Puccinia sessilis Schröter, 1870

on non-graminoid monocots

Puccinia sessilis on Arum maculatum

Arum maculatum, Cotessen ©
Cor Zonneveld

Puccinia sessilis: aecia

aecia

Puccinia sessilis galls

Dactylorhiza majalis ssp. majalis, Vlaardingse Vlietlanden: plant with unripe aecia © Ben van As

Puccinia sessilis aecia

ripe aecia

Puccinia sessilis aecia, detail

detail

Puccinia sessilis

Polygonatum multiflorum, Dronten: upperside, with spermogonia © Arnold Grosscurt

Puccinia sessilis

underside of the same leaf, with aecia

Puccinia sessilis on Polygonatum multiflorum

Polygonatum multiflorum, Dronten: ripe and unripe aecia; © Arnold Grosscurt

Puccinia sessilis: spermogonia on Arum maculatum

Arum maculatum, Belgium, prov. Namur, Viroinval: spermogonia; © Stéphane Claerebout

gall

spermogonia amphigenous, orange, often visible between the aecia. Aecia hypophyllous, cup-shaped, with a white peridium and an orange mass of spores.

spermogonia, aecia

Amaryllidaceae, Araceae, Asparagaceae, Melianthaceae, Orchidaceae, narrowly polyphagous

Allium angulosum, ampeloprasum, ascalonicum, cepa, fistulosum, schoenoprasum, scorodoprasum, ursinum; Anacamptis coriophora, morio, palustris; Arum creticum, italicum & subsp. neglectum, maculatum, orientale subsp. danicum; Convallaria majalis; Dactylorhiza fuchsii, incarnata, maculata, majalis, praetermissa, sambucina, traunsteineri; Galanthus nivalis; Gymnadenia conopsea; Leopoldia comosa, tenuiflora; Leucojum aestivum, vernum; Maianthemum bifolium; Muscari racemosum; Narcissus tazetta; Neotinea ustulata; Neottia ovata; Ophrys apifera, sphegodes; Orchis mascula, militaris, purpurea; Paris quadrifolia; Platanthera bifolia, chlorantha; Polygonatum hirtum, multiflorum, odoratum, verticillatum.


on Phalaris etc

Puccinia sessilis: teliospores

Phalaroides arundinacea, from González Fragoso (1924a): teliospores

gall

uredinia and telia amphigenous. Uredinia yellowish brown, soon naked, with rotund unicellular spores; ± 7 germination pores. Telia small, pulvinate, black; spores club-shaped, two-celled, 12-22 x 30-60 µm.

uredinia, telia

Poaceae, narrowly oligophagous

Drymochloa sylvatica; Festuca ovina; Phalaris canariensis; Phalaroides arundinacea.

Phalaris/Phalaroides are the most important hostplants.

synonyms

Puccinia angulosi-phalaridis Poeverlein, 1924; P. convallariae-digraphidis Klebahn, 1869; P. digraphidis Soppitt, 1980; P. orchidearum-phalaridis Klebahn, 1897; P. phalaridis Plowright, 1888; P. schmidtiana Dietel, 1896; P. winteriana Magnus, 1894.

notes

P. smilacearum-festucae Mayor, 1922 differs from sessilis only in slightly different measurements of the teliospores (12-23 x 35-56 µm); the species would live on Convallaria, Paris and Polygonatum, and alternate with Drymochloa sylvatica; whether it really is a an autonomous species is doubtful.

A similar doubt exists over P. festucina Sydow & Sydow, 1912 (Leopoldia comosa, tenuiflora, Muscari racemosum / Festuca ovina).

parasite

Tuberculina persicina.

references

Brandenburger (1985a), Buhr (1964a, 1965a), Dietrich (2013a), Ellis & Ellis (1997a), Gäumann (1959a), González Fragoso (1924a), Hafellner (1980a), Henderson (2000a, 2004a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Mayor (1967a), Parolo, Rodolfi, Picco & Rossi (2007a), Poelt & Zwetko (1997a), Redfern & Shirley (2011a), Termorshuizen & Swertz (2011a), Vanderweyen & Fraiture (2011a), Wilson & Henderson (1966), Wołczańska (2008a), Woods, Stringer, Evans & Chater (2015a).

mod 19.vii.2019