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Published In: Muscologiae Recentiorum Supplementum 3: 29. 1817. (Muscol. Recent. Suppl.) Name publication detailView in Biodiversity Heritage Library

Project Name Data (Last Modified On 2/22/2011)
Acceptance : Accepted
Project data     (Last Modified On 2/22/2011)

Central American collections of B. canariense represent an expression of the species  described by Ochi (1977) as B. percavifolium. This expression –  marked by weakly rosulate plants with strongly concave leaves that have shortly excurrent costae and porose‑pitted median leaf cells – grades imperceivably into collections of B. canariense from western North America. The leaf border in B. canariense varies from nearly absent to consisting of 1–2 rows of longer, narrower cells. Contrary to Ochi's description (1977) the leaf border is not entire but varies from obscurely and bluntly serrulate to serrulate.

Illustrations: Bruch and Schimper (1839, Pl. 366, as B. billarderi); Renauld and Cardot (1890, Pl. 7 C); Dixon and Jameson (1896, Pl. 44 J, as B. provinciale); Andrews (1940, Pl. 95 C); Bartram (1949, Fig. 80 A–C, as B. manginii); Lawton (1971, Pl. 90 22–26); Ochi (1972, Figs. 71–72); Ochi (1977, Fig. 1); Smith (1978, Fig. 193, 7–9); Ochi (1980, Fig. 48); Magill (1987, Fig. 108 13–19); Sharp et al. (1994, Fig. 365, & Fig. 360); Churchill and Linares (1995, Fig. 25 e–g, as B. densifolium). Figure 140 A–F.
Habitat: On limestone, wet banks, logs, and shrub trunks; 2400–3700 m.
Distribution in Central America: GUATEMALA. Chimaltenango: Standley 60962 (F); Huehuetenango: Steyermark 50185 (F).  HONDURAS. Santa Bárbara: Allen 11634 (MO, TEFH).
World Range: Western Canada, Northwestern and Southwestern U.S.A.; Mexico; Central America; Caribbean, Western and Southern South America, Brazil; Northern, Southwestern, and Southeastern Europe; Macaronesia, Northern Africa, West, East, and South Tropical Africa, Southern Africa; Western Asia.


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Bryum canariense Brid., Muscol. Recent. Suppl. 3: 29. 1817.

Protologue: Canary Islands, In gramineis arenosis Insulae Teneriffae Rudley legit, Bory St. Vincent communicavit.

Bryum hendersonii Ren. & Card., Bot. Gaz. 15: 44. 1890. Protologue: U.S.A. Oregon, Portland, moist sunny bluffs, L. F. Henderson; California Mrs. Ames.

Bryum percavifolium Ochi, J. Fac. Educ. Tottori Univ., Nat. Sci. 27: 33. 1977. Protologue: Mexico. Tamaulipas: on limestone cliff, vertical surface, karst creast on road to La Perra (El Porvenir), Rancho del Cielo , above Gómez Farias, A. J. Sharp, 20 July 1974, No. 5635c (TENN), syn. nov

Plants medium-sized to robust, shiny, dark-green to yellowish green, in rosulate tufts, to 30 mm high; rhizoids spiculose papillose, forming a dense brownish red tomentum. Leaves 3–4 mm long, imbricate to appressed, at times weakly spirally twisted when dry, erect‑spreading when wet, oblong to elliptic; apices apiculate; margins obscurely and bluntly serrulate to serrulate, narrowly revolute in lower _, scarcely bordered by 1–2 rows of shorter, narrower cells; costae strong, shortly excurrent; upper cells rhomboidal‑hexagonal, thick‑walled, 16–24 μm long, often in radiating rows, median cells rhomboidal, to 34 μm long, porous‑pitted, basal cells rectangular, thick‑walled, porose‑pitted, 20–40 μm long. Dioicous (?). Setae single, to 30 mm long, reddish brown. Capsules 4–5 mm long, light‑brown, ovoid‑pyriform to oblong‑cylindrical, symmetrical, horizontal to pendent, with well‑developed neck to 2 mm long; opercula 0.5–1 mm long, conic apiculate; annuli compound and revoluble; exostome teeth brown to reddish yellow at base, white above, densely and evenly papillose on dorsal surface, endostome pale yellow, lightly papillose, basal membrane to _ of exostome teeth length, segments well-developed, broadly perforate, cilia 2‑4, appendiculate. Spores 12–18 μm, lightly roughened. Calyptra not seen.



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