IDENTIFICATION KEY TO PUCCINIA PERS. NOM. SANCT. SPECIES GROWING ON BAMBOOS IN EUROPE 1. Teliospores mostly 35-50 µm long, with a rounded top, not dimorphic. Uredinia with capitate paraphyses, whose pedicel is septate within 20(-30) µm from the head ............................ Puccinia phyllostachydis Kusano Hosts (Europe): Phyllostachys nuda McClure, Phyllostachys viridiglaucescens Rivière & C.Rivière, and Phyllostachys sp. Distribution in Europe: Belgium (Brussels), Switzerland (Ticino) — Teliospores mostly 55-90 µm long, most of them ending with a short to long rostrum; dimorphic: a very small proportion of spores are much smaller (37-50 µm long) than the others. Uredinia without paraphyses or with capitate non-septate paraphyses ................................................................................................................... 2 2. Uredinia without capitate paraphyses. Teliospores mostly 55-77 µm long, most of them with a conical top or a short rostrum ................................................ Puccinia deutziae (Dietel) Fraiture & Vanderweyen comb. nov. Hosts (Europe): Sasa ramosa (Makino) Makino & Shibata, Semiarundinaria fastuosa Makino. Distribution in Europe: Belgium (Brussels and Meise), United Kingdom (SE England and Cornwall), Germany (Bochum) — Uredinia with capitate non-septate paraphyses. Teliospores mostly 70-90 µm long, many of them bearing a long rostrum (often destroyed or partly dissolved during germination of basidia) ................................................... ...................................................................................................................... Puccinia longicornis Pat. & Har. Hosts (Europe): Phyllostachys aurea Carrière ex Rivière & C.Rivière, Pseudosasa japonica Makino, Sasa palmata E.G.Camus, S. veitchii Rehder, S. cf. tsuboiana Makino and Semiarundinaria fastuosa Makino. Distribution in Europe: Belgium, United Kingdom (SE England and the Wales)

Published as part of Fraiture, André & Vanderweyen, Arthur, 2020, Species of Puccinia Pers. nom. sanct. (rust fungi) on Bambusoideae in Belgium and in Europe, pp. 9-20 in Cryptogamie, Mycologie 20 (2) on page 18, DOI: 10.5252/cryptogamie-mycologie2020v41a2, http://zenodo.org/record/7815032