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Table 2 Comparative features of the genera Exallosorus , Homoeostrichus , and Zonaria

From: Morphological and molecular characteristics of Homoeostrichus formosana sp. nov. (Dictyotaceae, Phaeophyceae) from Taiwan

  Exallosorus Homoeostrichus Zonaria
No. of cell layers 4–6 2–4–7 4–12
No. of cortex / medulla in transverse section 1 1 2
Sporangia Sorus Single, Sorus Sorus
No. of stalk cells 1 1 or more 0
No. of spores 4 4 8
Indusium + - +
Paraphyses + or - + or - +
Color Brown Brown White
Structure Spherical cells Spherical cells Elliptic cells in upper, spherical cells in middle and base
Distribution Australia and South Africa Australia and Taiwan widespread
References b, c a, b, c, this study a, b, c
  1. ,1987; b: Phillips et al., 1994; c: Phillips, 1997; +: Present; -: Absent.