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FNA | Family List | FNA Vol. 28 | Brachytheciaceae

12. Myuroclada Bescherelle, Ann. Sci. Nat., Bot., ser. 7. 17: 379. 1893. • [Greek mys, mouse, oura, tail, and clados, branch, alluding to resemblance].

Wilfred B. Schofield

Plants medium-sized, in loose mats, pale silvery green. Stems creeping to erect-arcuate, , strongly julaceous, unbranched to weakly irregularly branched, branches terete-foliate; central strand present; pseudoparaphyllia orbicular-triangular; axillary hairs of 2-4 cells. Stem leaves erect-appressed, crowded, imbricate, orbicular to broadly ovate, concave, not or indistinctly plicate; base moderately decurrent; margins nearly entire to serrulate; apex very broadly acute to rounded, short-apiculate when young, blunt when mature; costa to mid leaf or slightly beyond, moderately stout, terminal spine absent; alar cells smaller than basal juxtacostal cells; laminal cells short-rhombic to rhombic. Branch leaves similar. Sexual condition dioicous. [Seta red-brown, smooth. Capsule inclined to horizontal, nearly black when old, oblong, weakly curved; annulus separating in fragments; operculum long-conic, obliquely rostrate; peristome xerocastique, perfect. Calyptra naked. Spores 12-16 µm].

Species 1: Alaska, e Asia (Japan, Korea, Russia); introduced in Europe. The above description of the sporophyte is from Asian material.

SELECTED REFERENCE Steere, W. C. and W. B. Schofield. 1956. Myuroclada, a genus new to North America. Bryologist 59: 1-5.

Lower Taxon


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