Japanese Fungi on Plants No.51before next top

Puccinia polysora Underwood
 Classification: Basidiomycota, Urediniomycetes, Uredinales, Pucciniaceae

 Distributed maily in west to south Japan. Causes southern rust of corn and also parasitizes related plants such as Tripsacum and Erianthus, producing uredospores and teliospores on the hosts. Spermogonial and aecial stages unknown. Disperses by scattering uredospores and overwinter by teliospores. Never grows on aritificial media.

Characteristics: Plant pathogen

		Morphology:  Spermogonial stage: Unknown  Aecial stage: Unknown  Uredial stage: Uredospores produced in uredinia, ellipsoid to obovoid, sometimes angular, echinulate, golden to pale brown, 29-40 x 20-29 um, germ pores 4-5 aequatorial.  Teleuto stage: Teliospores usually angularly ellipsoid to oblong, varying in shapes, chesnut-brown, 1-2 celled, 29-41 x 18-27 um.
Uredospores

Herbarium specimen in NIAES  None

(Described by Tsukiboshi, T., NIAES, Microbial Systemtics Lab., 2002)

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