4. Syrrhopodon flammeonervis C. Müll. 红肋网藓 hong-le wang xian
Linnaea 38: 557. 1874. Type. The Philippines: Luzon, Wallis s.n., 1871 (isotypes FH, H).
Plants large, in dense springy turfs, glossy-green distally, often red-gold proximally. Stems elongate, commonly repent and with ascending branches as in Mitthyridium, rhizoids glossy dark-red, inconspicuous. Leaves involute and sinuous-ascending when dry, bases conspicuously clasping stem, straight, involute and ascending when wet, upper laminae characteristically flexed at shoulders, linear-acuminate above the conspicuously broader base, 3.5–5.0 mm long, axillary hairs inconspicuous; costa and other parts of leaves often yellow-gold or red; cells of upper laminae very thick-walled, isodiametric to oblong, smooth abaxially or with low, simple or multifid papillae, adaxially bulging or mammillose or papillose with tall simple or variously divided papillae; margins of upper laminae strongly bordered with hyaline cells, entire except sometimes denticulate at apex, margins of lower laminae bordered with hyaline cells, entire or sometimes denticulate at shoulders; cancellinae rounded distally. Gemmae inconspicuous, short, clavate, papillose, adaxial on slightly expanded tips of gemmiferous leaves. Sporophytes unknown.