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Published In: Species Muscorum Frondosorum 171. 1801. (Sp. Musc. Frond.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

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

Pohlia elongata is recognized by its paroicous sexual condition, extremely long-necked capsules and thick-walled leaf cells. It can be confused with P. oerstediana, which also is paroicous, but that species is much bigger than P. elongata and its leaves often have a glossy sheen. In addition, its capsules have shorter more gradually tapered necks and its leaf cells are thin-walled. The capsules of P. elongata can vary greatly in size and shape, however, most Central America collections of the species have the long, linear-cylindrical capsules characteristic of the spectabilis-expression of the species.

Illustrations: Hedwig (1801, Pl. 11 fig. 4); Bruch and Schimper (1839, Pl. 345); Husnot (1889, Pl. 61); Dixon and Jameson (1896, Pl. 41 K); Grout (1906, Fig. 106); Williams (1923a, Pl. 4); Grout (1935, Pl. 75C); Bartram (1939, Pl. 10 156); Bartram (1949, Fig. 70, A–C); Nyholm (1958, Fig. 105 B); Abramova et al. (1961, Pl. 146 6–11); Lawton (1971, Pl. 101); Flowers (1973, Pl. 73 1–15); Gangulee (1974, Fig. 474); Smith (1978, Fig. 173 1–5); Crum and Anderson (1981, Fig. 243); Ireland (1982, Pl. 163); Shaw (1982a, Figs 4 & 5); Orbán and Vajda (1983, Pl. 54 351); Li (1985, Fig. 74 7–11); Magill (1987, Fig. 100 11–19); Noguchi (1988, Fig. 185A); Nyholm (1993, Fig. 126); Sharp et al. (1994, Fig. 389); Churchill and Linares (1995, Fig. 29 h–l); Jóhannsson (1995, Pl. 3). Figure 161 A–D.
Habitat: On tree trunks, logs (Cupressus), rotting wood, soil, damp banks, volcanic ash, and non-calcareous boulders; 1510–4000 m.
Distribution in Central America: GUATEMALA. Quezaltenango: Sharp 2113 (MO, TENN); San Marcos: Sharp 5442 (F, TENN); Sololá/Totonicapán: Williams et al. 41751 (F, MO); Totonicapán: Sharp 2589 (TENN). HONDURAS. Cortés: Allen 14332A (MO, TEFH); Lempira: Allen 12088 (MO, TEFH). COSTA RICA. Alajuela: Crosby & Crosby 6269 (MO); Cartago: Dodge 4108 (MO); San José: Crosby & Crosby 8595 (MO). PANAMA. Bocas del Toro: Gómez et al 22608 (MO); Chiriquí: Allen 9071 (MO, NY).
World Range: Western and Eastern Canada, Northwestern, North-Central, Northeastern, and Southeastern U.S.A.; Mexico; Central America; Caribbean, Western and Northern South America; Northern, Middle, Southwestern, Southeastern, and Eastern Europe; Macaronesia,  Northern Africa, West-Central, East, and South Tropical Africa, Southern Africa, Western Indian Ocean; Siberia, Russian Far East, Caucasus, Middle Asia, Mongolia, China, Eastern Asia, Western Asia; Indian Subcontinent, Indo-China, Malesia; Australia, New Zealand.

 

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Pohlia elongata Hedw., Sp. Musc. Frond. 171. 1801.

Bryum elongatum (Hedw.) With., Syst. Arr. Brit. Pl. (ed. 4) 3: 815. 1801. Leskea elongata (Hedw.) Web. & Mohr, Index Mus. Pl. Crypt. 3. 1803. Mnium elongatum (Hedw.) P. Beauv., Prodr. Aethéogam. 75. 1805.  Lamprophyllum elongatum (Hedw.) Lindb., Acta Soc. Sci. Fenn. 10: 27. 1871. Protologue: In silvaticis ad vias cavas Chemnizii in Saxonia, Erlangae, Hannoverae, in Scotia, in alpibus Austriacis, Styriacis.

Bryum cylindricum Dicks., Fasc. Pl. Crypt. Brit. 4: 12. 1801. Pohlia cylindricum (Dicks.) Hornsch., Flora 2: 93. 1819. Protologue: England. Prope Halifax, in comitatu Eboracensi.

Bryum spectabile C. Müll., Syn. Musc. Frond. 2: 583. 1851. Webera spectabilis (C. Müll.)  Besch., Mém. Soc. Sci. Nat. Cherbourg 16: 196. 1872. Pohlia spectabilis (C. Müll.) Broth., Nat. Pflanzenfam. 1(3): 547. 1903. Protologue: Costa Rica. America centralis, Costa Rica, elevatione 5000–8000': A. S. Oersted [157b], mens. Febr. et Apr. 1847.

Bryum integridens C. Müll., Syn. Musc. Frond. 1: 338. 1848. Webera integridens (C. Müll.) Besch., Mém. Soc. Sci. Nat. Cherbourg 16: 196. 1872. Pohlia integridens (C. Müll.) Broth., Nat. Pflanzenfam. 1(3): 547. 1903. Protologue: Mexico, C. Ehrenberg.

Pohlia zacatecana Williams, Bryologist 26: 33. 1923. Protologue: Mexico. Collected between Bolanos and Guadalajara, Zacatecas, Sept. 20, 1897, by J. N. Rose.

Plants slender to medium-sized, dull, yellow-green to brownish, in loose tufts. Stems 5–25 mm, dark red, simple or irregularly forked; rhizoids reddish brown, papillose-roughened. Leaves distant or crowded, 0.9–1.7 mm long, erect to erect-spreading, not contorted when dry, lanceolate, not decurrent; apices acute; margins plane below, plane or narrowly reflexed above, serrulate to serrate above, not decurrent; costa yellow above, reddish at base, percurrent to shortly excurrent; upper cells narrowly linear-rhomboidal, thick-walled, 45–85 x 6–8 μm, marginal cells longer and narrower, basal cells longer, broader and laxer, narrowly rectangular to rhomboidal. Paroicous. Perigonia terminal. Setae single, 15–30 mm long, yellowish red. Capsules erect to inclined, 3–7 mm long, elongate, narrowly pyriform, neck well-developed, narrowed from the urn; exothecial cells elongate-rectangular, smooth, with slightly sinuose walls; stomata superficial; opercula conic-apiculate, 0.5 mm long; annuli of 2–3 rows of cells; exostome teeth yellow to red-brown, narrowly triangular, densely papillose above, papillose below, endostome hyaline, basal membrane ½ the exostome length, segments keeled, narrowly perforate, cilia short or long and nodose. Spores 15–25 μm, papillose.

 

 

 
 
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