29-05-2020 11:28
Maria PlekkenpolHello, on cowdung I saw these whitish asco's. Foll
30-05-2020 13:52
Andrés Valverde Valera
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19-04-2015 20:20
Enrique Rubio
Hi again Could you help me with this paper? NANN
31-05-2020 07:26
Yulia LytvynenkoDear friends.Looking for a copy of the following w
28-05-2020 21:28
Marek CapounHello everybody,I need help with a determination o
29-05-2020 20:14
Maren Kamke
Good evening,A pyrenomycetes-species on rosa sp.,
28-05-2020 11:45
Hardware Tony
Found this hairless orange operculate fungi larges
Spores mature deep purple, young hyaline. I think I saw very fine granulation in the young spores, as well as fine warts. Mature spores with fissures/reticulated, 19-21 x 10-13.
Paraphyses slender, longer than the asci, yellow(ish). Septated, sometimes forked, with a slightly swollen top (not all of them).
Following van Brummelen I came to Ascobolus geophilus, but maybe I'm very wrong :)
What is your opinion? Thanks in advance!
Interesting! It is sometimes difficult to separate certain species of this genus. Compares with A.behnitziensis near geophilus. According to Dissing, geophilus spores are later adorned ornamented, unlike behnitziensis. Also try to make other preparations in the Melzer showing the asci; you say negative Melzer whereas normally the reaction must be positive.
Michel.
van Brummelen states that only very young asci are amyloid in A. behnitziensis - i.e., the blueing might be visible only in lower part of the hymenium, see here: https://www.nahuby.sk/obrazok_detail.php?obrazok_id=606132
Cheers,
Viktorie
Michel, what I read in van Brummelen about geophilus:
Asci cylindric-clavate, tapering
downwards, rounded above, 160-200 X 17- 20 p. (according to Seaver rgr6, I.e.:
"200-250 X 15- 18 p,"), 8-spored; the wall not, or scarcely, blue in Melzer's reagent.
So I am now a bit confused?