180 Bulletin 313 



"Teleutosori dark-brown, rovmd to oblong or elliptical, often 

 thickly covering the entire plant, pulvinate, firm; teleutospores 

 chestnut-brown, smooth, elliptical to oblong, apex rounded, up to 8 /x 

 thick, lower cell mostly rounded, rarely narrowed to the pedicel, 

 slightly constricted, 32-48 x 18-24 fi ; pedicel persistent, tinted, vary- 

 ing in the same sorus from short up to 80 yu, long.'' Holway, C. W. 

 D. — North American Uredinese, v. 1, p. 27 (1905). 



982. Infected stem of asparagus. 983. Aeciospores, 1/12. 984. Uredospore, 

 1/12. 985. Teleutospores 1/12. 



PucciNiA CANALicuLATA (Schw.) Lagerh.- — On Cyperus sp. 



"O. Pycnia amphigenous in small, confluent groups, honey-yel- 

 low becoming brownish, subepidermal, globoid, small. 



"I. Aecia h^-pophyllous, in circular or elongated groups, 0.3-0.8 

 mm. across, on discolored, unthickened spots, low cupulate, small, 

 0.2-0.3 mm. in diameter ; peridium colorless, the margin finely 

 eroded and slightly recurved; peridial cells oblong, 16-23 x 23-29 fi, 

 slightly overlapping, the outer wall smooth, 5-8 /x thick, transversely 

 striate, inner wall moderately verrucose, thinner, 2-4 /i; aeciospores 

 angularly globoid or broadly ellipsoid, 13-16 x 15-19 fx,, the wall thin, 

 1 /x or less, colorless, finely and inconspicuously verrucose. 



"II. Uredinia hypophyllous, scattered, oblong, 0.5-2 mm. long, 

 dehiscent by a longitudinal slit, cinnamon-brown, pulverulent, 

 ruptured epidermis evident ; urediniospores ellipsoid to obovoid, 

 15-21 X 23-30 fj.; wall moderately thin, 1.5-2 fi, cinnamon-brown, 

 finely and closely echinulate, pores 2, rarely 3, equatorial. 



"III. Telia h^-pophyllous, oblong or linear, 0.5-2 mm. long, cho- 

 colate-brown, covered by the epidermis, tardily dehiscent by a longi- 

 tudinal slit; teliospores oblong or cylindrical, 15-22 x 42-44 fi, trun- 

 cate, obtuse or rounded above, narrowed or rounded below, slightly 

 or not constricted at the septum ; wall moderately thin, 1-2 /x, smooth 

 considerably thickened at the apex, 6-10 /x chestnut-brown above, 

 paler below; pedicel tinted, one-half the spore lenght or less." Dr. 

 J. C. Arthur's manuscript. 



On Cyperus esculentus. 986. Uredospores, 1/12. 987. Teleutospores, 1/12. 



PucciNiA ciiRYSANTHEMi Roze. — On the foliage of greenhouse 

 chrysanthemums. 



"II. Uredosori on both surfaces of leaf, but mostly hypophyllous, 

 sparingly on stem, generally round, soon naked, powdery, scattered 



