26. Fissidens incognitus Gangulee    聚疣凤尾藓   ju-you feng-wei xian

Bull. Bot. Soc. Bengal 11: 70, f. 9. 1957 [1959]. Fissidens granulatus Hampe in C. Müll., Gen. Musc. Frond. 61. 1900, nom. nud. Type. India: 26 XII 1870, Kurz 3358 (isotype H-BR).

 

Plants small, yellowish green to brown. Leafy stems simple or sometimes with a few branches, 1.3–5.8 mm long, 1.0–1.3 mm wide; axillary hyaline nodules not differentiated; central strand lacking. Leaves in 5–16 pairs, the lowest leaves much smaller than the upper ones, more or less loosely arranged; middle to upper leaves densely arranged, oblong-lingulate, 0.7–0.8 mm × 0.20–0.25 mm, acute at apex; base of dorsal laminae rounded; vaginant laminae ca. 1/2–3/5 the leaf length, equal to slightly unequal; costa stout, light yellowish brown, percurrent to shortly excurrent; margins serrulate throughout; cells of apical and dorsal laminae quadrate to hexagonal, 7–12 µm long, thin-walled, highly mammillose and obscure, with cluster of 2–5 high papillae at center; cells of vaginant laminae similar to those of apical and dorsal laminae; limbidia of vaginant laminae of most leaves composed of 2–3 rows of cells, and edged on outside by one row of highly mammillose, pluripapillose cells with thickened walls. Dioicous. Archegonia terminal on stems or on branches, ca. 157 µm long. Perichaetial leaves narrower and longer than stem leaves. Setae erect, 2.5 mm long, smooth; capsules erect, symmetrical; urns 0.8 mm long.