Abstract
Campylopus introflexus (Hedw.) Brid. sensu lato comprises two widespread, closely related species: tropical and warm-temperate C. pilifer Brid. (= C. polytrichoides DeNot.) and temperate southern hemispheric C. introflexus (Hedw.) Brid., which was recently introduced in Europe. Main differences are in the height of the dorsal lamellae of the leaves, in spore size and in seta length. In C. pilifer lamellae are more pronounced in tropical mountains than in lowland areas. An extreme form with lamellae up to seven cells high is C. pilifer var. lamellatus (Mont.) comb. nov. from Bolivia.
Highlights
Introflexus (Hedw.) Brid., which was recently introduced in Europe
The recent invasion of Campylopus introflexus (Hedw.) Brid. in Europe (Prahm, 1972) has renewed interest in the taxonomy of this species. It was considered an almost cosmopolitan species until Giacomini (1955) showed that two species are at hand: C. introflexus s.str., occurring in temperateregions of the southern hemisphere, large parts of America and one locality in Europe (Bretagne), and C. polytrichoides DeNot., occurring in southwestern Europe, Africa and southern Asia
U.S.A. and Central and South America, whereas C. introflexus is restricted to the temperate zone of the southern hemisphere and West and Central Europe
Summary
Introflexus (Hedw.) Brid., which was recently introduced in Europe. Main differences are in the height of the dorsal lamellae of the leaves, in spore size and in seta length. The recent invasion of Campylopus introflexus (Hedw.) Brid. The characteristics used to distinguish the two species, those of the gametophyte, have been questioned by several authors, e.g. Richards (1963), Barkman and Mabelis (1968) and Jacques and Lambinon (1968).
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