Puccinia centaureae de Candolle, 1815

on Centaurea, Cyanus, etc.

Puccinia centaureae: teliospores

Centaurea jacea subsp. gaudinii, from González Fragoso (1924a): teliospores

gall

No hostplant alternation. Spermogonia orange, mainly epiphyllous, also on the petioles. Aecia are not formed. Uredinia light brown, mainly hypophyllous, on epiphyllous violet leaf spots; spores 18-25 x 21-28 µm, spinulose, with 3 equatorial pores that are not surrounded by a smooth zone. Telia as the uredinia, blackish brown, otherwise like the uredinia. Teliospores 2-celled, short-elliptic, 17-28 x 20-40 µm; cell wall densely and finely verrucose; pedicel short.

host plants

Asteraceae, narrowly oligoophagous

Centaurea alba, arenaria, aspera & subsp. gentilii, atropurpurea, bruguiereana, calcitrapa, cariensis, castellana, cheirolopha, chrysolepis, collina, diffusa, diluta, eriophora, eryngioides, fragilis, glomerata, hyalolepis, iberica, infestans, involucrata, jacea & subsp. angutifolia + banatica + gaudinii, kotschyana, litardieri, maroccana, melitensis, nana, napifolia, nervosa, nigra & subsp. carpetana, nigrescens & subsp. transalpina, ornata, oxylepis, paniculata, phrygia, & subsp. indurate + pseudophrygia + stenolepis, pullata, scabiosa & subsp. alpestris + spinulosa, procurrens, pubescens, pullata, saligna, seridis, solstitialis, sphaerocephala & subsp. polyacantha, stereophylla, stoebe & subsp. australis, sulphurea, uniflora, thuilleri, vallesiaca; Cheirolophus benoistii; Cyanus cyanoides, montanus, triumfetii & subsp. axillaris; Rhaponticoides alpina, linaresii.

Not on Cyanus segetum.

synonyms

Puccinia centaureae-carpetanae González Fragoso, 1914; P. centaureae-ornatae González Fragoso, 1914; P. centaureae-pullatae González Fragoso, 1914; P. centaueae-vallesiacae Hazslin, 1908; P. scabiosae (Hazslin) Guyot, 1951.

Puccinia centaureae of often considered identical with, or a variety of, P. calcitrapae.

references

Blumer (1946a), Brandenburger (1985a), Buhr (1964b), Gäumann (1959a), Gjaerum (1982a)m Gönczö & Révay (1981a), González Fragoso (1922a, 1924a, 1925a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a) Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kruse (2014a, 2019a), Losa España (1942a), Termorshuizen & Swertz (2011a), Tóth (1994a), Unamuno (1941a, 1942a).

mod 20.vii.2019