39. Bryum sauteri Bruch & Schimp. in B.S.G. 沙氏真藓 sha shi zhen xian
Bryol. Eur. 4: 162. 1846. Gemmabryum sauteri (Bruch & Schimp. in B.S.G.) Spence & Ramsay, Phytologia 87: 68. 2005. Type: Europe.
Plants tiny, ca. 4 mm high, in loose tufts. Stems erect, with reddish brown rhizoids at base. Leaves oblong-ovate to elongate-ovate, acuminate at apex; margins plane or narrowly recurved below, entire or slightly serrulate near apex, borders not differentiated; costae shortly excurrent; median leaf cells ca. 70 µm × 14 µm, thick-walled, gradually becoming slightly narrower at margins. Gemmae on rhizoids, not in leaf axils, brownish to reddish brown, papillose, pyriform, 60–100 µm × 40–60 µm, surface plane or slightly convex, often with leaf primordia. Synoicous. Setae to 30 mm long; capsules narrowly pyriform; mouth clearly constricted. Spores 16–20 µm in diameter.