Bionectria ochroleuca (Schwein.) Schroers & Samuels 1997

Creonectria ochroleuca (Schw.) Seaver, Mycolcgia 1 : 190. 1909
Sphaeria ochroleuca Schw. Trans. Am. Phil. Soc. II, 4 : 204. 1832.
Nectria saccharina Berk. & Curt.; Berk. Jour. I^inn. Soc. 10: 378. 1868.
Nectria ochroleuca Berk. Grevillea4: 16. 1875.
Nectria aureofulva Cooke & Kllis, Grevillea 7 : 8. 1878.
Nectria depauperata Cooke, Grevillea 7 : 50. 1878.
Nectria vulgaris Speg. Anal. Soc. Ci. Argent. 12 : 210. 1881. Verticillium iubercularioide Speg. Anal. Soc. Ci. Argent. 13: 26. 1882.
Nectria conigena Ellis & Ev. Bull. Torrey Club 10 : 77. 1883.
INeciria rhizogena Cooke, Grevillea 11 : 108. 1883.
Dialoneciria filicina Cooke & Hark.; Cooke, Grevillea 12 : 101. 1884.
Nectrta filicina Sacc. Syll. Fung. 9: 963. 1891.
Neciria pallida Ellis & Ev. Proc. Acad. Phila. 1894: 325. 1894.
Stromata small, tubercular, 1-2 mm. in diameter, whitish to pink or flesh-colored, often floccose because of the erect, verticillate conidiophores ; branches of the conidiophores ascending perpendicularly and each bearing at its summit a single conidium; conidia ellipsoid, hyaline, 5-8 X 3/^, often granular within; perithecia occurring in dense clusters ranging from 3-5 to many perithecia, the clusters very variable in form; individual perithecia small, nearly globose, with a prominent papilliform ostiolum, smooth or only minutely rough, at first flesh-colored, when dry becoming pale-yellow or almost white, 200-300// in diameter, entire or occasionally collapsing, becoming pezizoid ; asci clavate, 50X 5-7//, 8spored ; spores 2-seriate above, 1-seriate below or often irregularly crowded, fusoid with ends acute, a little constricted at the septum, hyaline, 8-12 X 3-4//.
On bark of various kinds of trees ; also on Yucca, old stump of Musa, and tree fern.
Type locality : Bethlehem, Pennsylvania.
Distribution : New York to California, I^ouisiana, and the West Indies.

Bionectria ochroleuca is a plant pathogen that causes seed rot in oil seed rape.