Phragmidium barnardii Plowr. & G. Winter, Revue Mycologique Toulouse 8 (32): 208 (1886)

Sun, Jing-E, Zhang, Qian, Luo, Wen-Mei, Yang, Yuan-Qiao, An, Hua-Ming & Wang, Yong, 2022, Four new Phragmidium (Phragmidiaceae, Pucciniomycetes) species from Rosaceae plants in Guizhou Province of China, MycoKeys 93, pp. 193-213 : 193

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 × 10-13 µm. Urediniospores orange, 16-19 × 15-18 µm (mean: 17.5 × 16.5 µm, n = 30), nearly globose; thick-walled 1.3-2.2 µm, colorless, regularly echinulate with stout spines.

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).

Figures

Figure 9. Phragmidium barnardii (HGUP 21035) 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).