Fig. 4
From: Southern corn rust caused by Puccinia polysora Underw: a review
Southern corn rust symptoms. a Urediniums on adult maize plants. b Urediniums on the sheath. c Urediniums on the sheaths, bracts and stem. d A urediniospore under a scanning electron microscope (SEM). e Urediniums on a maize leaf. f A uredinium under a SEM