BioImages: The Virtual Field-Guide (UK)

Calonectria pyrochroa (Desm.) Sacc., 1878 (a pyrenomycete)

Date: 19 November 2006
Location: Berks, England
Voucher: 19/11/2006[A]
(Please quote this in any queries about this record)
State: Fruitbody
Record Summary: on fallen, dead, black, wet, rotting, Holly leaves
Associated organism: on fallen, dead, black, wet, rotting leaf of Ilex aquifolium
Identification Notes: Four leaves with colonies on underside, but one leaf with colony on upper side.

Perithecia: rough-walled, globular, golden-yellow, with brown-ringed ostiole when mature, superficial, in troops, each seated on a small red-brown hyphal mat, mostly hypophyllous.
Ascospores: fusiform, 3-septate, cells unswollen, 64/7µm, and forming a single fascicle in ascus (multiseriate).

Anamorph not seen.

Images etc

magnified photograph Perithecia - immature - damp - enlarged 500 by 372 pixels
magnified photograph Perithecia - immature - damp - enlarged 500 by 333 pixels
magnified photograph Perithecia - immature - damp - enlarged 500 by 333 pixels
magnified photograph Perithecia - immature - damp - magnified 500 by 333 pixels
magnified photograph Perithecia - immature - damp - magnified 500 by 398 pixels
magnified photograph Perithecia - immature - damp - magnified 500 by 345 pixels
magnified photograph Perithecia - mature - dry - lateral view - magnified 500 by 221 pixels
magnified photograph Perithecia - mature - dry - lateral view - magnified 500 by 244 pixels
magnified photograph Perithecia - mature - dry - lateral view - magnified 500 by 306 pixels
magnified photograph Perithecia - mature - dry - top view - magnified 500 by 373 pixels
magnified photograph Perithecia - mature - dry - top view - magnified 500 by 308 pixels
magnified photograph Perithecia - mature - dry - top view - magnified 500 by 219 pixels
naked eye photograph Perithecia on leaf upper surface 500 by 319 pixels
naked eye photograph Perithecia on leaf under surface - only a few 500 by 346 pixels
naked eye photograph Perithecia on leaf under surface 500 by 349 pixels
naked eye photograph Perithecia on leaf under surface 500 by 324 pixels
naked eye photograph Perithecia on leaf under surface 500 by 333 pixels
microscope photograph Ascospores - magnified 455 by 500 pixels
microscope photograph Ascospores - magnified 500 by 415 pixels
microscope photograph Ascospores in asci - magnified 500 by 451 pixels
microscope photograph Ostiole - magnified 500 by 406 pixels
microscope photograph Perithecial wall - magnified 500 by 333 pixels
microscope photograph Perithecial wall - magnified 500 by 420 pixels
microscope photograph Squash prep - magnified 500 by 462 pixels

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