SECTION Pachychlamys Schlechter 1924

TYPE: Bulbophyllum pachypus Schltr. 1925

Epiphytes with creeping rhizomes enveloped by thick and fibrous, patent apically sheaths and giving rise to clustered to distant, not laterally flattened, 2 leaved pseudobulbs that blooms on a synanthous or heteranthous, elongate, racemose, rachis hardly to not thickened, many flowered inflorescence with the lower floral bracts .28" [7 mm] long or shorter, carrying spirally arranged, resupinate flowers with free sepals that are glabrous abaxially. The margins of the petals are entire to distally minutely erose and glabrous, the mobile, undivided lip is thick and the apical part is porrect or recurved, adaxially flat or convex, margins glabrous, adaxial side without ridges or with ridges with an entire edge, The column is triangular with acute stelida and without a tooth along the lower margins [Except B multivaginatum which has a tooth]. The anther has a rounded protrusion that is slightly taller than the anterior margin.

There are ten species within this section confined to Madagascar.

Entries below with an asterix are listed in publications by J J Vermeullen and so are more likely correct than ones without. Species with a question mark in front, seem to me to not conform and so please use with caution.

1. Bulbophyllum longivaginans H.Perrier 1937 Madagascar

2. Bulbophyllum molossus Rchb. f. 1888 Madagascar

3. *Bulbophyllum multivaginatum Jum. & Perrier - Madagascar

4. *!Bulbophyllum pachypus Schltr. 1925 Madagascar

5. Bulbophyllum perrieri Schltr. 1913 Madagascar

6. Bulbophyllum sandrangatense Bosser 1965 Madagascar

7. Bulbophyllum septatum Schltr. 1924 Madagascar

8. Bulbophyllum vestitum Bosser 1971 Maadagascar