Anthracocystis glutinosa (Zundel) McTaggart & R.G. Shivas

Synonyms

Sorosporium andropogonis (Patel & N.B. Kulk.) Thirum. & Neerg.
Sorosporium glutinosum Zundel
Sorosporium guaraniticum (Speg.) L. Ling
Sphacelotheca guaranitica (Speg.) Zundel
Sporisorium glutinosum (Zundel) Vánky
Sporisorium guaraniticum (Speg.) Vánky
Tolyposporium andropogonis M.K. Patel & N.B. Kulk.
Ustilago guaranitica Speg.

Description

Sori destroying the entire inflorescence, elongate-cylindrical, 40–90 mm long, 0.5–1.0 mm wide, partly enclosed by the terminal leaf sheath, at first covered by a yellowish brown peridium that shreds and flakes away exposing the black granular-powdery mass of spore balls mixed with several long slender columellae.

Spore balls subglobose, ovoid, elongate or slightly irregular, loose but rather permanent, 30–70 (–75) × 25–45 µm, dark reddish brown, composed of 9–25 (–40?) spores, held together by a colourless gelatinous fungal substance filling the space between the spores.

Spores subglobose, ovoid, broadly ellipsoidal or subpolyhedrally irregular. Outer spores 12.0–18.5 × 10.5–15.0 µm, reddish brown; wall unevenly thick, 1.0–2.5 µm, the free surface rather densely and ±prominently verrucose-echinulate; spore profile wavy to serrulate; contact sides apparently smooth. Inner spores somewhat smaller, paler, with a thin c. 0.5 µm smooth wall.

Sterile cells not seen.

Hosts
   
Host family: Poaceae
   
Host species: Heteropogon contortus (L.) Roem. & Schult.
Heteropogon triticeus (R.Br.) Stapf ex Craib

Distribution

States & Territories: NT, QLD