Pleonectria pyrrhochlora (Auersw.) G. Winter 1884

Thyronectria pyrrhochlora (Auersw.) Sacc
Michelia 1 : 325. 1878.
Neciria pyrrhochlora Auersw.; Rab. Fun^ Kur. 1234. 1869.— Hedwigia 8 : 88. 1869. Valsa Xanthoxyli Peck, Ann. Rep. N. Y. State Mus. 3ft : 49. 1879. Pseudovalsa Xanthoxyli Sacc. Syll. Fung. 2 : 137. 1883.
Fenestella Xanthoxyli Sacc. Syll. Fung. 2 : 332. 1883. Pleonectria pyrrhochlora Wint. in Rab. Krypt. Fl. V: 108. 1884. Thyronectria virens Hark.; Kllis & Kv. N. Am. Pyrenom. 92. 1892. Thryonectria Xanthoxyli ElHs & Ev. N. Am. Pyrenom. 92. 1892. ? Thyronectria sambucina KlHs & Ev. Bull. Torrey Club 24 : 458. 1897.
Perithecia cespitose in rounded or elongate clusters, seated on the inner bark, finally bursting through the epidermis, becoming more or less superficial, often so densely cespitose that the perithecia appear to be united, at first covered with a thin olive-green tomentum or powdery material, with the ostiolum protruding and bare, the entire perithecium becoming more or less bare with age, about 300 ^ in diameter ; asci clavate, 100125/^ long; spores crowded, ellipsoid, straight or curved, hyaline or slightly yellowish, many-septate and muriform, 18-24 X 8-12 fi.
On branches of Acer, Fraxinus, and Xanthoxylum,
Type locality : Burope.
Distribution : New York to Ontario and Ohio ; Colorado (?) ; also in Europe.

Nectria pyrrhochlora je grzib, co go ôpisoł Auersw. 1869. Nectria pyrrhochlora nŏleży do zorty Nectria i familije Nectriaceae. Żŏdne podgatōnki niy sōm wymianowane we Catalogue of Life.