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Published In: Istituto Botanico della R. Università R. Laboratorio Crittogamico Pavia, Atti 4: 210. 1947. (Ist. Bot. Reale Univ. Reale Lab. Crittog. Pavia, Atti) Name publication detail

Project Name Data (Last Modified On 10/22/2013)
Acceptance : Accepted
Project data     (Last Modified On 10/22/2013)
Nomenclature: B. ferruginascens (Stirt.) Giac., Atti Ist. Bot. Univ. Lab. Critt. Pavia V, 4: 210. 1947.
Barbula rubella var. ruberrima Ferg. ex Braithw., Brit. Moss Fl. 1: 261. 1887.
B. ferruginascens Stirt., Ann. Scot. Nat. Hist. 9: 176. 1900.
B. botelligera Mšnk. ex Murr, Allg. Bot. Z. Syst. 20: 24. 1914.
Didymodon botelligera (Mšnk. ex Murr) Hag., Kongel. Norske Vidensk. Selsk. Skr. 1928: 70. 1929.
Leptodontium arsenei ThŽr., Smithson. Misc. Coll. 85(4): 10. 1931.
Barbula saint-pierrei ThŽr., Rev. Bryol. LichŽnol. 5: 97. 1932[1933].
Erythrophyllum rubellum var. ruberrimum (Ferg. ex Braithw.) Sav., Acta Inst. Bot. Acad. Sci. USSR II, 3: 522. 1936.
Distribution: On thin soil over limestone or dolomite rocks and cliffs, in seepage, commonly at higher elevations; Distrito Federal, Durango, MŽxico, Michoac‡n, Nayarit, Puebla, Tlaxcala, Veracruz. --Mexico and Guatemala; arctic and montane areas of Canada; Rocky Mountains of the United States; northern Asia; possibly Japan.
Discussion: Small, sterile examples of B. recurvirostrum with leaves flaccid when moist and contorted when dry and leaf margins recurved nearly to the apex and often irregularly toothed toward the apex may resemble B. ferruginascens.
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Plants red-brown to yellow-brown above, red-brown below. Stems branching by innovation, 5-25(-30) mm high. Propagula often present on rhizoids, red to red-brown, mostly 45-115 µm long, obovoid, often with cells irregularly bulging. Leaves becoming larger above, erect-incurved or slightly spreading and ± twisted when dry, spreading to 45-60¡ above an erect base when moist, nearly flat or broadly concave, about 1-1.8 mm long, ovate-triangular to short-lanceolate, sometimes apiculate by 1-3 weakly papillose, pellucid cells, with a distinctly oblong-sheathing base, decurrent at the costa; margins recurved in the lower half, entire (or occasionally ± serrulate at the apiculus); costa percurrent; upper cells quadrate, 10-13 µm wide; basal cells differentiated toward the costa or across the leaf, up to 12 µm wide and 2:1, mostly rectangular, hyaline or yellowish, weakly papillose. Dioicous. Setae 7-8 mm; capsules 2.2-2.5 mm long, ellipsoidal; annulus of 1-2 rows of vesiculose cells, revoluble and fragmenting; operculum 0.5-0.9 mm long, short- to long-conic, with cells in straight rows; peristome none or rudimentary, the teeth only 25 µm long, erect, subulate, pale-yellow, spiculose, without a basal membrane. Spores 12-15 µm, weakly papillose.

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