41. Bryum tuberosum Mohamed & Damanhuri 土生真藓 tu sheng zhen xian
Bryologist 93(3): 288. f. 1–10. 1990. Rosulabryum tuberosum (Mohamed & Damanhuri) Spence, Bryologist 99: 223. 1996. Type: Malaysia. Pahang, Genting Highlands, alt. 1500 m, Mohamed 5397.
Plants small, 5–15 mm high, green or pale reddish brown, not glossy, in loose or rather dense tufts. Stems erect, simple or rarely branched, with rhizoids at base. Leaves flexuous when dry, spreading when moist, often
asymmetric, oblong-elliptical or lanceolate, narrowed at base, acuminate at apex, ca. 1.5–2.0 mm × 0.3–0.8 mm; margins plane, entire, rarely serrulate at apex, bordered by 1–2 rows of clearly narrowed cells; costae ending below the apex or percurrent, reddish brown; median leaf cells lax, narrowly rhomboidal, 65–110 µm × 14–20 µm; upper cells slightly shorter; basal cells slightly larger, rectangular. Gemmae on rhizoids in soil, brownish, flat, disk-like. Dioicous. Sporophytes not seen.