Botryosphaeriales » Botryosphaeriaceae » Diplodia

Diplodia mutila

Diplodia mutila (Fr.: Fr.) Fr., Summa Veg. Scand. 2: 417. 1849.

Sphaeria mutila Fr.: Fr., Syst. Mycol. 2: 424. 1823.

Physalospora mutila (Fr.: Fr.) N.E. Stevens, Mycologia28: 333. 1936.

Botryosphaeria stevensii Shoemaker, Can. J. Bot. 42: 1299. 1964.

            Index Fungorum number: IF 201741; Facesoffungi number: FoFxxx, Fig. 1

Description:

Saprobic on stem. Sexual morph: Undetermined. Asexual morphConidiomata 295–300 µm diam., 180–220 µm high, pycnidial, solitary to gregarious, scattered, immersed to semi-immersed, globose, unilocular, dark or pale brown, ostiolate.  Ostiole 45–47 µm diam., 53–55 µm high papillate, circular, central.  Conidiomata wall 25–30 µm thin, composed of thick-walled, brown cells of textura angularis. Conidiophores reduced to conidiogenous cells.  Conidiogenous cells holoblastic, annellidic, indeterminate, discrete, doliiform or ampulliform, hyaline or pale brown, smooth, formed from the inner cells of the pycnidial wall.  Conidia 18–21 µm × 8–10 µm (x̅ = 19.3 × 9.8 µm, n = 10), elliptical or broadly clavate, apex obtuse, base truncate, cylindrical, sphaerical, 0–1-septate, constricted at the septum, dark- brown, smooth-walled.

Material examined: France, on dead stem, 1 January 1882, Roumeguère C (BR5020148393807).