Ischyrodon lepturus (Taylor) Schelpe

Shining, yellow, exceedingly variable in general appearance, normally with prostrate extension stems 1-2 inches long, having homomallous leaves and closely set with ovoid erect stems, often tapering to the point, closely leaved all round; the leaves numerous, imbricate, appressed when dry, erecto-patent when moist, 1-5 mm long, ovate-acuminate, concave, somewhat cordate at the base; the apex either shortly pointed or shortly hair-pointed; the nerve wide, extending about half-way or more, narrow above, wide below; the margin entire and erect, especially inflexed about mid-leaf, the lower part of the margin on one side sometimes reflexed; the cells widely linear, 100 x 10 µ; the basal cells very numerous, lax, pellucid, quadrate, 20 x 20 µ, extending one-third of the leaf-length along the sides and for a few cells up at the nerve, but suddenly differentiated; all cells sometimes green and chlorophyllose/more frequently empty and pellucid; but variations occur having these same general characters, but with pendulous, yellowish, slender, silky, extension stems 2-3 inches long, with few, scattered, yellowish, short, acute branches near the base, lightly clad in aristate leaves all round the stem, and not unlike a Brachythecium. Apparently dioecious. The perichaetia are very small, bud-like, and set on the main stem; the leaves shorter and wider than other leaves, sheathing, shortly brought to a point, entire or with a few big teeth; cells linear-rhomboid, and nerve absent; archegonia about six; seta 1/2 inch long; capsule oval; teeth in pairs, widely lanceolate, erect, laxly trabeculate, and closely papillose.