Bulbophyllum taeniophyllum

There seem to be several different species labeled as this when looking at the internet photos. The photo shown  is consistent with the description on the Flora of China. 

Grow intermediate-warm, partial shade, drier in winter. 

A small species, not a true miniatured .

Description from the Flora of China: Cirrhopetalum taeniophyllum (E. C. Parish & H. G. Reichenbach) J. D. Hooker; Phyllorkis taeniophylla (E. C. Parish & H. G. Reichenbach) Kuntze.

Rhizome stout. Pseudobulbs contiguous, subcylindric, 3.5-3.8 cm, 7-9 mm in diam., with a terminal leaf. Leaf subsessile; blade narrowly oblong, 16.5-19 × 1.5-2 cm, leathery, apex obtuse. Scape from base of pseudobulb, erect, cylindric, 13-14 cm; umbel several flowered; peduncle ca. 1.5 mm in diam., with 2 or 3 tubular sheaths ca. 5 mm; floral bracts ovate-lanceolate, ca. 4 mm, shorter than pedicel and ovary; ovary ± covered with papillate hairs. Flowers whitish to greenish, densely with small purple spots, sometimes with yellowish brown lip. Dorsal sepal ovate, concave, ca. 7.5 × 5 mm, margin ± dentate toward apex, apex acute; lateral sepals narrowly lanceolate, ca. 20 × 4 mm, base adnate to column foot and twisted (180°), with their upper edges connate and lower edges incurved, apex acuminate. Petals narrowly ovate, ca. 4.2 × 2.2 mm, margins toothed, apex subacute; lip recurved, lanceolate, ca. 5 × 1 mm, fleshy, adaxially with 2 keels and a channel between them, base attached to end of column foot, immobile, apex subacute. Column ca. 1.5 mm, with triangular, enlarged wings at middle; foot ca. 2 mm, with free part ca. 1 mm; stelidia shortly subulate; anther cap glabrous, apex slightly 3-lobed. Fl. Jun.

Tree trunks in dense forests; ca. 800 m. S Yunnan [Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam].