Part 3, 1912] AEJCIDIACBAB 225 



by 19-26 m; wall cinnamon-brown, rather thin, 1-1,5 ju thick, uniform, smooth; pedicel 

 hyaline, slender, about length of spore or less. 

 On Poaceae : 



Panicum barhinode Trin. (P. molle Auct. not Swartz) , Florida ; Cuba : Morelos ; Guatemala. 

 Type locality : Dehra Dun, India, on Panicum javahlcum. 

 Distribution : Southern Florida and central Mexico southward : also in India. 

 ExsicCATi : Barth. Fungi Columb. 2671. 



6. Nigredo major Arthur. 



Uromyces major Arth. Bull. Torrey Club 38 : 377. 1911. 

 O and I. Pycnia andaecia unknown. 



II. Uredinia amphigenous, scattered, oval or oblong, 0.1-0.2 mm. wide by 0.3-1 mm. 

 long, soon naked, cinnamon-brown, somewhatpulverulent, ruptured epidermis noticeable ; 

 urediniospores" broadly ellipsoid, 19-23 by 21-»6m; wall light golden -yellow, moderately 

 thick, 2-2.5 M, strongly and evenly echinulate, the pores 4, equatorial. 



III. Telia amphigenous, scattered, oval or oblong, about 0,1 mm. wide by 0.3-1 mm. 

 long, early naked, pulvinate, blackish-brown, ruptured epidermis not noticeable ; teliospores 

 broadly ellipsoid or globoid, 19-23 by 23-27 m, usually rounded both above and below; wall 

 smooth, chestnut-brown, concoloroUs, moderately thick, 2-2.5 m, the apex considerably thick- 

 ened, 5-9 m; pedicel firm, 5-7// in diameter, very slightly tinted, once to twice length of 

 spore. 



On Poaceae : 



Muhlenbergia sp., Mexico (state). 

 Type locality : Near City of Mexico, Mexico, on Muhlenbergia sp. 

 Distribution : Known only from the type locality. 



7. Nigredo seditiosa (Kern) Arthur. 



Aecidium Plantaginis Burrill, Bull. 111. I,ab. Nat. Hist. 2: 232. 1885. Not^. Plantaginis Ces. 

 1858. 



Uromyces Aristidae Auct. Not U. Aristidae Ellis & Ev. 1887. 

 Uromyces seditiosus Kern, Torreya 11 : 212. 1911. 



0. Pycnia amphigenous, few, on discolored spots 0.5^ mm. across, inconspicuous, 

 honey-yellow becoming brownish, subglobose, laterally compressed, 80-100 a in diameter 

 by 100-112 /i high ; ostiolar filaments 45-65 ju long. 



1. Aecia amphigenous, gregarious, in crowded or sometimes annular groups on discol- 

 ored spots 0.5-4 mm. across, cupulate or short-cylindrical, 0.2-0.3 mm. in diameter ; peridiimi 

 colorless, the margin erose, erect or somewhat recurved ; peridial cells rhombic in longitu- 

 dinal section, 17-19 by 28-35 m, the outer wall very thick, 10-13 m, transversely striate, 

 smooth, the inner wall thinner, 4-5 ju, somewhat striate, moderately verrucose ; aeciospores 

 subglobose or broadly ellipsoid, 14-18 by 16-22 /i ; wall colorless, rather thin, 1.5 m, finely 

 verrucose. 



On Plantaginaceae : 



Plantago aristata Michx., Missouri, Nebraska, Texas. 



Plantago eriopoda Torr., Montana, Wyoming. 



Plantago Purshii R. & S., Nebraska, Texas. 



Plantago Rugehi Decaisne, Missouri. 



Plantago Tweedyi A. Gray, Montana, Wyoming. 



Plantago virginica L., Alabama, Illinois, Mississippi, Missouri, South Carolina, Texas. 



II. Uredinia epiphyllous, scattered, linear or oblong, cinnamon-brown, few seen ; 

 urediniospores globoid, 19-26 /i in diameter; wall cinnamon-brown, moderately thick, 

 2-2.5 /i, very minutely verrucose, appearing almost smooth when wet, the pores rather indis- 

 tinct, 4, equatorial. 



III. Telia epiphyllous, scattered or sometimes crowded and irregularly confluent, 

 oblong or linear, 0.2-0.4 mm. wide by 0.5-1 mm. or more long, early naked, conspicuous, 



h 



compact, pulvinate, dark chocolate-brown, ruptured epidermis not noticeable ; teliospores 

 broadly ellipsoid, or obovoid to nearly globoid, 15-21 by 23-39/:*, rounded or obtuse at both 

 ends ; wall chestnut-brown usually with a slightly paler umbo, about 1.5-2^ thick, much 

 thicker at the apex, 5-10 /x, smooth; pedicel slightly colored, rather stout, once to twice 

 length of spore. 



