418 



UREDINEAE. 



Caeoma. 



Caeoma abietis-pectinatae Reess. 1 The aecidiospores may 



be found on the lower surface of young 

 needles of silver fir ; the aecidia are yellow 

 elongated cushions situated on either side 

 of the needle mid-rib, and are without 

 peridia. Pycuidia (spermogonia) are pro- 

 duced before the aecidia. The mycelium is 

 septate and intercellular with few haustoria. 

 I have found the fungus fairly abundant 

 on the Alps and in the Danube valley near 

 Passau. Teleutospores are unknown. 



Caeoma deformans (Berk, et Br.) Tubeuf 



( Uromyccs deformans Berk, et Br. 2 or Caeoma Asanuro Shirai). 3 

 This induces the formation of " witches' brooms " or of antler-like 



FIG. 253. Cii'Oina abietis 

 /,-/;, tutuc. Needle of Silver 

 Fir showing Caeo/na-patches 

 on the lower surface, (v. 

 Tubeuf del.) 



FIG. 254. Caeoma dejormans mi Thuiopitis dolabrata. (v. Tubeuf phot, from dried 

 material presented by Prof. Grasniumi of Tokio.) 



1 Reess, Rostpihformen, 1869. 



-Berkeley, "The fungi collected during the expedition of H.M.S. 'Chal- 

 lenger.'" Jour, of Linnean Soc., xvi., 1876. 



; Sliirai, Botanical Maga~ine, Tokio, 1S89. 



