Sporisorium hainanae (Zundel) L. Guo


Sphacelotheca hainanae Zundel
Sphacelotheca tonglinensis var. hainanae (Zundel) L. Ling


Sori in all ovaries of an inflorescence, ellipsoidal, 2–4 mm long, 0.5–1.5 mm wide, ±hidden by the floral envelopes, at first covered by a light brown peridium that ruptures irregularly revealing a dark brown powdery mass of spores and sterile cells surrounding a simple central columella, often with thin short or long apical branches.

Spores when mature solitary, globose, subglobose to broadly ellipsoidal, 8–10 × 6.5–9.0 µm, yellowish brown; wall uniformly c. 0.5 µm thick, moderately densely low-echinulate; spore profile wavy to finely serrulate.

Sterile cells in irregular groups; individual cells subglobose, ellipsoidal, usually rounded-irregular with 1 or several slightly flattened sides, 8–16 µm long, subhyaline to pale yellowish brown-tinted, collapsed in old specimens; wall 0.5–1.5 µm thick, smooth.

Host family: Poaceae
Host species: Ischaemum rugosum Salisb.


States & Territories: QLD


In Australia, known only from a single collection (mixed with S. ischaemi-rugosi) on Ischaemum rugosum from Horn Island in the Torres Strait, far-northern Qld; also in South and East Asia.