Description from Flora of China
Calcearia taiwanensis (T. P. Lin & S. Y. Leu) M. A. Clements & D. L. Jones.
Plants small, 3-5 cm tall. Tuber subglobose or ovoid, 3-4 × ca. 3 mm; subterranean stem erect, pilose. Stem erect, glabrous, with 1 short cataphyll at basal node. Leaf solitary, near apex of stem, sessile, cordate, ca. 1.5 × 1.6 cm, with reticulate venation, apex acute. Floral bract lanceolate, ca. 5 mm. Flower solitary, pale purplish red, subsessile; ovary ca. 3 mm. Dorsal sepal incurved, linear, entire, ca. 13 × 2 mm, apex obtuse; lateral sepals narrowly linear, ca. 13 mm, connate at base for up to 3 mm. Petals narrowly linear, ca. 10 mm; lip orbicular-elliptic when expanded, ca. 17 × 10 mm, base tubular, apical margin fimbriate; disk with several dark red stripes but lacking calli and lamellae; spurs 2, hornlike, ca. 3 mm. Column broadly elliptic, ca. 3.5 mm; pollinia 4, in 2 pairs, ca. 1.2 mm; viscidium elliptic, large; stigma protruding, cupular. Fl. Aug.
● Mossy cliffs, rocky outcrops in forests; ca. 1400 m. N Taiwan.