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Sexual morph of Colletotrichum acutatum. Isolate Ca44-1 produced on PDA by pairing with itself: (a,b) perithecia arranged in concentric circles (a) above; (b) reverse; (c) perithecium; (d) asci with ascospores; (e) immature ascospores during division; (f) free mature ascospores; scale bar = 10 µm.
