86 Bulletin 313 



DiPLODiA piNEA* (Desm.) Kickx. — On the stems and needles of 

 pine. Causes cankers on the stems and a dying of the needles. 

 Pycnidia globose, papillate, erumpent, the papilla falling away at 

 maturity. Spores oblong, dark brown, thick-walled, 1 -septate when 

 mature, occasionally 2- or 3-septate, 35-40 x 16-18 fi. 



502. Cross-section of pine needle showing p3'cnidia, 2/3. 503. Cross-section 

 of pycnidium in bark, 2/3. 504. Conidiophores and spores in various stages 

 of development, 1/12. 505. Immature spores, 1/12. 506. Mature spores with 

 1, 2 and 3 septa, 1/12. 507- Cankers on stem showing spores. 



DiPLODiA SAPINEA (Fr.) Fckl. — On the branches of Piiius sylves- 

 tris. Pycnidia prominent, grouped, erumpent, globose, smooth, dark, 

 ostiolum in the form of a papilla; spores, ellipsoid-oblong, some- 

 what unequally one-sided, dark, 24-26 x 12 /a. 



508. Mature and immature spores, 1/12. 



Stagonospora carpathica Baeuml. — On leaves of white clover 

 (T. repens) and alfalfa. Causes small, circular or irregular spots 

 which become dry and white or ashy-brown with dark, narrow mar- 

 gins. Pycnidia on both surfaces of leaf, sparse, globular, ostiolate, 

 pale brown, 120-180 /x in diameter. Spores cylindrical straight, or 

 occasionally slightly curved, flexuous, 1-celled, or 1-3 septate, some- 

 times constricted, 18 x 3.5 /x; on clover, 6-15 x 2.5-3.5 /*. 



509. Infected leaf of Trifolinm repens. 510. Pjxnidia, 2/3. 511. Spores, 

 1/12. 512. Pycnidia from alfalfa, 2/3. 513. Spores, 1/12. 



^Syn. Sphceria pinea. 



