Fig. 128. Subclass Teliosporeae, Order Uredinales. Various types of spermogonia. 

 (A) Subcuticular spermogonium in Phragmidiuin violaceum (Schulz.) Wint. (B) 

 Subepidermal spermogonium in Gynuwsporangium clavariaefonne (Jacq. ex Pers.) 

 DC. (C, D) Subcortical spermogonia. (C) In Cronartium comptoniae Arthur, section 

 of twig of Pinus sp. (D) Portion of spermogonium of Cronartium ribicola Fischer, 

 showing development of sperm cells. (A-B, courtesy, Blackman: Ann. Botany, 

 18(71) :323-373. C, after Adams: Penn. State Coll. Agr. Exp. Sta. Bull., 160:31-77. 

 D, courtesy, Colley: J. Agr. Research, 15(12) :619-660.) 



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