Collection location: Reserva Ecologico del Cerro San Juan, Nayarit, Mexico [Click for map]
Isotype collection # A. Rodriguez & Perez Ramirez 1385.
The difference between Amanita jacksonii and A. tullossii is supposed to be the number of cells thick the subhymenium is. Unfortunately, the subhymenium in the type collection has been crushed due to repeated drying, and it is difficult to observe.
|I’d Call It That||3.0||6.83||1||(Alan Rockefeller)|
sum(score * weight) /
(total weight + 1)
and collect a neotype.
tullossii. There is no difference whatever between the subhymenia of jacksonii and the Mexican species.
As I noted yesterday, there is a paper expected to be published sometime soon in which the Mexican material most similar to A. jacksonii is proposed to comprise multiple taxa on genetic grounds. The last time I heard, DNA had not been extracted from any of the types deposited in Xalapa that define taxa in the Caesareae. Hence, I don’t know if it is possible to assign tullossii to one of the taxa that will be reported in the coming paper. I’m waiting until the data becomes available, and then hope to see what specific collections yielded what specific sequences.