Campylopus sehnemii E.B.Bartram

  • Authority

    Frahm, Jan-Peter. 1991. Dicranaceae: Campylopodioideae, Paraleucobryoideae. Fl. Neotrop. Monogr. 54: 1-238. (Published by NYBG Press)

  • Family

    Dicranaceae

  • Scientific Name

    Campylopus sehnemii E.B.Bartram

  • Type

    Type. Brazil. Rio Grande do Sul: Campestre Montenegro, Sehnem 2310 (holotype, FH).

  • Description

    Species Description - Plants bright green, 1.5-5 cm high. Stems equally and densely foliate. Leaves appressed and slightly curled when dry, erect patent when wet, 6 mm long, broadly lanceolate, serrate at tips, widest at midleaf and contracted towards leaf base. Costa filling 1/2 of the leaf width, in transverse section with ventral hyalocysts and dorsal groups of stereids, excurrent. Alar cells weakly differentiated or not, often reddish with hyaline margins. Basal laminal cells thin-walled, hyaline, 6-9 × 40-50 µm. Upper laminal cells small, subquadrate to short rectangular, 5-6 × 9-12 µm. Sporophyte not known.

  • Discussion

    With respect to the areolation and the structure of the costa, C. sehnemii strongly resembles C. incrassatus C. Muller, a species widespread through the subantarctic. Campylopus sehnemii differs by longer leaf tips and the lack of hair-points, which is perhaps due to the different habitat on shady rocks in forests, whereas C. incrassatus grows in open habitats. Therefore, C. sehnemii is supposedly derived from the subantarctic C. incrassatus. This has a parallel in Southern Africa and Australia, where, at about the same latitude as C. sehnemii, C. incrassatus is replaced again by a closely related species, C. catarractilis (C. Müller) Paris.

  • Distribution

    Usually on sandstone rocks in shady places, rarely on rotten wood, confined to SE Brazil.

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