Parepichloë cinerea (Berk. & Broome) J.F. White & P.V. Reddy

Synonyms

Epichloë cinerea Berk. & Broome

Description

Stroma enveloping the entire inflorescence, cylindrical, 13-33 x 1.5-2 mm, black, leathery, minutely papillate, and consisting of closely packed pseudoparenchyma with an outer dark layer.

Perithecia develop over the stroma, ovoid-ellipsoid, 200-320 x 86-168 µm, gregarious, with papillate periphysate ostiola.

Asci in basal aparaphysate fascicles, cylindrical, 112-156 x 3-4 µm, shortly stipitate, 8-spored, unitunicate with a slightly thickened apex.

Ascospores 8 per ascus, filiform, 86-108 x 1-1.5 µm, hyaline, multiseptate, often breaking up into one or few-celled fragments (part-spores).

Hosts
   
Host family: Poaceae
   
Host species: Sporobolus elongatus
Sporobolus indicus

Distribution

NSW, QLD

Comments

Cooke (1892) listed Epichloë cinerea “On various grasses. Queensland” in his Handbook of Australian Fungi, providing a very basic description with no morphological details. This fungus has been found only occasionally in Queensland and New South Wales, and always on species of Sporobolus. No asexual fructifications associated with Parepichloë sexual state were observed on any specimen in Australian herbaria, a feature of the genus which separates it from Epichloë (whose species produce a Neotyphodium-like asexual state) according to Bischoff and White (2003).

Highslide JS
ParepichloŽ cinerea on Sporobolus sp.
Highslide JS
ParepichloŽ cinerea on Sporobolus sp. - BRIP 10762.
Scale bar = 1 cm.
Highslide JS
ParepichloŽ cinerea on Sporobolus sp. - BRIP 21183. Scale bar = 1 cm.
Highslide JS
ParepichloŽ cinerea on Sporobolus sp. Scale bar = 1 cm.
Highslide JS
ParepichloŽ cinerea on Sporobolus sp. - BRIP 21183.
Scale bar = 100 µm.
Highslide JS
ParepichloŽ cinerea on Sporobolus sp. - BRIP 21183. Scale bar = 20 µm.
Highslide JS
ParepichloŽ cinerea on Sporobolus sp. - BRIP 21183.
Scale bar = 20 µm.
Highslide JS
ParepichloŽ cinerea on Sporobolus sp. - BRIP 21183.
Scale bar = 20 µm.
Highslide JS
Parepichloë cinerea on Sporobolus elongatus.
Highslide JS
Parepichloë cinerea on Sporobolus elongatus.
Highslide JS
Parepichloë cinerea on Sporobolus elongatus.
Scale bar = 1 mm.