Urocystis bolivarii (Pass.) Ainsw. & Sampson (as "bolivari")

Synonyms

Tuburcinia bolivari (Bubák & Gonz. Frag.) Gonz. Frag.
Tuburcinia lolii Kawecka-Starmachowa
Tuburcinia occulta var. bolivari (Bubák & Gonz. Frag.) Cif.

Description

Sori in leaves, sheaths, culms and inflorescences as long streaks between the veins, at first lead-coloured, covered by the epidermis which soon ruptures exposing the blackish brown powdery mass of spore balls.

Spore balls globose, ovoid to irregular, 16–44 µm diam., composed of 1–6 spores almost completely enveloped by sterile cells.

Spores globose, ovoid, sometimes irregular, 13.0–18.5 × 10.5–16.0 µm, light brown, smooth.

Sterile cells globose to irregular, 5–12 µm diam., yellowish brown.

Hosts
   
Host family: Poaceae
   
Host species: Lolium loliaceum (Bory & Chaub.) Hand.-Mazz
Lolium multiflorum Lam.
Lolium perenne L.
Lolium rigidum Gaud.

Distribution

States & Territories: NSW, SA, VIC, WA