AMERICAN UREDINE^;. 327 



Hab. Ad folia viva Chloridis speciei cujusdam in herbosis propre 

 Paraguari, Febr., 1884 (sub. n. 4310 et 4312). 



Obs. Maculae nullse v. totum folium vix pallescens: sori hypopbylli 

 densiuscule gregarii, uredosporici teleutosporicis conmixti. Sori uredo- 

 spori minutissimi (100-150// diam.) sublineares, epidermide lacerata 

 cincti vix prominuli pallide flavescentes : uredospone e globoso-ovatae 

 (18-24 X 12-20//) episporio, crassiusculo hyalino laxe minutissimeque 

 papillato, endoplasmate nubiloso e hyalino flavescente farctae non v. 

 i-guttulse. Sori teleutosporici majores (300-600// diam.) ex orbiculari 

 elliptic!, pulvinulato-prominuli subcompactiusculi, intense atro-fuliginei: 

 teleutosporae pulclire intenseque cinnamomese ellipticae v. vix obovatse 

 (28-24 X 18-20//) medio non v. vix constrictse, episporio subcrassiusculo, 

 praecipue ad apicem ubi saepe parce umbonato, laevissimo, medio i-sep- 

 tatae, parce constrictae, loculis saepius minute i-guttulatis, infero non v. 

 vix minore, pedicello cylindraceo longiusculo (50-100 X 5//) deorsum 

 attenuate, antice chlorinulo, caeterum hyalino suffultae: paraphyses non 

 visae." 

 SYN: 

 1892. Puccinia chloridis Diet. Hedw. 31:290. 

 O, I. Spermogonia and aecidia unknown. 

 II, III. Sori amphigenous and on stems and sheaths, oblong 

 to oblong-linear, soon naked, ruptured epidermis evident. 

 II. Uredosori pale, uredospores obovate or elliptical, small, 

 15-22 by 20-26/Lt, wall colorless or nearly so, comparatively 

 thick, 2.5U, and often twice as thick at the apex, minutely 

 verrucose, pores minute and obscure. III. Teleutosori 

 blackish, teleutospores oblong, oblong-globose or more rarely 

 oblong-obovate, very dark brown, 19-26 by 28-40/u,, slightly or 

 not constricted at the septum, wall thick, 4^, somewhat thicker 

 at the apex, which is rounded or obtusish, base rounded or rarely 

 somewhat narrowed, pedicel tinted, much more colored next 

 the spore, collapsing into ribbon-form and becoming twisted, 

 thick, two to three times the length of the spore, often at- 

 tached obliquely. 



Type material of Spegazzini's species, which was gathered 

 in Brazil, has not been available for comparison with the 

 North American forms. The description, however, so 

 exactly accords with the specimens in hand, even to the ure- 

 dospores, that we have no hesitancy in declaring them to be 

 but one species. The statement in the original description 



