Images 16382 and 16286, which are of buttons, appear to have a membranous white layer resting above the pileus. It would give the impression that A. roseitincta has a universal veil (UV) conformed not only by the powdery layer and wart layer but also an outer membranous layer. A membranous UV is not reported in any descriptions by Murrill or Jenkins & Vinopal.
It is possible that what these images show is a consequence of various factors already observed before in A. roseitincta:
1) a membranous partial veil (PV) found, at times, resting at the bottom of the stipe just above the bulb
2) tearing irregularly while remaining attached (in parts) to the pileus margin, and later may completely fall off
3) solitary or gregarious habit
Considering these last two characteristics I believe that what the images (18382, 16386) are showing is a PV of another fruiting body which has fallen off and landed on the button.
Although nothing has been mentioned here in regards to the membrane in these images, I would like to add my interpretation of what I am observing.