Tranzschelia discolor . a. On Anemone coronaria: aeciospore surface with fine warts and small deciduous plugs in SEM; b–d. On Prunus domestica: (b1–b3) young telia consisting of distinct spore balls; c. Balls of young teliospores in SEM; d. Two teliospores in SEM; their lower cells are narrower and longer, and ornamentation is less distinct; (a, c, d by Paul Blanz; b by Irmgard Krisai-Greilhuber).