Puccinia albescens Greville, 1889

on Adoxa

Puccinia albescens: aecia in Adoxa moschatelllina

Adoxa moschatellina, Belgium, prov. Limburg, Heusden-Zolder © Carina Van Steenwinkel: aecia on strongly disfigured part of the plant; late April

Puccinia albescens: aecia in Adoxa moschatelllina

galled plant

Puccinia albescens: aecia in Adoxa moschatelllina

detail

Puccinia albescens: uredinia on Adoxa moschatellina

Adoxa moschatellina, Belgium, prov. Limburg, Heusden-Zolder © Carina Van Steenwinkel: uredinia, late May

Puccinia albescens:  urediniospores: spinulation

urediniospores: spinulation

Puccinia albescens: urediniospores

urediniospores, optical section

Puccinia albescens: leaf with telia

leaf with telia, upperside: no trace of malformation

Puccinia albescens: leaf with telia

underside

Puccinia albescens: leaf with telia

telia also on the petiole

Puccinia albescens: teliosporen + urediniosporen

teliospores mixed with urediniospores

gall

No host alternation. Spermogonia and aecia scattered all over the plant, pale yellow. Uredinia and telia often missing, brown, long covered by the epidermis. Telia partly develop from the uredinia. Urediniospores elliptic, 1-celled, spinulose; teliospores on a long, deciduous pedicel, 2-celled, brown, each cell with a hyaline papilla.

hostplants

Adoxaceae, monophagous

Adoxa moschatellina.

notes

The fungus is systemic; infested plants are etiolated and stunted.

references

Brandenburger (1985a), Buhr (1964b), Dauphin & Aniotsbehere (1997a), Ellis & Ellis (1997a), Gäumann (1959a) González Fragoso (1924a), Henderson (2000a, 2004a), Klenke & Scholler (2015a), Koops (2013a), Kozłowska, Mułenko & Heluta (2015a), Preece & Hick (1994a), Redfern & Shirley (2011a), Roskam (2009a), Termorshuizen & Swertz (2011a), Vanderweyen & Fraiture (2011a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).

mod 30.vii.2018