Aizoago tetragonioides Vánky & R.G. Shivas

Description

Sori in the fruits of Tetragonia tetragonioides form bullate swellings filled by dark reddish brown, semi-agglutinated spore masses.

Spores subglobose, usually broadly ellipsoidal, rarely slightly irregular, pyriform or elongated, (15–)16–24 × 20–30(–34) µm (including the sheath), pale to medium dark yellowish brown; wall several layered, 4–7 µm thick, composed of a hyaline, evenly c. 0.5 µm thick endospore, a dark yellowish brown, ornamented, evenly 1–1.5 µm thick exospore (without ornamentation), and a paler sheath of even or uneven thickness. Exospore delicately, irregulaly reticulate, meshes complete or incomplete, of various shape and size, muri thin, in median view appearing as fine, narrow, radial, 1.5–3 µm long spines, 28–36 on the spore circumference, completely covered by the sheath. Sheath 1.5–4 µm thick, one or two layered; one-layered sheath pale yellowish brown; two-layered sheath with an outermost, thin, paler layer. Spores ocassionally provided with one or two, oppositely situated, short, hyaline appendages, pyriform or lemon-shaped, with a narrow pore penetrating the spore wall.

Hosts
   
Host family: Aizoaceae
   
Host species: Tetragonia tetragonioides (Pallas) Kuntze

Distribution

States & Territories: NSW