I’ve been trying to figure out Bob Ramsey’s concept of L. nettyana. It actually seems to be very simular to Demoulin’s L. lambinonii. Comparing the description of L.nettyana (Mycotaxon 11(1):185-188 with L. lambinonii description in Nordic Macromycetes is very close; a little less so with British puffballs book…. ah what to do.) Understanding of the whole umbrinum – molle complex is a work in progress to me.

Back to your description reading Ramsey’s published description of nettyana does not mention any pink coloration, stating the color to be light greyish brown and the picture and discription in the article shows more granular character and much less spines. Your collection looks more like a young perlatum than Ramsey’s nettyana. checkout the mycotaxon article which is now online and see what you think.