Arthur: New specjes of Uredineae 519 



conspicuous; urediniospores broadly ellipsoid, 21-29 by 29-42 /*, 

 wall chestnut-brown, 1.5-2 fx thick, sparsely and strongly echinu- 

 late with sharp conical points about 3 ft apart ; pores 3, equatorial. 



On Chaetochloa vmcros perma Scribn. & Mer., Miami, Florida, 

 March 25, 1903, E. IV. D. Hohvay (type) ; May 15, 1906, Ernst 

 A. Bessey 41. The sori of both collections are black, due to a 

 fungous parasite. No teliospores could be found. The uredinia 

 resemble those of Puccinia atra D. & H., but the spores are 

 larger with echinulate instead of verrucose surface. 



Caeoma strobilina sp. nov. 



0. Pycnia conicolous, preceding and among the aecia, arising 

 beneath the cortical layers, flattened, in more or less continuous 

 layers, 130-160^ high. 



1. Aecia conicolous, subcorticular, usually covering the entire 

 surface, causing hypertrophy, the scales becoming solidly united 

 and turning prematurely reddish-brown ; peridium wanting ; aeci- 

 ospores narrowly ellipsoid or broadly lanceolate, rarely globoid or 

 obovoid, often attenuate below, 12-19 by 29-50//, wall colorless, 

 about 1.5 fi thick, rather coarsely verrucose, with a smooth spot 



at base. 



On cones of Pinus palustrisWW., East Palatka, Florida, May 30, 

 1906, P. H. Rolfs (type) ; Pinus Taeda L., Dunedin, Florida, June 

 20, 1 90 1, 5. M. Tracy 7324; Lake City, Florida, May 30 and July 

 10, 1906, P. H. Rolfs. This species, which appears not to be abun- 

 dant, has probably been overlooked from its habit of growth on the 

 cones of high trees, where it is generally inaccessible. The speci- 

 mens, on which this description is based, were sent by Professor 

 Rolfs in fresh condition. To him and to Mr. H. S. Fawcett, who 

 ascended the trees for the type material, thanks are due for their 

 enthusiastic search for specimens. Professor Rolfs reports seeing 

 diseased cones, presumably of this species, in South Carolina be- 

 tween Charleston and Florence, as he journeyed on the Atlantic 

 Coast Line Railway. When the cones are dead and dry, they usu- 

 ally fall to the ground, but then are so wormeaten and abnormal 

 in appearance as to give little suggestion of bearing a rust. Such 

 was the specimen sent by Professor Tracy, which was found on 

 the ground. The fungus usually penetrates the whole cone, 

 causing it to become much enlarged and of a brick- red color, 



