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Remarks (internal):The specimens from British Columbia represent a considerable northward extension from Washington State and C. alaskana is a new host. Likewise the collections from Newfoundland and Quebec extend the known distribution eastward from New York (DAOM 77261, fig. 4). Elsewhere in U.S.A. the rust is recorded (Index of Plant Diseases in United States, Agric. Hdbk. No. 165, 1960) from Montana, California and Oregon (DAOM 77263 C. scouleri Hook. Fig. 1) P. campanulae has been recorded from west Greenland (H.B. Gjaerum, Rep. Tott. Mycol. Inst. (Japan) 10: 155-161. 1971) on Campanula unifiora L. which also occurs in the Canadian Arctic. In Europe this rust is apparently more common than in North America and it is also known in Japan. Material from both areas is represented in DAOM and compares favourably with the Canadian specimens.
Puccinia novae-zembliae J¢rst. (= P. campanulae novae-zembliae (J¢rst.) Arth.) is a microform species parasitizing C. uniflora in arctic environments but is unknown in Canada. Gjaerum (op. cit.) lists it from west Greenland and his illustrations of the teliospores show morphological differences from teliospores of P. campanulae: broader (more robust) spores with thicker walls and without discernable papillae.
In the Canadian material examined, all specimens showed heavy infection of lower stems, petioles and leaves adjacent to ground level and much fewer telia on upper leaves and petioles.
Rusted plants may also bear a second rust, Coleosporium campanulae (Pers.) Lév. (see Fungi Canadenses No. 218).
Description type:Non-original description 
Description:Puccinia campanulae Carm. ex Berk. in Smith, Engl. Fl. 52: 356. 1836.
Pycnia, Aecia, Uredinia unknown. Telia dark brown, pulverulent, hypophyllous, also petiolicolous and caulicolous. Teliospores ellipsoid to oblong, moderately constricted at septum, apex round to obtuse, base slightly tapered, 27-43 x 13-20 µm; wall pale yellow to pale yellow-brown, 1.6 µm thick at sides, 2.1-4.2 µm at pores by the presence of small, abrupt papillae, very minutely verrucose, less conspicuously so in lower cell, pores apical and septal with papillae slightly paler than wall; pedicel hyaline, fragile, breaking at 10 µm or less.
Host: Campanulaceae: Campanula spp.
Distribution: Newfoundland, Quebec, British Columbia.
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