Uromyces lapponicus Lagerhein, 1890

on Astragalus

gall

no host plant alternation; no uredinia. Spermogonia epiphyllous. Aecia hypophyllous, covering a large part of the leaf, cupulate, yellow; peridium frayed. Telia brown, hypophyllous, pulverulent, often on rachis and petiole. Teliospores one-celled, thin-walled with a low apical papilla and a short hyaline, deciduous pedicel. Fresh teliospores are smooth, but dried ones clearly are verrucose, the warts especially apically in short rows. The length of the spores is (19)21-25(30) µm. The fungus is systemic and hibernates in the below-ground parts of the plant; infected plants look pale and diseased.

hostplants

Fabaceae, narrowly oligophagous

Astragalus alpinus, australis, frigidis; Oxytropis campestris, jacquinii.

notes

species with an alpine distribution.

references

Blumer (1946a), Brandenburger (1985a), Buhr (1964b), Gäumann (1959a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Mayor (1967a).

mod 12.viii.2018