Lophozia quinquedentata (Hudson) Cogniaux
Plants ca. 1.5--6 cm ´ 2-4 mm, ascending , green to yellowish-brown. Stems 0.3-0.45 mm in diam., sparsely branching, transverse section with 2--3 cortical cells and 10--14 medullary cells; rhizoids numerous, colorless. Leaves succubous, imbricate, ovate-reniform, 0.8--1.4 ´ 1--1.6 mm, unequally 3-lobed, shallow sinus (0.1--0.2 of leaf length), lobes broadly ovate, apex acute to apiculate, margins entire; cells rounded polygonal, marginal cells ca. 12--18 ´ 20--23 m m, median cells ca. 18--24 ´ 21--28 m m, basal cells ca. 20--28 ´ 28--38 m m, cuticle verruculose, walls thin, trigones distinct; oil bodies 2--10 per cell, spherical to ovoid, 4--7 ´ 5--10 m m, finely granular, grayish; underleaves absent. Specialized asexual reproduction by gemmae, rare, at tips of leaf lobes, yellowish-brown, polygonal, ca. 15--20 m m, 1--2-celled, smooth. Sexual condition dioicous. Androecia terminal, male bracts 4--12 pairs, similar to leaves, 2--3-androus, antheridial stalk 2-seriate. Gynoecia terminal, female bracts larger than leaves, 3--5-lobed, lobes acute. Perianths cylindrical-obovoid, plicate, mouth ciliated with teeth 4--5 cells long. Seta 2 cm, capsule oblong-ovoid, walls 4--5-stratose, yellowish or reddish-brown, exterior walls with nodular thickenings, interior walls with semiannular thickenings. Elaters ca. 6--7 m m in diam., 2-spiral, reddish-brown. Spores 12--15 m m, verruculose, yellowish-brown.
Varieties 3 (3 in the flora): North America, Eurasia.
