Puccinia horiana Henn., (white rust of chrysanthemums, chrysanthemum white rust)


21 Nov 2010 at OSGR: SU10 in South Hants, England

Record Summarywhitish hypophyllous pustules on leaves of garden chrysanthemum in greenhouse
Found asTelia (III)
Date21 November 2010
Associated organismDendranthema
Habitat featuregreenhouse
OS grid refOSGR: SU10
Lat/Lon50° 50’ N, 1° 50’ W
Vice CountySouth Hants, VC no: 11
CountryEngland
Voucher21 Nov 2010[A]
(Please quote this in any queries about this record)

Notes:

Hypophyllous, pale grey to very pale orange, often circinate telia, on underside of diffuse, pale yellowish green spots. Telia can appear spottily brown or orange due to death of surrounding leaf cells. On some leaves telia finally cinnamon and cause small purple ring-spots.

Teliospores: hyaline, pedicellate, two-celled, many with basidium at tip.

The following literature was used to identify this find:

standard photographs and close-ups
standard photographs and close-ups:
macro-photographs
macro-photographs:
photomicrographs
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