GRASSES OF IOWA. 253 



other bunts, it produces a disagreeable odor. The spores are 

 spherical or veryrarely elliptical, usually 20" in diameter. 



TUletia hordei (Koernicke). — Bunt of barley was described by 

 Kcernicke* in 1877 from specimens found in Persia on Eordeum 

 fragile as well as on H. rnurinxm. This smut occurs in the ova- 

 ries ad is covered by a blackish-brown membrane. The 

 spores are smaller than those of T. secalis, measuring 19.5-20.5" 

 in diameter, t The epispore is but slightly thickened, and 

 reticulated. 



TUletia Lolii, Auarsaw. — This bunt occurs in the fruit of 

 Lolium teinulentuml and other species. Spores are spherical or 

 irregularly spherical or rarely elliptical; pile yellow or yel- 

 lowish-brown, 17.57-20 by 24" in length, usually 19. Epispore 

 with prominent projections which form a net work, the meshes 

 of vvhich, according to Winter are 3.5" in width. The allied T. 

 controversa, Kuehn, attacks the ovaries of Agrojyi/ron repens: 

 the globose spores are pale browc. The mycelium is perennial 

 in the rhizome of its host. 



TUletia rotundata (Arth) E11.& Ev. — In S luth Carolina a TUle- 

 tia has been found quite abundantly on rice It affects the 

 ovaries, converting them into a black granular mass Accord- 

 ing to Anderson§ who has studied the disease, the ovari s are 

 seldom hypertrophied or atrophied, but retain to a great extent 

 the form and size of the normal ovaries. The large, spherical, 

 spiny spores are surrounded by a hyaline envelope. They are 

 from 26-30" in diameter. According to Tracy and Earle this 

 fungus occurs on various wild grasses like Panicum virgatum 

 af^dLeersia. This is synonymous with T. corona, Scribner. || 

 Massee evidently overlooked the American studies of the 

 species. A second species, the 7'. oryzae, Pat.,* occurs on rice 

 in Japan. The globuse or ovoid spores are olive-brown and 

 warted; united into hard blackish-green mass. This belongs to 

 Bref eld's Ustilaginoidse. 



TUletia Molinice (Thum) Winter. — This species was first 

 described by Von Thumen** as Vossia Molinice. Koernicke ft 

 changed it to Neovosia Molinice (Von Thum) Kornicke, but Sac- 



*Mycologische Beitrage. Hedwigia. 16: 30. 



+Saccardo. Syll. Fang. 7: 48t. Frank. Krankhsiten der Pflanz'en. 427 J Ed. ' 

 *SaccardoSyU. Fung. 7: 483. Winter. Die Pilzj 1: 109. 

 §Bot. Gazette. 27: 467. 1899. 

 IIBull. Torr. Bot. Club 23: 310. 

 TBuU. Soc. Myc. 3: 124. 1887. 

 Saccardo Syll. Fung. 9: 286 

 **0est. Bot. Zeltscher29: 18, 

 ttSyll Fung. 7 



