Urostachys salvinioides Herter, Philipp. J. Sci. 22: 67. 1923; Huperzia salvinioides (Herter) Holub; Lycopodium salvinioides (Herter) Tagawa; U. formosanus Herter ex Nessel.

Lycophytes, medium-sized. Stems caespitose, slender and pendulous, 6-10 times forked, 20-40 cm, main stems ca. 3 mm in diam., stem together with leaves flat or nearly flat, not cordlike. Leaves conspicuously dimorphic. Trophophylls obliquely spreading, not lustrous, ovate, 5-10 × 3-5 mm, leathery, abaxially flat, midrib distinct, base rounded, decurrent, shortly stipitate, margin entire, apex acuminate. Strobili terminal on branches, linear, 10-15 cm. Sporophylls sparsely arranged, ovate, ca. 1 × 0.7 mm, midrib distinct, base rounded, margin entire, apex acute. Sporangia yellowish, reniform, vertically bisected.

The trophophylls of Phlegmariurus salvinioides are ovate, rounded at the base, and shortly stipitate.

Epiphytic on tree trunks; 200-800 m. E and S Taiwan [Japan, Philippines].