Enterosora - Polypodiaceae

Enterosora sprucei (Hook.) Parris






Polypodium sprucei Hook.
Polypodium gilpinae Baker
Grammitis gilpinae (Baker) Tardieu
Enterosora gilpinae (Baker) L.E.Bishop
Polypodium microphyllum Baker
Polypodium pseudopoolii Reimers

Common name


Rhizome ± erect, not branched, radial, stipes in whorls of 3, not articulated to rhizome, phyllopodia absent; rhizome scales broadly ovate to narrowly lanceolate in outline, with simple eglandular hairs 0.1–0.3 mm long solitary at apex and sometimes scattered on margin. Stipe 3–7 mm long, with simple eglandular hairs 1.7–2.8 mm long and 1–2-forked translucent to pale red-brown catenate hairs 0.1–0.3 mm long. Lamina narrowly elliptic to linear-elliptic in outline, 37–101 mm long, 3–7 mm wide, apex rounded to bluntly pointed, long-attenuate at base, entire or crenulate, lobes 0.1–4 mm long, divided up to 2/3 of distance to mid-vein; with simple eglandular hairs 1.2–3 mm long on both surfaces of lamina and on margin, translucent 1–2-forked catenate hairs 0.1–0.7 mm long on abaxial surface, and translucent catenate simple hairs ± 0.1 mm long on abaxial surface; lateral veins simple or 1-forked, rarely pinnately divided in lobes, free. Sori usually in 2 rows, 1 each side of mid-vein, rarely up to 4 on each lobe, in apical 1/5 to 4/5 of lamina, 1–17 in each row.




On trees, in montane forest on basement complex rocks (granulites).

Distribution worldwide

Africa, Madagascar, Mexico, Costa Rica, Venezuela, Peru.

Distribution in Africa

Tanzania .

Growth form

Epiphytic, lithophytic.


  • Parris, B.S. (2005) Grammitidaceae.Flora of Tropical East Africa, Page 15. (Includes a picture).
  • Roux, J.P. (2009) Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23, South African National Biodiversity Institute, Pretoria. Pages 153 - 154.