Puccinia imperatae (Magnus) Poirault 1913

on Imperata

Puccinia imperatae: uredinium (section)

Imperata cylindrica, from González Fragoso (1924a): section through an uredinium

gall

no host alternation, uredinia and telia. Uredinia amphigenous, pale yellow, long covered by the epidermis, ultimately pulverulent, often containing tubular paraphyses. Urediniospores 18-24 x 23-34 µm with 4 equatorial germination pores; wall apically more or less thickened. Telia amphigenous, mostly in rows, pulverulent, chestnut brown. Teliospores 2-celled, almost globular to elliptic, 19-26 x 30-45 µm; pedicel 80-125 µm, persistent, hyaline to yellowish.

uredinia, telia

Poaceae, monophagous

Imperata cylindrica.

references

Baka & Rabei (2013a), Brandenburger (1985a: 844), Gäumann (1959a), González Fragoso (1924a), Savchenko, Heluta, Wasser & Nevo (2014d).

30/05/2017

mod 17.vii.2017