Original Research

Studies in the genus Riccia (Marchantiales) from southern Africa. 21. R. stricta, R. purpurascens and R. fluitans, subgenus Ricciella

S. M. Perold
Bothalia | Vol 20, No 2 | a915 | DOI: https://doi.org/10.4102/abc.v20i2.915 | © 1990 S. M. Perold | This work is licensed under CC Attribution 4.0
Submitted: 16 October 1990 | Published: 17 October 1990

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Abstract

Lindenberg (1836) regarded and published Riccia stricta as a variety of R. fluitans L. Subsequently, Nees (1838) and Gottsche et al. (1846) also treated it as a variety. Trevisan (1877) raised its rank and published the epithet,  Ricciella stricta Trevis.Ricciella is, however, regarded as a subgenus; Ricciella stricta is, therefore, transferred to Riccia stricta (Lindenb.) Perold.It is described in detail and illustrated.  R. purpurascens Lehm. & Lindenb., a related endemic species, is also more fully described than before and illustrated.  R. fluitans L. apparently does not occur naturally in southern Africa. As far as is known, a single local specimen of it was introduced.


Keywords

Marchantiales; <i>Riccia fluitans</i>; <i>R. purpurascens</i> <i>R. stricta</i> southern Africa, subgenus <i>Ricciella</i>; taxonomy

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