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 verrucuose; pedicel short.

hostplants

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), González Fragoso (1922a, 1924a, 1925a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a) Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kruse (2014a), Losa España (1942a), Termorshuizen & Swertz (2011a), Tóth (1994a), Unamuno (1941a, 1942a).

27/05/2017

mod 11.viii.2017