Thecaphora maireanae R.G. Shivas & Vánky


Sori replacing the seeds, globose to ovoid, 1.5–2.5 mm diam., ±hidden by the floral envelopes, filling the fruits with a pale brown granular-powdery mass of spore balls. Infection systemic; all fruits of a plant infected.

Spore balls globose, ellipsoidal, ovoid, elongate or irregular, 60–150 (–190) × 50–100 µm, yellow to pale yellowish brown, composed of tens of firmly united spores.

Spores subcuneiform, subpolyhedrally irregular, rarely ellipsoidal; in surface view 9–20 × 8.0–13.5 µm; in optical median view radially 11–21 µm long, yellow to pale yellowish brown; wall uneven, on the free surface 1.5–4.0 µm thick, including the c. 0.5 µm high warts that often fuse into an irregular pattern; wall of the contact sides c. 0.5 µm thick, apparently smooth.

Host family: Chenopodiaceae
Host species: Maireana pentagona (R.H.Anderson) Paul G.Wilson


States & Territories: VIC