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BIOTA
(living things)
Eukaryota
(eukaryotes)
MYCETEAE
(fungi, moulds and lichens)
BASIDIOMYCOTA
(spore droppers)
UREDINIOMYCETES
(urediniomycete fungi)
UREDINALES
(rust fungi)
Cumminsiella mirabilissima
(a rust fungus)
Record
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BioImages: The Virtual Field-Guide (UK)

Cumminsiella mirabilissima (Peck) Nannf., 1947 (a rust fungus)

Date: 17 April 2007
Location: Berks, England
Voucher: 17/04/2007[A]
(Please quote this in any queries about this record)
State: Telia (III)
Record Summary: heavy infection on leaves of cultivated Oregon Grape
Associated organism: hypophyllous on live leaflet of Mahonia aquifolium
Identification Notes: Infection causes bright orange patches, deepening to red, on the upperside of the leaflet, with blackish necrotic spots above the hypophyllous sori. The leaf underside turns dirty yellow. Finally the leaflet falls.

Punctiform sori scattered over leaf underside and not confined to the discoloured areas.

Urdeospores: abundant, 28-40/19-22µm, clavate to spheropedunculate, with punctate walls.
Telia: with two round cells and long persistent pedicels; mixed with uredospores.
Peridial cells: hyaline, clavate, with thick granular walls.

Images etc

naked eye photograph Infected host - close-up 500 by 333 pixels
naked eye photograph Infected host Mahonia 500 by 333 pixels
magnified photograph Infected leaf - top surface 500 by 431 pixels
magnified photograph Infected leaf - under surface 500 by 444 pixels
magnified photograph Infected leaves - top surfaces 364 by 500 pixels
naked eye photograph Infected leaves 500 by 333 pixels
magnified photograph Telia - magnified 500 by 440 pixels
microscope photograph Peridial cells - magnified 500 by 313 pixels
microscope photograph Peridial cells and uredospores - magnified 500 by 411 pixels
microscope photograph Peridial cells and uredospores - magnified 500 by 471 pixels
microscope photograph Sorus fragment - magnified 500 by 355 pixels
microscope photograph Teliospore and peridial cells - magnified 500 by 346 pixels
microscope photograph Teliospore and uredospores - magnified 500 by 274 pixels
microscope photograph Teliospore, peridial cells and uredospores - magnified 500 by 333 pixels
microscope photograph Teliospores, uredospores and peridial cell - magnified 500 by 333 pixels
microscope photograph Teliospores, uredospores and peridial cells - magnified 500 by 333 pixels
microscope photograph Teliospores, uredospores and peridial cells - magnified 500 by 333 pixels
microscope photograph Uredospores - magnified 500 by 406 pixels

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