Monographs Details: Aloinella
Authority: Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part One: Sphagnales to Bryales. Mem. New York Bot. Gard. 69 (1)
Description:Genus Description - Plants small, loosely gregarious. Stems forked, with reddish rhizoids at base, in section showing an outer region thick-walled cells, an inner tissue of large, nearly isodiametric, firm-walled cells, and a central strand of small, thin-walled cells. Leaves cucullate-concave, appressed-imbricate, broadly lingulate, not differentiated at base; margins plane and irregularly undulate to crenulate above; costa broad, flat, ending in the hoodlike apex, dorsally papillose above, with a single dorsal stereid band of 1-5 layers of cells, bearing on the upper surface green filaments that are 2-10 cells high and generally end in a dome-shaped, thin-walled cell; cells of upper and median portions quadrate to rectangular, papillose at back; basal cells larger, quadrate to rectangular, thin-walled. Dioicous. Perichaetial and perigonial leaves progressively modified from stem leaves, broad and sheathing, non-cucullate, with costa generally weak and areolation lax. Setae elongate, yellowish-red, twisted to the left above and below; capsules erect and symmetric, 0.9-2 mm long, ± ovoid-cylindric, brown; annulus in 1-2 rows; operculum obhquely rostrate; peristome teeth nearly erect, rather short, entire or ± cleft, yellowish, papillose. Spores ± spherical, finely papillose.
Discussion:The genus consists of small plants with a distinctive appearance owing to imbricate leaves that are cucullate-concave with a broad costa covered by green filaments and coarse papillae at back. In contrast to Aloina, the peristome teeth are short, erect, and essentially entire. The genus is discussed in some detail by Delgadillo (1973a, 1973b, 1975b).