Pilocintractia Vánky

Type

Pilocintractia fimbristylidicola (Pavgi & Mundk.) Vánky on Fimbristylis bisumbellata (Forssk.) Bubani

Synonyms

Cintractia Cornu

Description

Sori in some flowers of a spikelet in species of Fimbristylis (Cyperaceae), forming hard black globose bodies around the nuts, without a peridium, with or without a stroma but with sterile filaments.

Spores pigmented (brown, without violet or orange-yellow tints), agglutinated, interwoven by hyaline sterile fungal filaments with protoplasm and a gelatinised wall. Spores produced in radially arranged cup-shaped (in longitudinal section U-shaped) pockets with a wall formed of pigmented tightly packed sterile fungal cells with a thick non-gelatinised wall radiating from the basal part of the sori into the spore masses.

Spore germination resulting in phragmobasidia. Basidial cells producing basidiospores or hyphae.

Host-parasite interaction by intracellular hyphae coated by an electron-opaque matrix.

Septa poreless at maturity.

Comments

A genus of two species on Fimbristylis spp. in Australia, South Asia and Central and South America. Pilocintractia has gelatinised, sterile fungal filaments between the mature spores and thereby differs from other genera of the Cintractia s. lat. complex (Piepenbring et al., 1999).

Species in Australia
 
Pilocintractia fimbristylidicola