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A Taxonomic Revision of the Moss Families Hookeriaceae and

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Leaves ovate to oblong-elliptic; tips acute to shortly pointed; capsules up to 2.5 mm long. Plants up to 1.5 cm tall; leaves collected, dry slightly contracted and bent, moist erect, spreading, oblong-lanceolate, gradually long-acuminate, 3.5-4.5 mm long, 0.8-1.2 mm wide; margins entire above, involute below for 2/3 length; bones unequal, parallel, extending beyond midrib; leaf cells smooth, thin-walled, oblong-rhombic to oblong-hexagonal, 80-130 pm long, 16-20 pm wide. Plants in flat mats, yellow to dark green; stems creeping, decumbent, irregularly branched; leaves flat, dry slightly curved and wrinkled, oblong-ligulate, 1-1.8 mm long, 0.55-0.65 mm wide, broadly acuminate to abruptly acuminate;

Plants golden green; primary stems creeping, up to 16 cm long; branches erect, up to 1.5 cm long; bracts spiral-seriate, ovate-oblong, rounded above, abruptly acute to rounded with a short apiculus, narrowed below the apex, 0.8-1.3 mm long, -0.55 mm wide, widest below midrib, concave, plicate below: margins toothed above: costae short and weak;. Plants small, densely branched in compact tufts; leaves spreading erect, ovate with a sharp tip, 0.3-0.7 mm long, 0.08-0.3 mm wide, widest just below mid-leaf, concave;. Plants small, in golden green mats; stems pinnate to bipinnate; leaves ovate-lanceolate, acute, - 1.2 mm long, up to 0.4 mm wide, broadest below midrib; ultimate bracts smaller, concave, narrowed below apex; margin sharply toothed in upper 2/3 of leaf, lowermost; costae short, faint; cells linear, prorulose, especially on back of leaf; perichaetal leaves ciliate-dentate.

Creeping primary streams; branches up to 0.8 cm long, homomalous; branchlets usually ovate-lanceolate to oblong-lanceolate, acute to acuminate, slightly constricted below apex, 1.0-1.4 mm long, 0.4-0.5 mm wide, broader near midleaf, margins weakly serrate to serrate above, slightly serrate below; Short costa; cells linear, prorulose at apical angles, shorter at apex; perichaetal leaves ciliate-dentate. Seta up to 1.6 cm high, reddish brown, smooth; capsule dark brown, suberect to cemuous, ovoid-cylindrical; urn 1.5 mm; mouth enlarged, mammillose. Small to medium-sized plant, mat-formed: stem 1.4 cm long, 2.5 mm wide with leaves, often simple, sometimes branched; leaves yellow green to green, slightly serrate, ovate to oblong-elliptic, rarely lingual, often carinate along the costa near the base, 1.3-2.3 mm long, 0.7-10 mm wide, acute in obtuse, cuspidate, apiculus pm long, not twisted: margin entire above, feebly whorled below; margin well differentiated, with 1-2 rows of linear cells near apex, 2 (-3) rows below; Median cells round to hexagonal, collenchymatous, 13-17 pm wide, more or less homogeneous in upper half of leaf, basal cells hexagonal to rectangular, 40-90 pm long, 18-25 pm wide.

Seta to 6 mm high, scabrous just below neck, smooth below; capsule ovoid-cylindrical, 1.5 mm long, mamillose; operculum rostrate. Plants small, in mats, light green: stems below erect, to 8 mm long, 2.5 mm wide with leaves when wet, simple or branched;. Plants small to medium, in loose tufts: stems creeping, to 8 mm long, 3 mm wide with leaves when wet, simple, rarely branched: leaves slightly shrunken and brittle when dry, ovate-oblong to ovate, 1.3-2 mm long. , 0.6-10 mm wide, widest between mid-leaf and 3/4 from base, slightly asymmetrical, rounded to obtuse with a stout apiculus, apiculus p m long: margin entire and plane: margins well differentiated, with 1-2 rows of linear cells near apex, 2-3 rows towards base; costa flexuose above, extending 3/s to 4/5.

Distichophyllum montagneanum is apparently restricted to India and Sri Lanka, and specimens from Java named D. montagneanum with hairy calyptra are D. Distichophyiium maloyenre Damanhuri & Mohamed, J. Plant with pale tufts, pale green; stem 6 mm high and 2.5 mm wide with leaves, brown to reddish brown, mostly simple, rarely branched; leaves slightly distorted and wavy when dry, elliptic to ovate-lanceolate, 1.8-2.5 mm long, 0.5-0.7 mm wide, acute with a long subulate point, usually twisted when dry, apiculus 250-450 pm long; full margins; margin distinctly differentiated, consisting of 1-2 rows of thin-walled linear cells; Costa weakly defined, reaching up to 2/5 of leaf length, rarely longer; Median leaf cells more or less equal in size, weak, thin-walled, large, hexagonal, 38-77 pm long, 30-57 pm wide; basal cells pale, rectangular, 64-123 pm long, 25-40 pm wide; perichaetal leaves sessile, oblong-lanceolate, 0.9-1.2 mm long, 0.2-0.3 mm wide; apex subulate. Strong plants, forming mats; stem simple or branched, spreading, rarely climbing, compressed, up to 9 cm long, 1 cm wide with leaves; leaves densely arranged on stems, twisted and moderately crumpled when dry, 3.4-6.0 mm long, 1.4-2.2 mm wide, widest above the middle of the leaf, spatulate to ovate, broadly rounded above with one or two small apicules, apiculus often less than 20 pm long; Strong costa, reaching 3/4 to 4/5 of the length of the leaves;. full limits; margins narrow, with 1 row of linear cells at top and 2 rows below; submarginal cells much smaller than paracostal cells, quadrate to oval, 10 to 20 pm wide, forming several rows near border above; paracostal cells hexagonal to polygonal, 30 to 60 pm long, 25 to 35 pm wide, thick-walled;. Plant in mats of medium size, light green; leafy stems up to 2 cm long, up to 3.5 mm wide when wet, simple or branched;.

