Fissidens brouardi

Fissidens brouardi Th^r. Smithson. Misc
Coll. 782; 11. 1926.
Plants small, the short stems scarcely 2 mm. high, simple; leaves 5-7 pairs, the lower minute, gradually growing larger upwards, 0.8-1.2 X 0.25-0.35 mm., oblong-lanceolate, obtusely acute, crenulate-serrulate by projecting cells above, many of the marginal ones having two marginal papillae, the costa vanishing below the apex; vaginant laminae fully half the length of the leaf, bordered below by 2-4 series of elongate cells which at base at least are partially intra-marginal ; dorsal lamina attenuate, reaching the stem; leaf-cells obscure, pleuripapillate, the upper about 6m» the lower larger, many quadrate to rectangular; rhizautoicous; seta up to 2 mm. long; capsule obovoid, the urn about 0.4 mm. long; exothecial cells rectangular, thick-walled.
Type locality: Morelia, Loma Santa Maria, Mexico {Arsene 7558).
Distribution: Mexico.