PLANTS OF IOWA 33 



Leptosph^eria, Ces. & De Not. 



339. L. doliolum, (Pers.) 



On dead herbaceous stems. 



340. L. culmicola, (Fr.) 



On culms of Phragmites. 

 Pleomassaria, Speg. 



341. P. siparia, (B. & Br.) 

 On birch. 



CLYPEOSPH^RIC^ FAMILY. 



Thyeidium, Sacc. 



342. T. lividum, (Pers.) 



On decorticated wood, on Red cedar. 



VALSE.E FAMILY. 



Diaporthe, Nitschke. 



343. D. stictostoma, (Ell.) 



On dead limbs of Amelanchier canadensis. 



344. D. decedens, (Fr.) 



On dead limbs of Corylus. 



345. D. taleola, (Fr.) 

 On dead oak limbs. 



346. D. tessella, (Pers.) 

 On dead willow limbs. 



347. D. tessera, (Fr.) 



On dead limbs of Corylus. 



348. D. eourensis, Sacc. 



On some large herbaceous stem. 



349. D. asclepiadis, E. & E. 



On dead stems oiAsclepias tuberosa. 



350. D. coricola, Ellis & Holway. 



On dead limbs of Cornus paniculata. 

 Valsa, Fr. 



351. V. cerratopliora, Tul. 



On Quercus, Amelanchier, and Crataegus. 



352. V. americana, B. and C. 



On various shrubs and trees. 