Plants robust, loosely tufted, green to dark green; stems rising from rhizome, up to 4 cm high, often branched, loosely leafy, flat, up to 6 mm wide with leaves; leaves slightly wavy-crisp when dry, lateral rows broadly spreading, ligulate, 4-6 mm long, 1.7-2.5 mm wide, rounded above and mucilaginous; the edges are sometimes wavy, above, where they are not bordered, finely fringed; not bordered above, bordered below with 2-3 rows of linear transparent cells for 3/4 of leaf length; the bone extends to 4/5 of the length of the leaf; median cells isodiametric to irregularly hexagonal, 15-22 pm wide near apical margin, square to hexagonal, 25-40 pm wide near apical part of bone; cells near basal laxer, rectangular to oblong-hexagonal, 50-1 15 pm long, 20-27 pm wide. Distichophyllum obtusifolium differs from the present species by the wide, homogeneous median cells in the upper half of the leaf. Plants medium to large, in mats; stems decumbent, up to 3.5 cm long, 5 mm wide with leaves when wet, simple or branched; leaves barely shriveled and slightly crisped when dry, oblong-ovate to obovate, 2-3 mm long, 0.9-1.1 mm wide, widest between 3/5 and 4/5 of the base of the leaf, rounded to obtuse with small mucous membrane, mucro pm long; edges entire and straight; borders well differentiated, with 1-2 rows of linear cells near apex, 2-3 (-4) rows of linear cells near base;

Plants robust, green to dark green; stems up to 4 cm long, up to 6 mm wide with leaves; leaves loosely inserted on the stem, dry, crisp, oblong-lignate to slightly obovate, 3.3 to 4.4 mm long, 1.0-1.4 mm wide, widest at distal l/4, obtuse above, acuminate, apex long 50-100 m; edges entire, plane;. This species is very different in the large median cells, which are homogeneous in the upper part of the leaf. Plants robust, dull green; secondary stems up to 5 cm high, up to 8 mm wide with leaves, densely leafy, caudate at tips, tomentose at base; leaves asymmetrical, oval, 4.6-5.4 mm long, 1.9-2.4 mm wide, ovate-lanceolate, shortly pointed with a long piece, piece up to 400 pm; margins slightly toothed above; border well differentiated, with 2-4 rows of elongated cells; bones short, single or split; cells oval-hexagonal;.

Plants robust, dull green; secondary stems up to 5 cm high, up to 8 mm wide with leaves, densely foliaceous, caudate at tips, tomentose at base; leaves asymmetrical, gradually decreasing in size towards tips, 4.4-5.0 mm long, 1.4-2 mm wide, ovate-lanceolate, narrowed to an aristate point at apex, arista up to 400 pm long; margins distant and irregularly toothed above, sometimes almost entire; margin poorly differentiated, with 1-3 rows of elongated cells, often only on one side; costae short, ending below midrib, forked; cells oval-hexagonal, 52-84 pm long, 14-22 pm wide, larger and laxer towards base. Amphigastria symmetrical, ovoid, 2.6-3.4 mm long, 1.6-1.9 mm wide, short acuminate with a long arista up to 600 pm; margin weakly toothed above, very below; borderline weak. Cyathophorella burkillii is very similar in all aspects except the shape of the amphigastric leaves.

Plants robust, dull green; secondary stems up to 5 cm long, tips caudate, up to 1 cm wide with leaves, often with visible clusters of orange-red reproductive threads between leaves; leaves broadly spreading, asymmetric, broadly ovate, shortly acuminate with petiole up to 200 pm long, 4.5-6.0 mm long, 2.4-2.8 mm wide, widest below midleaf; margin thorn-serrate in upper third with long multicellular teeth; the border is absent or weakly differentiated; bones short, single or split; cells oval-hexagonal, 77-95 pm long, 25-36 pm wide, thin-walled;. NOTES.-This species can be recognized by the thorn-toothed edges in the upper part of the leaves. Plants dendroid, up to 2.5 cm tall, dull green; lateral leaves pinnatose, ovate, 1.2-1.5 mm long, 0.6-0.9 mm wide, widest below the middle leaf; apex subulate-acuminate with distinct arist, up to 200 pm long; the edge in the upper part on one side of the leaf is toothed, below it is entire; surrounded by 1(-2) rows of elongated cells; bones that reach 3/4 the length of the leaf;.

Plants up to 2.0 cm tall, dull green; lateral leaves pinnately spreading, 0.8-1.4 mm long, 0.6-0.8 mm wide, broadest below the middle leaf, ovate with a short acuminate apex, pointed, c. Primary stems are creeping, up to 8 cm long; secondary stems erect, up to 3.5 cm tall, yellowish green, opaque, densely pinnate in an oblong pinnate leaf, branched almost to the base; stem leaves broadly spreading, slightly arched with bent tips when dry, ovate-lanceolate from a broad, slightly keeled base, acuminate, 1.8-2.4 mm long, 0.8-1.1 mm wide, widest at base ; margins in upper half distally toothed; bordered by 1-2 (-3) rows of linear cells (except at base); costae excurrent in arista up to 150 ym long; basal part of lamina often folded on one side; median cells rounded, 8-12 pm long, 6-10 pm wide, thick-walled, distinctly collenchymatous; amphigastria oval-lanceolate with broad base, subulate-acuminate, 0.7-1.2 mm long, 0.9-1.1 mm wide, widest at base; distinctly bordered by 1-2 rows of linear cells except near base; costae long in arista up to 200 p high.

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