Entorrhiza seminarii J. Walker

Description

Sori on the roots forming pale brown elongate-cylindrical bent often branching galls, 10–16 mm long, 1–2 mm wide, filled with pale brown agglutinated intracellular spore masses.

Spores lemon-shaped, with a papilla at one end and a short appendage on the opposite end (the remnants of the sporogenous hypha), 26–44 × 20–30 µm (including ornamentation), pale yellow to golden yellow; wall 5–8 µm thick, up to 11 thick at the papilla; surface with coarse ridges parallel to the long axis of the spore; in side view 4–7 ridges visible; viewed from the longitudinal axis, 10–14 ridges visible on the equatorial circumference; ridges often with low or prominent tubercles, in lateral view appearing wavy.

Hosts
   
Host family: Cyperaceae
   
Host species: Isolepis inundata R.Br.

Distribution

States & Territories: NSW

Comments

Walker (2007) observed that E. seminarii was distinct from the six known species of Entorrhiza with ridged spores in its combination of spore size and surface ornamentation. In particular, the smallest spores of E. seminarii were often longer that the largest spores of other taxa.