Puccinia cruchetiana Mayor, 1926

on Silybum

gall

No host plant alternation; no spermogonia or aecia. Uredinia and telia mostly hypophyllous, soon naked, pulverulent, brown and dark brown, respectively. Uredinioapores 17-21 x 25-28 µm, wall brown with 4 germination pores. Teliospores 2-celled, on a short, deciduous pedicel; germination pore of the lower cell close to the pedicel attachment.

hostplants

Asteraceae, monophagous

Silybum marianum.

references

Gäumann (1959a), Klenke & Scholler (2015a), Termorshuizen & Swertz (2011a).

01/01/2017

mod 1.xii.2017