15-12-2025 21:11
Hardware Tony
Small clavate hairs, negative croziers and IKI bb
15-12-2025 07:09
Danny Newman
indet. Rutstroemiaceae sp. on unk. fallen leavesMc
15-12-2025 15:54
Johan Boonefaes
Unknown anamorph found on the ground in coastal sa
15-12-2025 15:48
Danny Newman
Melanospora cf. lagenaria on old, rotting, fallen
15-12-2025 07:05
Danny Newman
Pseudosclerococcum golindoi (det: Zotto)near Cosb
15-12-2025 11:49
Danny Newman
ITS sequences from the following two collections B
15-12-2025 12:34
Danny Newman
indet. Rhytismataceae on oak leafnear Purchase Roa
09-12-2025 12:06
Andgelo Mombert
Bonjour,Je recherche l'article concernant Hypobryo
Hi,Collected in October 1992 on decaying petioles of Petasites hybridus:
Perithecia superficial, gregarious, subglobose, flattened upper part, 0.3-0.4(0.5) mm diam., indistinct papillate, yellow-orange, with a crown of spreading, hyaline hairs.
Asci 8-spored, 73-83x9-10 µm.
Spores narrowly ellipsoid, 18-23(25)x5.5-7 µm, 1-septate, filled with 1-2 µm diam. guttules, smooth, hyaline.
Perithecial wall of textura angularis. Processes tapering, up to 115x13 µm, composed of agglutinated 2 µm diam. hyphae, hyaline.
Only a drawing available. Any idea? Thanks in advance.
Description of ascomatal wall, colour of perithecia in KOH as well as in lactic acid are required.
If there is no changing colour, you have choice among four genera:
Lasionectria, Lasionectriella, Ijuhya and Hydropisphaera, which are separated by characteristics of the cells composing the wall.
Did you see some orange, oily droplets in ascomatal wall or in hymenium?
Good luck
Christian