2. Hypnodendron vitiense Mitt. in Seemann 小叶树灰藓 xiao ye shu hui xian
Fl. Vit. 401. 1873. Type: Fiji Islands. Seemann 842.
Hypnodendron ambiguum Broth. in Schum. & Lauterb., Fl. Schutzgeb. Sudsee Nachtr. 34. 1905, nom. nud.
Hypnodendron angustirete Dix., Ann. Bryol. 10: 16. 1937.
Hypnodendron formosicum Card., Beih. Bot. Centralbl., Abt. 2, 19(2): 147. f. 39. 1905.
Plants large, yellowish green to golden yellow. Primary stems prostrate; secondary stems dendroid, ca. 6–8 cm high, with dense rhizoids at base, sparsely foliate below the middle; pinnately branched above; branches 1.5–2.5 cm long. Stem leaves strongly appressed on stems, triangularly lanceolate, ca. 2.5 mm × 1.5 mm, not decurrent at base, abruptly acute or slenderly acuminate; margins denticulate above, entire below; costae slender, ending in the apex; branch leaves large, broadly ovate-lanceolate, ca. 4.5 mm × 2.0 mm, narrowed, asymmetric at base, not decurrent, bluntly and abruptly acute; margins plane, usually dentate, with marginal teeth single, rarely double; costae ending just below the apex, sparsely dentate at back; often with 1–2 rows of smaller leaves on branchlets, ca. 1.5 mm × 0.3–0.5 mm; median leaf cells irregularly and narrowly rectangular, nearly linear, ca. 4–5 µm wide; basal cells large, rectangular or hexagonal, ca. 60–80 µm × 20–30 µm, thick-walled, porose. Dioicous. Setae reddish brown, ca. 3–5 cm long; capsules cylindrical; opercula conic at base, long-rostrate. Spores ca. 15 µm in diameter, smooth.