30-04-2024 16:22
François BartholomeeusenDear forum members,On April 25 2024, I found one f
03-05-2024 18:04
Riet van OostenHello, Found by Laurens van der Linde on Rubus fr
01-05-2024 23:22
Ethan CrensonHi all, Found late last week in a New York City p
29-04-2024 21:32
Robin IsakssonHi! Found in Sweden. Ascomata with haris, se
01-05-2024 12:54
F. JAVIER BALDA JAUREGUIHello, everyone.An idea for this pyreno, I found u
30-04-2024 19:43
Gernot FriebesHi!We observed this hyphomycete growing between le
29-04-2024 21:51
Mathias HassHi everyone, Found on attached branches of top pa
Dear friends,
here is another collection from Ethiopian mountain rain forest.
I think it is Cookeina colensoi, especially as the shape and size of the spores don't leave much alternatives,or does it?
The apothecia are approx. 1-1,5 cm in diameter, centrally stipitate by a short and thin, but well develloped stipe. The stipelength is approx. half of the cup diameter. Hymenium color is alutaceous, comparable to the hymenium of Tarzetta. The exterior is paler, nearly whitish. The margin is finely crenulate to fimbriate.
Spores are somewhat fusoid, not symetrical, 33-42 x 10-12 µm, smooth, and with knob-like protrudings at each spore end. These protruding can grow up to 2-3 µm in diameter. It seems that they devellop with spore maturity and may be they are a kind of germination of the spore?
Has someone experience with Cookeina colensoi and can confirm the determination (or cancel it ....)
I have the paper of Moravec, where SEM fotos of the spores are illustrated, showing them as being finely rugulose. I couldn't observe this in my material in light microscope.
best regards,
Andreas
i think this is the best choice! but i would exlude possible striation in cotton-blue because of p. venezuelae, which has also long, narrow spores with apiculi.
best
dirk