Puccinia xanthii Schweinitz, 1822

on Ambrosia, Xanthium

Puccinia xanthii: teliospsores

Xanthium basilei, from González Fragoso (1924a): teliospores

gall

no host alternation, uredinia are missing. Telia hypophyllous, compact, also on somewhat galled petioles and veins, large dark brown crusts; compartimentalised by narrow rows of vertical paraphyses. Spores 2-celled on short pedicels.

hostplants

Asteraceae, oligophagous

Ambrosia; Xanthium basilei, orientale & subsp. italicum, spinosum, strumarium.

references

Alaei, De Backer, Nuytinck ao (2009a), Brandenburger (1985a: 627), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Gäumann (1959a), González Fragoso (1924a), Klenke & Scholler (2015a), Negrean & Anastasiu (2006a), Savchenko, Heluta, Wasser & Nevo (2014d), Termorshuizen & Swertz (2011a), Tomasi (2014a).

mod 9.viii.2018