about this key identify a rust fungus browse rust fungi host index records & references  

Puccinia flavescens McAlpine

Description
Uredinia on upper leaf surface, subepidermal, erumpent pulverulent, linear, yellowish brown, peridium present.

Urediniospores globose, subglobose or ellipsoidal, yellowish brown, 21‒24 × 22‒25 μm; wall 2‒2.5 μm thick, finely echinulate, with 5‒6 scattered germ pores.

Telia on both leaf surfaces, formed from uredinia, subepidermal, erumpent, linear, black, peridium present.

Teliospores cylindrical or clavate, apex acuminate or rounded, 2 to 3 celled, reddish brown, 35‒47 × 20‒26 μm; wall 2.5‒3 μm thick at sides, 4‒8 μm thick at apex, smooth, pedicel persistent, tinted, up to 72 μm.

Hosts
Host family: Fabaceae
Host species: Austrostipa sp.

Distribution
WA

Comments
McAlpine (1903) described P. flavescens from Austrostipa (as Stipa) flavescens, which is indigenous to Australia.