Monographs Details: Leratia
Authority: Buck, William R. 1987. Bryostephane Steereana: A Collection of Bryological Papers Presented to William Campbell Steere On The Occasion of His 80th Birthday. Mem. New York Bot. Gard. 45: 1-749.
Family:Orthotrichaceae
Scientific Name:Leratia
Description:Species Description - Rather small plants in rigid, dull, dark, redbrown tufts. Stems erect-ascending, simple or branched by 1-2 innovations, 8-12 mm high, moderately radiculose throughout (but not conspicuously so except at the base because of crowded leaves). Leaves erect and somewhat incurved when dry, erect-spreading to spreading when moist, 1.5-2.8 mm long, progressively longer toward the stem tip and grading into perichaetial leaves in size, shape and structure, narrowly oblong, gradually narrowed to a bluntly acute to rounded apex; margins plane or erect, papillose-denticulate, more strongly so at the base of lower leaves, often radiculose near the insertion; costa dark-red, very stout, prominent and papillose-roughened at back, ending at or near the leaf apex; upper cells green, rounded-hexagonal, with thick, red-yellow walls, the lumina ca. 10 µm wide, bluntly 2-4-papillose on both surfaces; lower cells not much diflferentiated in lower leaves but in the upper and perichaetial leaves the cells of the lower half long-rectangular, smooth and pale, with firm, yellow walls and often yellow in 1 or more longitudinal rows. Autoicous; perichaetial leaves similar to upper stem leaves, the perichaetia without paraphyses; perigonia adjacent to the perichaetia, small, subglobose, yellow, with a few pale-yellow, filamentous paraphyses. Setae 13-17 mm long, yellow, smooth; capsules 2.2-4 mm long (including the slender, tapered neck ca. 0.4-1 mm long), narrowly cylindric, ± small-mouthed, smooth (except for some wrinkling of the neck when dry); annulus none; operculum conic-rostrate, erect; stomata numerous, in the neck, superficial; peristome inserted well below the mouth, the exostome teeth 16, recurved when dry, incurved when moist, blunt or truncate, gray, densely papillose, the endostome reduced (as much as 150 µm high), largely hidden behind the capsule mouth, brownish, consisting of a membrane irregularly dissected into 16 stout, densely papillose and also longitudinally striate segments. (Spores immature but probably ca. 37 µm, spherical, faintly papillose.) Calyptrae large, conic, becoming slit up one side, about as long as the capsule, brown above the middle, hyaline below, naked, minutely papillose at the apex.

Discussion:

Leratiella Broth. & Syd. ex Syd., Bot. Jahresb. 37(1): 74. 1910.

Leratia neocaledonica Broth. & Par. ex Broth., Ofv. Finska VeL Soc. Forh. 51 A( 17): 14. 1909.

Leratiella neocaledonica (Broth. & Par.) Broth. & Syd. ex Broth, in E. & P., NaL Pfl. ed. 2, 11: 28. 1925.