5b. Pohlia crudoides var. revolvens (Card.) Ochi 小丝瓜藓狭叶变种 xiao si gua xian xia ye bian zhong
Rev. Bry. Japan 13. fig. 3. 1959. Webera revolvens Card., Bull. Soc. Bot. Genève, ser. 2, 1: 125. 1909. Type: Japan. Yamanashi, Faurie 3433.
Plants medium-sized, ca. 20 mm high or higher, green to yellowish green, glossy, in loose tufts or mixed with other mosses. Stems simple or sometimes branched, reddish, slightly curved, with abundant rhizoids at base. Leaves small, lower ones loose, gradually becoming larger, imbricate, and crowded at apex, often stiff, linear or narrowly lanceolate, ca. 4 mm × 0.5 mm, flexuous at apex; margins strongly recurved, serrate above, borders not differentiated; costae strong, ending near the apex or percurrent; apical cells nearly vermicular; , median cells linear, thick-walled, 60–150 µm × 7–9 µm; basal cells not clearly differentiated. Gemmae absent. Dioicous. Male plants often growing mixed with other mosses, rarely with the female plants. Antheridia in leaf axils on stem tips. Setae straight or slightly curved, ca. 20 mm long, reddish brown; capsules erect or inclined to horizontal, large, 4–5 mm × 1.0–1.3 mm, elongate-ovoid, usually curved, asymmetric, neck short; opercula rather small, conic, shortly apiculate; annuli persistent; exothecial cells thin-walled, rounded-quadrate, smaller close to mouth, not clearly in rows, with 2–3 rows of dark colored cells near mouth; peristome bright yellowish, distinctly papillose; cilia absent. Spores yellowish brown, 15–18 µm in diameter, nearly smooth.