Hedwigia ciliata (Hedw.) P.Beauv.
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Authority
Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part Two: Orthotrichales to Polytrichales. Mem. New York Bot. Gard. 69 (2)
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Family
Hedwigiaceae
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Scientific Name
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Description
Species Description - Coarse plants in loose, green mats (grayish and often hoary when dry). Stems curved-ascending, irregularly branched, not stoloniform. Leaves erect-appressed or sometimes subsecund, with tips often spreading when dry, wide-spreading when moist, 1.3-2.3 mm long, smooth or faintly striolate when dry, oblong-ovate, acute to acuminate, nearly always ending in a hyaline tip or a short to long, broad, hyaline acumen; margins revolute in the lower 2/3 or nearly to the hyaline tip or acumen, irregularly spinulose-serrate at the apex; cells irregularly subquadrate to short-oblong or rhombic with moderately to strongly thickened, ± irregular walls (becoming somewhat longer and more noticeably porose toward the base), bearing 1-2 simple or forked papillae on either surface; median basal cells linear, smooth, and yellow, with thick, porose walls; basal marginal cells green and quadrate in many rows. Autoicous. Perichaetial leaves conspicuously ciliate above, the cilia long, hyaline, nodose or toothed. Setae very short; capsules deeply immersed, nearly hemispheric from a short neck, smooth (except for the neck, which is wrinkled when dry), wide-mouthed with the rim usually incurved when dry, pale-brown below, red-brown above, shiny when dry; operculum plano-convex, sometimes umbonate. Spores finely papillose, 20-30 µm. Calyptrae very small, conic-mitrate, smooth, hairy.
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Discussion
Fig. 495
H. ciliata (Hedw.) P.-Beauv., Prodr. Aetheog. 60. 1805.
Anictangium ciliatum Hedw., Sp. Muse. 40. 1801.
Pilotrichum subrevolutum C. Müll., Syn. Muse. Frond. 2: 165. 1851.
Hedwigia albicans Lindb., Ofvers. Forh. Kongl. Svenska Vetensk.-Akad. 21:421. 1864.
H. subrevoluta (C. Müll.) Besch., Mem. Soc. Sci. Nat. Cherbourg 16: 184.1872.
H. albicans fo. subrevoluta (C. Müll.) Fleisch., Hedwigia 61: 403. 1920.
The plants are rigid and gray when dry, but on wetting they become surprisingly fresh, green, and otherwise different in appearance owing to wide-spreading leaves. The length ofthe hyaline leaf tip is quite variable. Sporophytes are common, and the cihate margins of the perichaetial leaves are highly distinctive.
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Distribution
On rocks (usually non-calcareous) in dry, exposed places, less commonly in shade, at altitudes of 900-3400 m; Baja California, Chiapas, Chihuahua, Distrito Federal, Durango, Guerrero, Hidalgo, Mexico, Michoacan, Morelos, Oaxaca, Puebla, San Luis Potosi, Sonora, Tamaulipas, Tlaxcala, Veracruz.— Mexico; Guatemala; northern South America; Dominican Republic; Greenland; throughout North America; New Zealand and Australia; Macaronesia; Europe, the Caucasus, and the Himalayan Mountains; Japan; repor
Mexico North America| Guatemala Central America| Brazil South America| Peru South America| Ecuador South America| Colombia South America| Venezuela South America| Guyana South America| Suriname South America| French Guiana South America| Dominican Republic South America| North America| New Zealand Australia Oceania| Europe| Azerbaijan Asia| Armenia Europe| Georgia Asia| Iran Asia| Russia Asia| Turkey Asia| China Asia| Nepal Asia| Bhutan Asia| India Asia| Pakistan Asia| Japan Asia| Africa| Russia Asia| Mongolia Asia| South Korea Asia| North Korea Asia| Taiwan Asia|