Under Maintenance This site is temporarily in READ-ONLY mode while under maintenance. For updates please follow @NatureShare on Twitter or the NatureShare channel on Telegram.
No species found by that id.

Observer

Tags / Aspects

none

Description

none

Date & Time

  2015-05-25 03:31 PM

Location

  -38.551707 , 143.75813 : 242.826 m

Near Barwon Downs VIC 3243, Australia

Discussion

Star     Comment    

  1. zeke1944  Entoloma albidosimulans. Gates p64. Often on trunks of Dicksonia antartica.

    Reply • 21 Aug

  2. John Walter  There are two all white collybioid Entolomas currently described for Tasmania (Plus 3 that are tricholomatoid in shape). They are E. albidosimulans and E. totialbum. They are readily separated microscopically however I assume we only have this image to work on. E. albidosimulans has a cap that has a "deflexed then straight margin" and is "finely tomentose all over, becoming radially fibrillose with age" and undergoes a colour change when older to "pale ochre yellow to pink". The E. totialbum cap has a "straight, entire margin" and is "white becoming pink-tinged, glabrous, dry, slightly aeriferous".

    Reply • 22 Aug

  3. John Walter  The pink on the lower cap is spores deposited from above but there does appear to be a hint of yellowing at its left apex. It is difficult to determine if it has a finely tomentose surface. There is no hint of decurved margins in your image, even the small specimen in the inset appears to have straight margins and Gates images of E. albidosimulans this size clearly show an in-rolled margin. The gills of E. albidosimulans are described as "moderately distant" whereas on E. totialbum they are "crowded", and also described as having a serrulate edge. If you look closely at the gills in your post between 11 o clock and midday, you can see minute teeth or serrulations.

    Reply • 22 Aug

  4. John Walter  I am tending towards E. totialbum, largely on the serrulate gills, however even there, there is contradictory detail. E. albidosimulans can often have gills that are "distinctly emarginate with a distinct decurrent tooth" but they are otherwise adnate. The description for E. totialbum lists the gills as "adnate with decurrent tooth". The sharp dip in the gills as they approach the stipe is defined as emarginate and is apparent on this sample. Unfortunately there have been very few collections of E. totialbum so it is possible it might also show this feature. This could very easily be either species. One feature of E. totialbum that might help separate these is that it's stipe is slightly yellowing at the base. If you have other images of this group that show the base of the stipe it might help. I was introduced to E. albidosimulans by Genevieve Gates in the Tarkine a few years back, those specimens were older and rain affected but they were located on the trunk of Dicksonia antarctica. The text I have does not describe the substrates for either species unfortunately.

    Reply • 22 Aug

  5. John Walter  I just noted on the description for E. albidosimulans that the gill edges can be "slightly fimbriate" meaning lightly toothed. This now puts the weight of evidence back towards E. albidosimulans.

    Reply • 22 Aug

  6. zeke1944  There you go.

    Reply • 22 Aug

  7. Cathy Powers  Entoloma albidosimulans added to dataset.

    Reply • 23 Aug




NS Observation No. 5B7BFD3FED2A8917C2000001
Created 2018-08-21 09:56 PM (3 months ago)
Created By zeke1944
Updated 2018-08-26 01:29 PM (3 months ago)
Updated By John Walter
Edits 2
Photo Quality
Camera Date-Stamp Yes
Camera Geotag Yes
Permalink 5b7bfd3fed2a8917c2000001
Data Export Files Please log in