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Published In: Bericht über die Thätigkeit der St. Gallischen Naturwissenschaftlichen Gesellschaft 1870–71: 422 (Gen. Sp. Musc. 1: 126). 1872. (Ber. Thätigk. St. Gallischen Naturwiss. Ges.) Name publication detail
 

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Acceptance : Accepted
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Discussion:

This robust moss is likely to be confused only with Campylopus standleyi or C. subcuspidatus. Typically C. standleyi has leaves less than 15 mm long, porose juxtacostal basal cells, rectangular, firm-walled and not particularly enlarged basal cells above the alar cells, linear marginal basal cells, and leaves serrulate only at the extreme apex. Some collections of C. standleyi closely approach C. jamesonii (see discussion under C. standleyi). Campylopus subcuspidatus has strongly porose leaf cells, leaves serrulate only at the extreme apex, and a short basal border of hyaline, linear cells.
Illustrations: Hooker (1837, Pl. 179 1–9); Hegewald and Hegewald (1977, Figs. 9–14); Frahm (1978, Pl. 14); Frahm (1979, p. 176); Frahm (1985, Fig. 50); Frahm(1991a, Fig. 80).
Habitat: Terrestrial, on shady road banks; 1500–3220 m.
Distribution in Central America: HONDURAS. Lempira: Allen 11592 (MO, TEFH). COSTA RICA. San José: Croat 32887b (MO).
World Range: Mexico; Central America; Western and Northern South America, Brazil; West-Central Tropical, East Tropical, South Tropical and Southern Africa, West Indian Ocean.

 

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Campylopus jamesonii (Hook.) Jaeg., Ber. Tätigk. St. Gallischen Naturwiss. Ges. 1870–71: 422. 1872. Dicranum jamesonii Hook., Icon. Pl. 2: 179. 1837. Type. Ecuador, Surucucho, Jameson.

Campylopus standleyi var. lutescens Bartr., Contr. U.S. Natl. Herb. 26: 60. 1928. Type. Costa Rica, Prov. San José, Santa Maria de Dota, Standley & Valerio 43372 (FH, NY, US).

Plants robust, greenish yellow, growing in dense mats; stems moderately to densely tomentose, to 12 cm long, simple to sparingly branched. Leaves spreading below, erect-spreading above, concave when wet, flattened when dry, lanceolate-setaceous, to 20 mm long, serrate in upper ¼–½; costa excurrent, concolorous, to 4/5 the leaf width at base, smooth to lightly mammillose, in cross section guide cells well-developed, large ventral hyalocysts present, dorsal stereids well-developed; apical cells quadrate; median cells firm-walled, quadrate; basal cells near costa enlarged, firm-walled, not porose, elongate, those toward the margins smaller, firm-walled quadrate to rectangular, those at the margin narrower but not forming a distinct border, cells just above the alar cells enlarged, lax, square to short rectangular, frequently bulging; alar cells well-developed in large groups extending to the costa and frequently excavate. Sporophyte not seen.

 

 

 
 
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