Tropicos | Name - !Bryoerythrophyllum ferruginascens (Stirt.) Giacom.

Cent. Amer. Moss > Pottiaceae > Bryoerythrophyllum > Bryoerythrophyllum ferruginascens

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!Bryoerythrophyllum ferruginascens (Stirt.) Giacom.

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Project Name Data (Last Modified On 2/15/2011)

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Project data (Last Modified On 2/15/2011)

Discussion:

Bryoerythrophyllum ferruginascens has a distinctive reddish brown color, ovate-lanceolate leaves with rounded (at times apiculate) apices, firm-walled basal cells, and a costa that is thickened near the apex. Unlike most other species of Bryoerythrophyllum the upper leaf cells of B. ferruginascens are at times bistratose near the costa. The leaf margins in this species are entire and variably recurved from ½ to 3/4 their lengths. Plants with weakly recurved margins can be confused with B. jamesonii or B. campylocarpum, but those species have oblong-lanceolate, usually dentate, leaves. Bryoerythrophyllum campylocarpum further differs from B. ferruginascens in having enlarged, inflated basal leaf cells. Bryoerythrophyllum recurvum differs from B. ferruginascens in its triangular-ovate leaves and quadrate basal leaf cells.

Illustrations: Thériot (1931, Fig. 6 as Leptodontium arsenei); Thériot (1932, Fig. 4 as Barbula saint-pierrei); Gangulee (1972, Fig. 356 as Bryoerythrophyllum ferrugineum, Fig. 357 as B. gymnostomum); Smith (1978, Fig. 125 6–10); Zander (1978, Figs. 7–21); Noguchi (1988, Fig. 123 A as B. gymnostomum); Norris and Koponen (1989, Fig. 14 l–n); Eckel (1990, Figs. 1–8); Nyholm (1989, Fig. 70 B); Jóhannsson (1992, Pl. 49); Zander (1993, Pl. 24 16–18); Sharp et al. (1994, Fig. 204 a–e). Figure 15.

Habitat: On moist slopes and seeping cliffs; 3000 m.

Distribution in Central America: GUATEMALA. San Marcos: Steyermark 35732 (F, FH). COSTA RICA. San José: McQueen 4073B (MO).

World Range: Subarctic America; Western Canada; Northwestern and Southeastern U.S.A.; Mexico; Central America; Northern, Southwestern, and Middle Europe; Siberia, China, Eastern Asia; Northeast and East Tropical Africa; Indian Subcontinent, Malesia.

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Bryoerythrophyllum ferruginascens (Stirt.) Giac., Atti Ist. Bot. Univ. Lab. Critt. Pavia V, 4: 210. 1947. Barbula ferruginascens Stirt., Ann. Scot. Nat. Hist. 9: 176. 1900. Protologue: Great Britain. On the ground, Orkney, 1887, s. coll.

Leptodontium arsenei Thér., Smithsonian Misc. Collect. 85(4): 10. 1931. Protologue: Mexico. Morelia: Cerro San Miguel ([Arsène] 5073).

Barbula saint-pierrei Thér., Rev. Bryol. Lichénol. 5: 97. 1932 [1933]. Protologue: Mexico. Cuautzin, montagne au sud de Mexico, 3200 m., c.fr. (M. Saint-Pierre, n° 1879, type).

Plants small, reddish brown to reddish yellow, 10–15 mm high. Stems red, erect, not or irregularly branched, sclerodermis present, central strand well-developed; rhizoids irregularly scattered, red, smooth. Leaves 1.5–2 mm long, erect to erect-incurved when dry, wide-spreading to squarrose from an erect, clasping base when wet, ovate-lanceolate, broadly concave above; apices broadly acuminate or acute, rounded or apiculate; margins unistratose, recurved in lower 3/4, plane to erect near apex, entire, not bordered, decurrent; costa thickened above, percurrent to stoutly short-excurrent, papillose at back, ventral superficial cells short-rectangular, guide cells and two stereid bands present, ventral and dorsal epidermal layers enlarged; upper cells at times bistratose near the costa, 6–12 x 6–8 μm, firm-walled, oblate, quadrate, or short-rectangular, pluripapillose with thick, c-shaped papillae, basal cells 12–35 x 6–10 μm, long-rectangular, smooth, firm-walled, alar cells not differentiated. Obovoid propagula at times on rhizoids. Dioicous. Sporophytes not seen in Central America. “Setae 7–8 mm; capsules 2.2–2.5 mm long, ellipsoidal; annuli 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” (Zander 1994a).