BioImages (UK)
BIOTA
(living things)
Eukaryota
(eukaryotes)
MYCETEAE
(fungi, moulds and lichens)
ASCOMYCOTA
(spore-shooters)
ASCOMYCETES
(spore shooters)
DOTHIDEOMYCETIDAE
(a subclass of ascomycetes)
PLEOSPORALES
(an order of ascomycetes and lichens)
LEPTOSPHAERIACEAE
(a family of ascomycetes)
Coniothyrium hellebori
(a coelomycete)
Record
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BioImages: The Virtual Field-Guide (UK)

Coniothyrium hellebori Cooke & Massee, 1887 (a coelomycete)

Date: 27 March 2007
Location: Berks, England
Voucher: 27/03/2007[A]
(Please quote this in any queries about this record)
State: Imperfect stage
Record Summary: zoned grey patches on fading leaves of Stinking Hellebore
Associated organism: on fading leaf of Helleborus foetidus
Identification Notes: Leaf spot: commencing ellipsoid, but soon taking in midrib and then extending along it so infection front becomes triangular. Zonate, especially above, in older parts, but darker and less zonate towards infection front. Leaf distal from infection with a dark brown area, apperently killed but not infected.

Pycnidia: epiphyllous, embedded in leaf surface, mainly on pale areas of leaf-spot where they're usually arranged in lines.

Conidia: pale olive-brown, oval to slightly phaseoliform, 4.5-5.5/2.5µm.

Images etc

magnified photograph Infected leaves - top sides Good 403 by 500 pixels
magnified photograph Infected leaves - under sides Good 400 by 500 pixels
magnified photograph Lesion (upper leaf surface) close-up - highly enlarged 500 by 176 pixels
magnified photograph Lesion (upper leaf surface) close-up - highly enlarged 500 by 333 pixels
magnified photograph Lesion (upper leaf surface) close-up - highly enlarged Good 500 by 333 pixels
magnified photograph Lesion (upper leaf surface) close-up - highly enlarged 500 by 333 pixels
magnified photograph Lesion (upper leaf surface) close-up - highly enlarged 500 by 333 pixels
magnified photograph Lesion (upper leaf surface) close-up - highly enlarged 500 by 333 pixels
magnified photograph Lesion (upper leaf surface) close-up - magnified Good 500 by 495 pixels
magnified photograph Lesion (upper leaf surface) close-up - magnified 500 by 333 pixels
magnified photograph Lesions - top sides - close-up 500 by 396 pixels
magnified photograph Lesions - under sides - close-up 498 by 500 pixels
microscope photograph Conidia - magnified 500 by 445 pixels
microscope photograph Conidia - magnified 500 by 333 pixels
microscope photograph Conidia - highly magnified Good 500 by 333 pixels
microscope photograph Conidia - highly magnified 500 by 469 pixels
microscope photograph Pycnidial wall - magnified 500 by 470 pixels
microscope photograph Pycnidial wall - highly magnified Good 500 by 333 pixels

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