Plants to 2.5-6.0 cm tall, green to dark green, with dark brown lower parts; sterile shoots uniformly foliate; fertile shoots ±comose, with extensive comal innovation. Leaves appressed to erect, frequently slightly homomallously curved when dry, erecto-patent to patent and often homomallously curved when moist, narrowly ovate-lanceolate, 4.2-6.6 mm long, 0.5-0.9 mm wide; apex concolorous or ending in a straight hyaline hairpoint; costa occupying c. 30-50% of the leaf width, abaxially smooth throughout or weakly ribbed towards the apex, adaxially with hyalocysts throughout. Alar patches mostly well developed, single-layered; cells inflated, with thin colourless to dark reddish walls; basal hyaline cells occupying the entire laminal width directly above the alar patches. Upper laminal cells irregularly rhomboidal to oval, isodiametric to short-linear, 10-60(-85) x 6-10(-20) ?m, not to conspicuously pitted; cells in transition elongate to short-linear or oblong-rhomboidal, frequently and deeply pitted. Peristome Thysanomitrion-type.
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