Fig. 4
From: Fighting wheat rusts in China: a look back and into the future
Urediospores and teliospores of the wheat stripe, leaf, and stem rust fungus. a, b Urediospores (a) and teliospores (b) of Puccinia striiformis f. sp. tritici. c, d Urediospores (c) and teliospores (d) of Puccinia triticina. e, f Urediospores (e) and teliospores (f) of Puccinia graminis f. sp. tritici