^ g2 NATURAL HISTORY BULLETIN. 



EXSIC. 

 Ellis and Everhart, N. A. F. 3141, 3583. 



29. PUCCINIA GRAMINELLA {SpCg.) Diet. & HollV. (1895. 



Erythea 3:80.) 



29^. On Stipa eminens Cav. Berkeley, Calif., Blasdale and Holtuay. 

 Orig. Desc. " Maculae nulla;; pseudosporangia amphigena lineatim, inter- 

 rupte laxeque disposita, primo subglobosa, clausa dein elongato-cylin- 

 dracea [o.%-or t '" long X O.15-0.25"'' crass.) apice irregulariter ac frustu- 

 latim lacero-dehiscentia.albo-flavescentia, tenui menibranacea. contextu 

 parenchymatico, e cellulis subhexagonis elongatis (30-40X15-20), hya- 

 lino-tiavidis, levibus composito; sporse sphsericae (20-24), episporio cras- 

 sissimo, dense ruguloso-striolato, protoplasmate amoene aurantiaco, 

 grosse guttulato. 



Hab. ad folia viva Stippe speciei cujusdam vulgatissimum prope 

 Bonariam, vere, 1S80."— Spegazzini, Fur.gi Arg. 4:32. 



Second Desc. " Spots yellow or purplish. yEcidia and teleutospores 

 epiphyllous. yEcidia arranged to oblong groups or lineally extending 

 along the veins of the leaves. Pseudoperidia persistent, irregularly 

 bursting, composed of oblong cells. ^Ecidiospores elliptical or ovoid, 

 21-29X1^-21 u, epispore thick, colorless, verrucose or striolate. Teleut- 

 ospores; sori elongated, pulvinate, dark brown; spores hardly con- 

 stricted at the septum, thickened above, smooth, brown, 35-48x22-28^. 

 Pedicels stout, longer than the spores. 



On Stipa eminens, at Berkeley, Alameda Co., Calif., May, 1894, leg. 

 Hoi way and Blasdale." 



svn: 



sEcidium graminellum Speg. (1881. Fungi Argentinipug. 

 IV, p. 32.) 



This rust is unique among grass and sedge forms in bear- 

 ing the aecidial stage upon the same host as that bearing the 

 third stage. In spite of both stages being upon the same host 

 the secidium was known and described some time before the 

 other was found, which fact accords with the usual history of 

 grass rusts. It seems that the teleutosporic form must be 

 very rare or even wanting in South America, as it has not 

 been found by Spegazzini (1. c.) in Argentine, or in Chili by 

 Neger (Engler's Bot. Jahrb. 22:351). The species does not 

 appear to produce uredospores. 



The ascidiospores are evenly and closely papillate, and as 

 usual are more or less angular from compression. They are 



