Carthamus caeruleus, from González Fragoso (1924a): teliospores

gall

No hostplant alternation, only telia: black, pulverulent, soon naked, mainly hpophyllous, also on the petioles, not associated with leaf spots. Golden yellow urediniospores are formed among the teliospores; they measure 19-24 x 24-31 µm and ha 3-4 germination pores that not are capped by a papilla. Teliospores two-celled, oval, almost smooth, 17-24 x 26-31 µm; pedicel almost entirely hyaline, deciduous, up to 40 µm.

hostplants

Asteraceae, monophagous

Carthamus carduncellus, caeruleus, mitissimus.

references

Gäumann (1959a), González Fragoso (1924a), Mayor (1973a).

16/04/2017