70 Bulletin 313 



Phyllosticta tenerrima E. & E. — On the leaves of Saponaria 



officinalis. Causes whitish to hght brown spots with dark borders. 



Pycnidia 60-100 ix in diameter, ostiolate, spores hyahne, 4-6 x 



2-2.5 IX. 



Z7A. Infected leaf of Saponaria officinalis. 375. Pycnidivim, 2/Z. 376. 

 Spores, 1/12. 



Phyllosticta wioi^m Desm. — On the leaves of pansies and vio- 

 lets. Causes white, circular spots. Pycnidia numerous, very small, 

 brown ; conidia very small, hyaline, subcylindric to oval, and about 

 10 II long. 



Z77. Portion of infected leaf of pansy. 378. Pycnidia, 2/3. 379. Spores 

 1/12. 



Phoma batat.^ E. & H. (=Diaporthe batatatis Harter & Field, 

 page 60). 



PiiOMA BET.a:* (Oud.) Fr. — On the leaves and roots of the beet. 

 Causes blackening and dying of the leaves, beginning with the 

 younger beet leaves, and a "damping off" of the seedlings. P}'cnidia 

 over dead parts, small, more or less spherical, 125-635 /x in diame- 

 ter ; spores 3.8-9.4 x 2.6-4.3 fi. 



380. Pycnidium, 2/3. 381. Spores, 1/12. 



PnoMA COLUTE^ S. & R. — On the leaves of Colutea aborescens. 

 Causes irregular confluent, gray spots with narrow dark brown 

 borders. Pycnidia grouped, lenticular, brown, ostiolate; spores 

 ovate-oblong to ovate, hyaline, 6-8 x 2.5-3.2 /x. 



382. Infected leaf of Colutea arborescens. 383. Pycnidium, 2/3. 384. 

 Spores, 1/12, from two sources. 



Phoma japonica Sacc. — On the twigs of Kerria japonica. 



Causes irregular-shaped cankers. Pycnidia covered, minute, black, 



globose-depressed or oblong; spores fusoid, guttulate, hyaline, 6.6-10 



X 3.3-4 [X. 



385. Infected twig of Kerria japonica. 386. Mycelium, 1/12. 387. Spores 

 from twig, 1/12. 388. Spores from culture, 1/12. 



Phoma MALI Schulz & Sacc. — On the fruit of the pear and apple. 

 Causes a canker or dry rot. Pycnidia grouped or subcutaneous 

 depressed, ostiole scarcely breaking forth; conidiophores filiform; 

 spores oblong-ovate to oblong fusoid, 5-8 x 2-3 fx. 



389. Infected pear. 390. Spores, 1/12. 



*Svn. Phvllosticta hetce. 



