2,2 Charles E. Bcssey 



Order Uredinales. Typically producing" live kinds of spores, 

 viz., (I) thin-walled sporidia, {2) smooth-walled pycniospores, 

 (3) aeciospores, (4) urediniospores, (5) teliospores. 



Family no. Aecidiaceae. Telioasci free or fascicled, usually 

 erumpent ; sporidia, pycniospores, aeciospores, urediniospores, and 

 teliospores typically present; walls of spores usually firm. Uro- 

 pyxis, Phragmidium, Aecidiiun, Nigrcdo, Uroniyces, Dicaeoma 

 {''Puccinia'). (Pf. I, i**, 48.) 



Family in. Uredinaceae. Telioasci compacted into a crust 

 or column, subcuticular or erumpent, walls of spores firm. Uredo 

 C'Melampsora"), Cronartiitm. (Pf. I, i**, 38.) 



Family 112. Colesporiaceae. Telioasci compacted laterally 

 into waxy layers ; walls of spores weakly gelatinous. Coleospo- 

 rium. (Pf. I, !*''=, 42.) 



Order Ustilaginales. Typically producing two kinds of 

 spores, viz., (i) thin- walled sporidia, (2) teliospores, which are 

 here regarded as homologous with the teliospores of the preced- 

 ing order. 



Family 113. Ustilaginaceae. Germinating teliospore produ- 

 cing a septated promycelium. Usfilago, Sphacclotheca. (Pf. I, 

 I*^ 6.) 



Family 114. Tilletiaceae. Germinating teliospore producing a 

 tubular promycelium. Tilletia, Entyloma. (Pf. I, i**, 15.) 



Class 17. BASIDIOSPOREAE. True fungi, mostly sapro- 

 phytes, consisting of septated mycelium which bears the spore- 

 fruits; spores ("basidiospores") borne externally upon special 

 cells ("basidia"), which are usually massed in a hymenium. The 

 basidia are here regarded as the homologues of the asci of the 

 Ascosporcae. 



Order Hymenogastrales. Spore-fruit fleshy, closed, subter- 

 ranean wholly, or at first internally filled with irregular cavities 

 which are lined with a hymenium ; no capillitium. 



Family 115. Hymenogastraceae. With the characters of the 

 order. Secotmm, Hystcrangiiim, Hymenogaster, Octaviana. 

 (Pf. I, I**, 296.) 



Order Phallales. Spore-fruit fleshy, when young closed, sub- 

 terranean at first, internally containing a circular spore-bearing' 



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