白毛卷柏 bai mao juan bai

Plants epilithic, evergreen, prostrate. Rhizophores at intervals throughout length of main stem, borne on ventral side in axils of branches. Main stems branched throughout, stramineous, terete, sulcate; primary leafy branches more than 3 pairs, forked, branchlets sparse, adjacent primary branches on main stem 0.7-1.2 cm apart; leafy portion of main stem including leaves 2-3.4 mm wide at middle, ultimate branches 1.6-2.4 mm wide including leaves. Axillary leaves on branches symmetrical, ovate-lanceolate, 1-2 × 0.6-1 mm, base exauriculate, margin long ciliolate. Dorsal leaves ± symmetrical, those on main stems not obviously larger than those on branches; dorsal leaves on branches not approximate, ovate, broadly ovate, or suborbicular, 0.8-2 × 0.4-0.8 mm, not carinate, base obtuse, margin long ciliolate, apex aristate or cuspidate. Ventral leaves asymmetrical, those on main stem not obviously larger than those on branches; ventral leaves on branches spreading or slightly deflexed, ovate or elliptic, 1.6-2 × 0.8-1.2 mm, apex acute or apiculate; basiscopic base rounded, margin sparsely ciliolate; acroscopic base enlarged, broader, overlapping stem and branches, margin shortly ciliolate, cilia 0.3-0.5 mm. Strobili solitary or in pairs, terminal, compact, dorsiventrally complanate, 6-25 × 2-2.5 mm; sporophylls dimorphic, resupinate, white-margined; dorsal sporophylls oblong-lanceolate, carinate, margin ciliolate, apex acuminate, with sporophyll-pteryx incomplete and ciliolate; ventral sporophylls oblong-ovate, carinate, margin long ciliolate; microsporangia elliptic; microspores orange-red, megaspores gray.

● On limestone rocks, on cliffs near streams in forests; 400-800 m. Guangxi, Guizhou.