Megalastrum Holttum


Description of the genus

Rhizome erect, massive. Fronds 2-to 4- pinnate, veins free. Pinna costae without raised edges on the upper surfaces. Upper surface of the costae densely set with short multicellular hairs. Sori round; indusia kidney-shaped, bearing glands and hairs.


Derivation of name:  mega: large, lastrea: referring to the fern genus 'Lastrea'; a large Lastrea.

Comment: Megalastrum is sometimes included in Ctenitis, we consider them to be 2 separated genera.

Worldwide: c. 30 species, neotropical distribution.



We have 1 taxa in the database for Megalastrum.

  • Megalastrum lanuginosum (Willd. ex Kaulf.) Holttum


  • Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011) Ferns of Southern Africa, A comprehensive guide. Struik Nature.
  • Roux, J.P. (2001) Conspectus of Southern African Pteridophyta.Southern African Botanical Diversity Network Report, 13: 1-222.