Campylopus pilifer Brid.

J. Florschutz-de Waard, H. R. Zielman & M. A. Bruggeman- Nannenga, 2011, Flora of the Guianas, Series C, fascicle 2., Kew: Kew Publishing : 9

8. Campylopus pilifer Brid. , Muscol. Recent, Suppl. 4: 72. 1819. Lectotype (Gradstein & Sipman 1978): Italy, Ischia, Bridel s.n. (B).

Slender plants growing in dense cushions. Stems to 5 cm high, equally foliate but often forming comal tufts with perichaetia or young innovations Stem leaves appressed when dry, erect when moist, lanceolate, 3-6 mm long, apex broad-acute, often appearing acuminate by the involute upper margins, Costa filling more than half213 of the leaf base, excurrent in a hyaline, serrate hairpoint (variable in length and often absent in older leaves) ln cross-section with ventral hyalocysts and dorsal Stereids, at back with prominent, 2-4 cell high lamellae; comal leaves broader, oblong, cuspidate or piliferous at apex; alar cells little differentiated, sometimes partly coloured and inflated; basal laminal cells hyaline, thin-walled, longrectangular, towards margins linear, in distal direction rather abruptly Changing in the small, oval or irregularly rhombic upper laminal cells. Sporophyte (description after Frahm 1991): seta 3-5 mm long, capsules 1.5 mm long, ovoid; calyptra fringed at base.

Distribution Tropical and warm-temperate regions in N and S America, Africa, India and Europe; in the Neotropics only at higher altitudes (to 4800 m)

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Ecology: Commonly on exposed rocks or on dry soil of road banks; in the Guianas collected only once, on rotten log.

Specimen examined: Guyana, N slope of Mt. Roraima, alt. I 200- 1600 m, Gradstein 5293 (L).

Note: Variable in appearance; very typical if the spreading comal leaves are present at the end of the appressed-foliate stem, but not easy to recognize without comal; also the hyaline hairpoint is not always distinct. For differences with C. bryotropii see under that species.