of two new species and one new section of Bulbophyllum (Orchidaceae) from Madagascar. Adansonia (3) 29 (1): 19-25, DOI: 10.5281/zenodo.5187226
0D1D87D6FF86FF99FC8240274356FDF3.taxon	etymology	ETYMOLOGY The plant is named after Jacky Andriantiana, coworker at several field trips and specialist for the orchids of Madagascar. CONSERVATION STATUS	en	Fischer, Gunter A., Sieder, Anton, Cribb, Phillip J., Kiehn, Michael (2007): Description of two new species and one new section of Bulbophyllum (Orchidaceae) from Madagascar. Adansonia (3) 29 (1): 19-25, DOI: 10.5281/zenodo.5187226
0D1D87D6FF86FF99FC8240274356FDF3.taxon	description	Bulbophyllum jackyi is only known from one locality which is under heavy pressure through forest clearing activities of local people; the surrounding forest already having been cleared. Therefore the species must be considered as Critically Endan- gered (CR B 1 a + b (iii )) according to the IUCN (2001) criteria. TAXONOMIC RELATIONSHIPS Bulbophyllum jackyi fits morphologically and phylogenetically into section Ploiarium but differs from other species in the section in having unifoliate pseudobulbs, very short inflorescences, broad, erose bracts that enclose the flowers, a broadly ovate, papillose, fleshy lip and distinctive broadly winged lateral sepals that are papillose within.	en	Fischer, Gunter A., Sieder, Anton, Cribb, Phillip J., Kiehn, Michael (2007): Description of two new species and one new section of Bulbophyllum (Orchidaceae) from Madagascar. Adansonia (3) 29 (1): 19-25, DOI: 10.5281/zenodo.5187226
