l8 9 x -] Notes on Uredinece. 225 



does also the large parenchyma cells between the mestome and the stereome of 

 the superior face. The leptome is enclosed by layers of very narrow cells and 

 separated from the hadrome. X 240. Fig. 10. Epidermis of the inferior face. 

 X 500. Figs. 11 and 12. Thorn-shaped expansions from the superior epider- 

 mis, seen from the side and from above. X 240. 



Figs. 13 and 14. U. Palmcri. — Fig. 13. Transverse section of leaf. X 74. 

 Fig. 14. Stomate from the inferior face, transverse section. X 320. 



Notes on Uredineae. 



J. C. ARTHUR. 



Puccinia Stipcz is variously cited by different writers. 

 Dietel 1 writes/*. Stipce Opiz, and considers the American form, 

 heretofore called P. Stipce Arthur, identical with it. In 

 Sydow's Uredineen, fascicle I, No. 28, it is given as P. 

 Stipa> (Opiz) Hora, and is so spoken of by Magnus 2 in a 

 notice of the publication. 



Opiz 3 made use of the name in a list of Bohemian plants, 

 in which no characterizations or notes of any kind are given. 

 It was not used as a specific name, but for a sub-form of a 

 variety of P. Graminis. The full name reads Puccinia 

 Gratninis Pers., c foliorum Opiz, {5 Stipa Opiz.. The 

 host is not mentioned, but it was presumably a Stipa, and 

 quite possibly S. capillata, on which the rust was gathered in 

 1888 by Paul Hora in the region covered by Opiz's list. 

 Whether a description of the species has been published by 

 Hora or not the writer does not know, but if so it probably 

 did not antedate the publication in America. 4 The name 

 correctly written would therefore be Puccinia St i pee (Opiz) 

 Arthur. 



Puccinia ornata was first published as the name of a Lepto- 

 puccinia on Rumex 5 in 1887, and consequently the later 

 application of the specific name to another Puccinia by Hark- 

 ness 6 calls for correction. It would be a pleasure to dedi- 

 cate this interesting form to the di scoverer, if another 



1 Hedwigia, xxviii, (1889, p. 187). 



* Hedwigia, xxviii, (1889, p. 94). 



3 Seznam Rostlin Kvetenv Ceske, 1852, p. 138. . 



x 4 Arthur, Preliminary List of Iowa Uredinese. in Bull. Iowa Agric. Coll., 

 Nov. 1884 p 100 



, B Report of botanical work in Minnesota, in Bull So. 3, Geol. Surv. Minn.. 

 1 887, p. 30. 



"Proc. Cal. Acad. Sci., 2nd. Ser., ii. 18-.'. 



