The second photograph, from 'behind', shows some new toadstools appearing. The original toadstools are growing quite large now and look pretty spectacular!
Pam, have added two more photographs today (05/04), though I'm not sure the second has been successfully uploaded - it shows a nice view of the gills. These are opening out to look quite like the toadstools I had paired with them originally and they also had the same fly on them ..!
You've got to admit this is one impressive looking Amanita! No images of gills as yet. I must admit it can be confusing when there are two species growing close together that have some similar characteristics. The images above I'm fairly confident to say that they are all A. pyramidifera, as for your original images of mature specimens I can't be 100% certain.
Three undersides added ... just realised the mirror has a magnifier on one side ... how handy!! This our second Significant find for fungus at the Retreat! Ooh - not sure they have shown ... let me know and I can delete earlier ones if necessary.
Perhaps I have to delete the older images for the photographs of their 'undies' to show? I did upload them and I also put them on our FB page: Clyde River Retreat. However, I now have taken still more photographs as today the two right-hand toadstools have fused both the caps and the stalk which is now one big fat stalk. Perhaps I need to do a Pyramidifera Part II entry???
Right-oh. I have re-loaded the underside photograph that I posted on 5 April which for some reason didn't stay. I have now added from today, two photographs showing how the two right-hand toadstools have merged into one another - one shot above, one shot below. Began to pour with rain so the pics are not great. Interesting though, how these are developing.
Pam, that last attempt to load photos didn't work, so I have deleted two of the previously uploaded shots and replaced with two newer ones - one from 5 April (underside) and one from today showing how the two right-hand toadstools have fused. Unfortunately, I couldn't add the sixth shot that shows how the two stems have also fused into one big fat stem. I have had this problem before with uploading photographs ...
Maybe if you contact 'technical support' they may be able to be of assistance. Great to finally see the underside of these fungi. Fantastic looking things especially when young. Hope you're keeping a list of the fungi documented at Clyde River you could almost do your own FungiFlip sheet!
BTW it is now 18/05/2020 and these are still visible but they have collapsed and lost their shape and are now quite yellowish. Still showing the spikes though.