Four new Phragmidium (Phragmidiaceae, Pucciniomycetes) species from Rosaceae plants in Guizhou Province of China Author Sun, Jing-E Department of Plant Pathology, Agricultural College, Guizhou University, Guiyang, 550025, China Author Zhang, Qian Department of Plant Pathology, Agricultural College, Guizhou University, Guiyang, 550025, China Author Luo, Wen-Mei Department of Plant Pathology, Agricultural College, Guizhou University, Guiyang, 550025, China Author Yang, Yuan-Qiao Department of Plant Pathology, Agricultural College, Guizhou University, Guiyang, 550025, China Author An, Hua-Ming Department of Plant Pathology, Agricultural College, Guizhou University, Guiyang, 550025, China & Agricultural College, Guizhou University, Guiyang, 550025, China Author Wang, Yong Department of Plant Pathology, Agricultural College, Guizhou University, Guiyang, 550025, China yongwangbis@aliyun.com text MycoKeys 2022 2022-11-10 93 193 213 http://dx.doi.org/10.3897/mycokeys.93.90861 journal article http://dx.doi.org/10.3897/mycokeys.93.90861 1314-4049-93-193 DBF89CE4A6B7518BA94F6B181158D1D7 Phragmidium barnardii Plowr. & G. Winter, Revue Mycologique Toulouse 8 (32): 208 (1886) Fig. 9 Description. Spermogonia , aecia and telia not observed. Uredinia produced on the abaxial leaf surface, hypophyllous, scattered to gregarious, oval to globose, orange, powdery, 0.1-1.0 mm diam, with hyaline and curved paraphyses, 26-39 x 10-13 µm . Urediniospores orange, 16-19 x 15-18 µm (mean: 17.5 x 16.5 µm , n = 30), nearly globose; thick-walled 1.3-2.2 µm , colorless, regularly echinulate with stout spines. Figure 9. Phragmidium barnardii (HGUP21035) on Rubus sp. a-d uredinia on leaves e longitudinal section of uredinium f-h urediniospores. Scale bars: 1 mm ( d ); 50 µm ( e ); 12.5 µm ( f-h ). Habitat. Rubus sp. Known distribution. China, Guizhou Province; South Africa. Material examined. China . Guizhou Province : Duyun city, 27°26'05"N , 107°38'91"W, 870 m , 26 Jun 2021 , on Rubus sp., coll. J.E. Sun , HGUP21035 . Notes: Phragmidium barnardii was first reported on Rubus sp. by Winter (1886) . Its DNA data was established by McTaggart et al (2016) , although without description of morphological characteristics. We confirmed the specimens (HGUP21035) as Ph. barnardii , through phylogenetic analyse with DNA data from McTaggart et al. (2016) .