Diatrype albopruinosa (Schwein.) Cooke, Grevillea

Vasilyeva, Larissa & Ma, Haixia, 2014, Diatrypaceous fungi in north-eastern China. 1. Cryptosphaeria and Diatrype, Phytotaxa 186 (5), pp. 261-270 : 264-265

Diatrype albopruinosa (Schwein.) Cooke, Grevillea 13: 37. 1884 ( Fig. 7 )

Specimens examined:— CHINA. Heilongjiang Province: vicinity of Sanjiang Nature Reserve, Dongxing village, on Maackia amurensis Rupr. et Maxim. , 5 August 2004, L. Vasilyeva, VLA P-1489; Weihushan Nature Reserve: Northern Tiger Forest Garden, on Padus avium Mill. , 9 August 2004, L. Vasilyeva, VLA P-1488.

Stromata small, wart-like, erumpent from bark with a circular, brownish or almost black ectostromatic disc 0.5–1 mm diam., surrounded by a black line within the substrate; perithecia monostichous or distichous, singly erumpent, 200–250 µm diam., with short and stellate at the top ostiolar necks. Asci cylindrical, paraphysate, 40–60 × 10–15 µm in spore bearing part, stalks of different length, containing 8 biseriate or conglobate ascospores, apical ring indistinguishable. Ascospores one-celled, allantoid, brownish, 12–15(–18) × 3.5–4 µm.

This species has already been reported from several provinces of China, namely Gangsu, Jiangsu, and Shaanxi ( Tai, 1979, Teng 1996, Zhuang 2005). While discussing its pattern of distribution ( Vasilyeva & Stephenson 2010), we noted that the area of this species in North America extends more to the west than for many other species with ‘Asa- Gray disjunction’ (in north-easyern Asia and eastern North America). Perhaps, the same is true for the area of Diatrype albopruinosa in north-eastern Asia: The findings in Heilongjiang and Jiangsu Provinces are close to eastern edge of Asia but the range of distribution extends as far to the west as Gansu Province.

Figures

FIGURES. 6–8. Stromata of Diatrype species: 6. D. acericola. 7. D. albopruinosa. 8. D. macounii. Scale bars: 1 mm.