Sporisorium lanigeri (Magnus) Ershad

Synonyms

Sorosporium ladharense Syd.
Sorosporium pretoriense Zundel (as "pretoriaense")
Sphacelotheca columellifera (Tul. & C. Tul.) Yen
Sphacelotheca concentrica Zundel
Sphacelotheca consueta Syd.
Sphacelotheca cymbopogonis W.Y. Yen
Sphacelotheca cymbopogonis-colorati Mundk. & Thirum.
Sphacelotheca furcata (Pat. & Hariot) Pat. & Hariot
Sphacelotheca lanigeri (Magnus) Maire
Sphacelotheca moggii Zundel
Sphacelotheca mutila Mundk. & Thirum.
Sphacelotheca natalensis Zundel
Sphacelotheca schoenanthi (Syd. & P. Syd. & Butler) Zundel
Sphacelotheca yenii Zundel
Sporisorium cymbopogonis-colorati (Mundk. & Thirum.) Kakishima & Ono
Sporisorium lanigeri (Magnus) Vánky
Sporisorium martinii Bag & Agarwal (as "martinae")
Ustilago furcata Pat. & Hariot
Ustilago lanigeri Magnus
Ustilago schoenanthi Syd. & P. Syd. & Butler

Description

Sori destroying the racemes, ±hidden by the enveloping spathae, cylindrical, tapering to the apex, 5–16 mm long, 1–2 mm wide, at first covered by a thick pale brown peridium that ruptures irregularly exposing the dark brown semi-agglutinated to powdery mass of spore balls, spores and sterile cells surrounding a stout tapering rarely flagelliform sometimes bifurcate central columella.

Spore balls globose, ellipsoidal to irregular, 40–140 × 30–120 µm, dark reddish brown to opaque, composed of numerous spores that separate by pressure.

Spores globose, subglobose, ellipsoidal to slightly irregular, often slightly compressed, 6–9 × 5.5–8.0 µm, yellowish to reddish brown; wall uniformly 0.5–1.0 µm thick, apparently smooth to finely and moderately densely verruculose-echinulate; spore profile smooth to finely wavy.

Sterile cells in irregular groups; individual cells subglobose, ellipsoidal to irregular, 7–20 µm long, hyaline to pale yellowish brown-tinted; wall 1.0–1.5 µm thick, smooth.

Hosts
   
Host family: Poaceae
   
Host species: Cymbopogon ambiguus A.Camus
Cymbopogon bombycinus (R.Br.) Domin
Cymbopogon obtectus S.T.Blake
Cymbopogon refractus (R.Br.) A.Camus

Distribution

States & Territories: NSW, NT, QLD, SA, WA

Comments

Sporisorium lanigeri is the most commonly collected smut fungus on Cymbopogon in Australia. There is considerable variation in sorus and spore morphology between Australian collections indicating that it may be a species complex. At some locations it occurs with S. mutabile.