Drepanocladus perplicatus (Dusén) G.Roth

  • Authority

    Hedenäs, Lars. 2003. Amblystegiaceae. Fl. Neotrop. Monogr. 89: 1--107. (Published by NYBG Press)

  • Family

    Campyliaceae

  • Scientific Name

    Drepanocladus perplicatus (Dusén) G.Roth

  • Type

    Type. Argentina. Tierra del Fuego(?): Cape Fairweather, Hatcher P-45 (lectotype, NY, n.v., designated by Ochyra, 1989; isolectotypes, H, NY [n.v.], S).

  • Synonyms

    Sciaromium lacustre Herzog & P.W.Richards, Hypnum perplicatum Dusén, Cratoneuron perplicatum (Dusén) Broth., Richardsiopsis lacustris (Herzog & P.W.Richards) Ochyra

  • Description

    Species Description - Plants large; green or brownish. Stem sparsely and ± irregularly branched; pseudoparaphyllia mostly triangular or broadly triangular; axillary hairs with 1-2-celled upper part, this hyaline when young. Stem leaves straight and erect or falcate-secund, lanceolate or ovate-lanceolate or ovate or triangular-ovate, narrowing gradually to apex, not plicate, concave; apex long-acuminate; margin entire; costa single, very strong and long-excurrent; median laminal cells 23.0-213.0 × 5.0-16.0 µm, partially bistratose above (especially near margin), thin-walled or slightly incrassate, eporose, with "median leaf laminal cell length (µm)/ leaf length (mm)" ratio of 25.5-34.5; differentiated alar cells few, inflated or slightly inflated, hyaline or not, thin-walled or incrassate, eporose; alar group small, isodiametric or transverse-short-triangular, extending from leaf margin 15-50% of distance to leaf middle at insertion. [Sexual condition, perigonia, perichaetia, and sporophytes unknown.]

  • Discussion

    Drepanocladus perplicatus was reported from Peru by Delgadillo et al. (1995), Menzel (1992), and Ochyra (1986a), and from Brazil by Schafer-Verwimp (1996). Like D. longifolius, D. perplicatus is a relatively large wetland Amblystegiaceae with an excurrent costa. However, this species differs from most other members of the family in its partially bistratose leaf lamina. The differences between Drepanocladus perplicatus and D. longifolius, D. sordidus, and Warnstorfia trichophylla are given in the comments after the latter three.

    Crum & Anderson (1981: p. 952), Nyholm (1965: p. 475).

    Distribution and Ecology: Ecuador (4000 m a.s.l.), Peru (3800 m), and Brazil (2140 m). Also known from northern Chile (Lago Chungaré, Kier s.n., MO) and Patagonia. Endemic to S America. Submerged in lakes and in small brooks; one specimen was collected in a spring brook. Mineral and nutrient requirements are unknown, but are likely to parallel those in other Drepanocladus species.

  • Distribution

    Ecuador South America| Napo Ecuador South America| Brazil South America| Minas Gerais Brazil South America|