Peniophora sp. on Olea twigs - to confirm / show

Es gibt 6 Antworten in diesem Thema, welches 885 mal aufgerufen wurde. Der letzte Beitrag () ist von Steve_mt.

    I have already encountered Peniophora albobadia on Ceratonia siliqua, now I found something similar on falling and decaying branches of Olea europaea and possibly Schinus terebinthifolia. Do you confirm the species or I should do further checks. I do have specimens at home.


    many thanks

    Duportella malenconii (syn. Peniophora malenconii ) makes more sense geographically, but how can one tell these two species apart morphologically? I have specimens that I can check, hopefully not involving an experienced task, such as the hyphal system.


    Nevertheless, Peniophora albidobadia is reported from the Mediterranean region according to GBIF but the majority (99%) are from the US - hence there is fine thread of doubt that it may still be P. albidobadia from a distribution point of view.

  • Steve_mt

    Hat den Titel des Themas von „Peniophora albobadia on Olea twigs - to confirm / show“ zu „Peniophora sp. on Olea twigs - to confirm / show“ geändert.

    I received another suggestion - Porostereum spadiceum but for a different collection - a fungus without violet hues between the brown and white zones (see images below)


    Is the violet tinge shown in the original post specific to Duportella malenconii ? Maybe even I have a mixed collection here with 9060s seems to be a bit different from the rest ? It so confusing hehe! I should see the spores at this stage...


    - - - - - - - - - - - - -


    Photos of another collection - similar to IMG 9060 in the original post. Is it still D. malenconii? - Small crusts merging into each other without forming resupinations or outgrowth brackets.


    May be a closeup of nature



    May be a closeup of nature


    Hi Steve,

    Zitat von Steve_mt

    Peniophora albidobadia is reported from the Mediterranean region according to GBIF

    also in the newest work "Corticioid fungi of Europe" by K.H. Larsson et al. (2021) Dendrophora (Peniophora) albidobadia is not included for Europe!

    Dendrophora albidobadia and Duportella malenconii belong to the family Peniophoraceae. The best difference is the thick-walled, more or less brown dendrohyphidia, which are only found in Dendrophora albidobadia.

    Zitat von Steve_mt

    Is the violet tinge shown in the original post specific to Duportella malenconii ?

    The hymenophore color of Duportella malenconii is purplish brown with white margins when young and dark brown to blackish brown later.

    Porostereum spadiceum is macroscopically also still very similar, but has no purplish tints and has not yet been found on Olea europaea. Also this species has cylindrical spores and no strongly incrusted lamprocystidia.


    Greetings

    Frank

    Many thanks Frank I am excluding P. albidobadia and I trust this is Duportella not Porostereum.


    I spent like 90 minutes observing several mount of specimens I collected a week ago, but a big disappointment as I found no informative data. I sliced the upper layers of the fungus where it was brownish or sometimes blackish.


    The fungus is very hyaline in water and do not stain well with congo red. Then there was a lot of 'debris' and artifacts released from the mycelium, probably bacteria. I managed to see three spores (allantoid, ca. 7.5 um), clamp junctions, mycelia with short branches at the apex (?) and what seems to be special darker cystidia. I think in one case I saw a metalloid cystidia which was short. Apart from that there was a tight meshwork of interwoven sterile mycelia and nothing else very interesting, opposed to what other colleagues (Eg Italian) found for both Duportella and Porostereum. Maybe because it is viewed one week after collection.


    Well, Duportella remains the best match.


    Thank you Frank, you have been very helpful










    Thanks Frank. I am excluding albidobadio and I trust this is Duportella not Porostereum.


    I spent like 90 minutes observing several mount of specimens I collected a week ago, but a big disappointment as I found no informative data. I sliced the upper layers of the fungus where it was brownish or sometimes blackish.


    The fungus is very hyaline and do not stain well with congo red. Then there was a lot of 'debris' and artifacts released from the mycelium, probably bacteria. I managed to see two spores (allantoid, ca. 7.5 um), clamp junctions, mycelia with short branches at the apex (?) and what seems to be special darker cystidia. I think in one case I saw a metalloid cystidia which was short. Apart that there was a tight meshwork of interwoven sterile mycelia and nothing very interesting, opposed to what other colleagues (E.g. Italian) found for both Duportella and Porostereum