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Published In: Studien über die ostasiatischen Arten der Pottiaceae 1: 5. 1940. (Stud. Ostasiat. Art. Pottiaceae) Name publication detail

Project Name Data (Last Modified On 10/22/2013)
Acceptance : Accepted
Project data     (Last Modified On 10/22/2013)
Nomenclature: B. recurvirostrum (Hedw.) Chen, Hedwigia 80: 5. 1941.
Weissia recurvirostra Hedw., Sp. Musc. 71. 1801.
Didymodon rubellus B.S.G., Bryol. Eur. 2(fasc. 29/30). 1846.
D. filicaulis Card., Rev. Bryol. 37: 126. 1910.
D. recurvirostrus (Hedw.) Jenn., Man. Mosses W. Penn. 96. 1913.
Barbula recurvirostra (Hedw.) Dix., Rev. Bryol. LichŽnol. 6: 991. 1934.
Distribution: Common, especially in calcareous regions, at higher elevations up to 3600 m alt., on soil, rocks, or bark (presumably at base of trees); Baja California, Coahuila, Distrito Federal, Jalisco, MŽxico, Nuevo Le—n, Oaxaca, Puebla, San Luis Potos’, Sonora, Veracruz. --Mexico; Guatemala; widespread in North America; Europe, Asia, Africa, and Australasia.
Discussion: The var. recurvirostrum is normally synoicous or paroicous, but some plants, usually young, may lack antheridia. However, inflorescences that contain only antheridia are not seen. In the var. aeneum, at least some perigonial inflorescences can be found.
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Plants yellow-brown above, red-brown below. Stems often branched, up to 2 cm long; rhizoids smooth or roughened. Leaves larger toward the stem tip, when dry erect-incurved or ± spreading, usually twisted, when moist spreading at 45¡ above an erect base, plane or broadly concave, 1.5-2.5(-3.2) mm long, oblong-lanceolate to lanceolate, acute or broadly acute, the base oblong to ovate and sheathing, often narrowly long-decurrent; margins recurved in the lower 3/4 or to the apex, entire or 1-3(-5)-toothed near the tip; costa percurrent or ending 1-4 cells below the apex, covered ventrally by quadrate to short-rectangular cells; upper cells subquadrate, (9-)12-14 µm wide; basal cells rectangular throughout the sheathing base, those in 1-4 marginal rows often narrow, the inner cells yellow, smooth but bulging, usually 15-22 µm wide and 3-4:1. Synoicous or paroicous. Setae 7-15 mm long; capsules (0.8-)1.5-2 mm long, cylindric above a distinct neck; annulus revoluble to deciduous in parts, of 1-2 rows of vesiculose cells; operculum 0.6-0.8 mm long, obliquely rostrate to conic-rostrate, with cells in straight or oblique rows; peristome teeth 16, irregularly cleft, 100-220 µm long, light-yellow, essentially smooth. Spores 15-19 µm, papillose.



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