Original Research

Studies in the genus Riccia (Marchantiales) from southern Africa. 2. A new species of the section Pilifer: R. sarcosa

O. H. Volk, S. M. Perold
Bothalia | Vol 16, No 1 | a1056 | DOI: https://doi.org/10.4102/abc.v16i1.1056 | © 1986 O. H. Volk, S. M. Perold | This work is licensed under CC Attribution 4.0
Submitted: 23 October 1986 | Published: 22 July 1986

About the author(s)

O. H. Volk, Botanische Anstalten d. Univ. Wu, Germany
S. M. Perold, Botanical Research Institute, Department of Argiculture & Water Supply, South Africa

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Abstract

Riccia sarcosa Volk & Perold, a new species endemic to southern Africa is described. This species belongs to the section  Pilifer Volk (1983), which now comprises 8 species characterized by the dorsal epithelium consisting of loose cell pillars.  R. sarcosa is recognized by the distinct white margins of the thallus, by inconspicuous hyaline scales that do not extend above the thallus margins and by the spore ornamentation consisting of round, deep-set areolae or foveae.


Keywords

dorsal epithelium; Marchantiales; Riccia sarcosa sp. nov.; section <i>Pilifer</i>

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