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Pleosporales - CBS - KNAW

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Fungal Diversity<br />

Fig. 74 Phaeosphaeria oryzae<br />

(from S nr F9572, F9573, lectotype).<br />

a Appearance of ascomata<br />

on the host surface. b<br />

Section of an ascoma. c Squash<br />

mount showing asci in pseudoparaphyses.<br />

Note that asci with<br />

short pedicels. d, e Asci with<br />

short pedicels. F, G. Light<br />

brown 3-septate ascospores.<br />

Scale bars: a=100 μm, b–g=<br />

10 μm<br />

morphological characters of Phaeosphaeriopsis species is<br />

more diverse than those of Paraphaeosphaeria sensu<br />

stricto or Neophaeosphaeria, the ITS sequences are more<br />

similar to each other than those of the other two genera<br />

(Câmara et al. 2003). Currently, Phaeosphaeriopsis comprises<br />

seven species, namely P. agavensis (A.W. Ramaley,<br />

M.E. Palm & M.E. Barr) M.P.S. Câmara, M.E. Palm & A.<br />

W. Ramaley, P. amblyospora A.W. Ramaley, P. glaucopunctata,<br />

P. musae Arzanlou & Crous, P. nolinae (A.W.<br />

Ramaley) M.P.S. Câmara, M.E. Palm & A.W. Ramaley, P.<br />

obtusispora (Speg.) M.P.S. Câmara, M.E. Palm & A.W.<br />

Ramaley and P. phacidiomorpha (Ces.) D.F. Farr & M.E.<br />

Palm (http://www.mycobank.org/, 06/2010).<br />

Phylogenetic study<br />

The generic type of Phaeosphaeriopsis, P. glaucopunctata,<br />

located in Phaeosphaeriaceae based on SSU rDNA<br />

sequences (Câmara et al. 2003). Phaeosphaeriopsis musae<br />

is also shown to belong to Phaeosphaeriaceae in recent<br />

phylogenetic studies (Schoch et al. 2009; Plate 1).<br />

Concluding remarks<br />

None.<br />

Platysporoides (Wehm.) Shoemaker & C.E. Babc., Can. J.<br />

Bot. 70: 1648 (1992). (Pleosporaceae)<br />

≡ Pleospora subgenus Platysporoides Wehmeyer, A<br />

World Monograph of the genus Pleospora and its Segregates,<br />

p. 236. 1961.<br />

Generic description<br />

Habitat terrestrial, saprobic? Ascomata small, scattered,<br />

immersed, semi-immersed to nearly superficial, globose,<br />

subglobose, black, smooth; apex with a protruding<br />

papilla and pore-like ostiole, without periphyses. Perid-

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