214 



to settle that point the writer wishes now to call attention to a 

 Uromyces which is undoubtedly distinct from either U. acumi- 

 natus or U. Spartinae. Its distinctive characters are the brown- 

 ish or purplish spots which are produced about the sori and the 

 few equatorial pores of the urediniospores. Neither U. acumi- 

 natus nor U. Spartinae produces such spots and both have numer- 

 ous scattered pores. The new form comes from southern Florida 

 and may be characterized thus: 



Uromyces argutus sp. nov. — O and I. Pycnia and aecia un- 

 known. 



II. Uredinia amphigenous, scattered, on rather large brownish 

 or purplish spots, linear, 1-4 mm. long, rather tardily naked, 

 slightly pulverulent, cinnamon-brown; urediniospores broadly 

 ellipsoid, 19-23 X 25-32^1, the wall rather thick, 2-3^1, light cin- 

 namon-brown, finely echinulate; pores 3, occasionally 4, ap- 

 proximately equatorial. 



III. Telia amphigenous, scattered, sometimes on discolored 

 spots like the uredinia, linear, 1-2 mm. long, rather tardily 

 naked, pulvinate, blackish; teliospores ellipsoid or obovoid, 16- 

 19 X 24— 32;u, usually narrowed both above and below, the wall 

 dark chestnut-brown, 1.5-2^ thick, much thickened at apex, 7- 

 lOyu, smooth; pedicel tinted, about twice length of spore. 



Type collected at Miami, Florida, on Spartina glabra Muhl., 

 March 25, 1903, E. W. D. Holway. 

 Purdue University, 

 Lafayette, Indiana 



REVIEWS 



Duggar's Plant Physiologj* 



Professor Duggar's "Plant Physiology" occupies a zone of 

 tension between pure and applied science, and it is not easy to 

 do the book entire justice in a review, owing in part to the fact 

 that it is quite unlike anything else we have, and the reviewer has 

 continually to adjust his orientation. It seems to the writer 

 that the book would be less liable to misinterpretation if the 

 title by which it was announced in advance, "The Physiology 

 of Plant Production," had been retained on the title-page. As 



* Duggar, Benjamin M. Plant Physiology, With special reference to plant 

 production. Pp. i-xv-(-i-5i6, frontispiece and figs. 1-144. New York. The 

 Macmillan Co. 191 1. Price I1.60. 



