Isoetaceae
Isoetes abyssinica Chiov. Isoetes aequinoctialis Welw. ex A. Braun Isoetes alstonii C.F.Reed & Verdc. Isoetes biafrana Alston Isoetes capensis A.V. Duthie Isoetes durieui Bory Isoetes eludens J.P. Roux Isoetes giessii Launert Isoetes hallei Eb. Fisch. & Lobin Isoetes histrix Durieu ex Bory Isoetes jaegeri Pitot Isoetes labri-draconis N.R. Crouch Isoetes melanotheca Alston Isoetes nigritiana A. Braun Isoetes nigroreticulata Verdc. Isoetes pichisermollii Eb.Fisch. & Lobin Isoetes pitotii Alston Isoetes rwandensis Eb. Fisch. & Lobin Isoetes schweinfurthii A. Braun ex Baker Isoetes spinulospora Jermy & Schelpe Isoetes stellenbossiensis A.V. Duthie Isoetes stephanseniae A.V. Duthie Isoetes subinermis (Durieu) Cesca & Peruzzi Isoetes tenuifolia Jermy Isoetes toximontana L.J. Musselman & J.P. Roux Isoetes transvaalensis Jermy & Schelpe Isoetes velata A. Braun Isoetes welwitschii A. Braun Isoetes wormaldii Sim Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011) Ferns of Southern Africa, A comprehensive guide. Struik Nature.
Jacobsen, W.B.G. (1983) The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria.
Roux, J.P. (2001) Conspectus of Southern African Pteridophyta.Southern African Botanical Diversity Network Report, 13: 1-222.
Schelpe, E.A.C.L.E. (1970) Pteridophyta.Flora Zambesiaca, 0: 1-254.
Isoetes L. - Quillworts
Photo: P. Ballings
Zimbabwe
Description of the genus
The characteristics of the stem, leaves and fertile portions are as for the family.
Derivation of name: isos: equal, etos: year; some of the submerged species in europe preserve the same outer appearance throughout the year.
Worldwide: c. 150 species, cosmopolitan apart from the Pacific Islands
We have 29 taxa in the database for Isoetes.
Literature