1. Pennilabium yunnanense S. C. Chen & Y. B. Luo, Acta Phytotax. Sin. 42: 457. 2004.
巾唇兰 jin chun lan
Stems erect, ca. 1 cm, with 3 or 4 leaves. Leaf blade oblong, 4-6 × 1.3-1.5 cm, base slightly twisted, apex acute and unequally bilobed. Inflorescence from base of stem, ± pendulous, ca. 4 cm, 2- or 3-flowered; rachis flattened, ca. 5 mm; floral bracts distichous, ovate-triangular, ca. 1 mm. Flowers white, petals with dark purplish red spots inside, especially in basal half, thinly textured; pedicel and ovary ca. 11 mm. Dorsal sepal oblong-lanceolate, ca. 17 × 4 mm, acuminate; lateral sepals falcately oblong-lanceolate, ca. as large as dorsal sepal, acuminate. Petals oblong-lanceolate, ca. 16 × 3 mm, entire, acuminate; lip spurred, 3-lobed; lateral lobes subspatulate-flabellate, ca. 7 × 4 mm, apical margin shortly fimbriate; mid-lobe subligulate, ca. 4 × 2 mm, entire, acute; spur cylindric, ca. 6 × 1.5 mm, rounded-tipped. Column ca. 2 mm; stigma large, nearly covering whole front surface of column; anther cap slightly narrowed into a triangular apex; stipe ca. 0.8 mm, widened at top; viscidium elliptic, ca. 0.4 mm, thick. Fl. Sep.
Epiphytic on tea trees; ca. 1300 m. S Yunnan [NE India, Thailand].
Chinese records of Pennilabium proboscideum A. S. Rao & J. Joseph (e.g., in FRPS 19: 435. 1999) are referable to P. yunnanense.