Chrysomyxa ledi (Albertini & Schweinitz) de Bary, 1879

on Picea

gall

Aecia on yellow spots, in one or two rows, on otherwise not galled current-year’s needles. Spores 15-28 x 20-38 µm.

spermogonia, aecia

Pinaceae, monophagous

Picea abies, engelmannii, glacua, mariana, obovata, rubens, sitchensis.


on Rhododendron

gall

uredinia and telia at the underside of the previous year’s leaf. Uredinia orange, telia blood red. Teliospores formed in chains, 1-celled, thin-walled. The fungus is not systemic, only individual leaves are infected.

uredinia, telia

Ericaceae, narrowly oligophagous

Rhododendron groenlandicum, tomentosum.

A reference to Rhododendron ferrugineum and hirsutum by Negrean perhaps rather applies to Chrysomyxa rhododendri.

notes

Similar to Chrysomyxa woronini, but differs by the absence of the extreme galling of Picea.

references

Brandenburger (1985a: 20), Buhr (1964b), Crane (2001a), Feau, Vialle, Allaire ao (2011a), Gäumann (1957a), Maier, Begerow, Weiß & Oberwinkler (2003a), Negrean (1996b, 1997a), Nierhaus-Wunderwald (2000a), Poelt & Zwetko (1997a), Termorshuizen & Swertz (2011a).

mod 13.viii.2018