When: 2011-10-29

Collection location: Sintra, Portugal [Click for map]

Who: zaca

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By: zaca
2011-10-30 09:38:29 CET (+0100)

Thanks again E-C for your comment. The specimens in this observation were indeed very small, the one in the last two photos has 0.5 cm for the diameter of cap and 3 cm for the stem lenght.
With so similar species if possible is better to observe the spores.
I already uploaded a photo with the spores and their dimensions, which is one more point in favor of P. lactea.

By: Europe-coprinologist
2011-10-30 07:35:35 CET (+0100)

Hello Zaca.

Discriminatory values ​​to separate taxonomic species of the genus Parasola, are mainly based on spore size and shape. Excluding some species with ellipsoidal spores, the rest have a tendency to lentiform spores. Lentiform In this way, also have small differences. Some have a more pronounced apical papilla … Others are less marked angles …. The cistidios are also important. In the case at hand: Parasola plicatilis is larger and more elongated spores that Parasola lactea = leiocephala Macroscopically it is very difficult to differentiate these species. Parasola leiocephala is very variable in color. Also P. plicatilis is usually a bit bigger, and generally comes out usually in smaller groups. By the way …. The majority of citations, of P. plicatilis, are wrong and is actually P. leiocepahala. In fact P. plicatilis is a taxon uncommon. sorry about my bad English.
Thanks E-C for your proposal
By: zaca
2011-10-29 23:19:23 CEST (+0200)

Can you tell me what are the main differences between the two species: Parasola plicatilis and P. lactea?

Parasola lactea (A.H. Sm.) Redhead, Vilgalys & Hopple 2001
By: Europe-coprinologist
2011-10-29 23:16:42 CEST (+0200)

Within the difficulty always generates a Parasola identify at first glance, this species is recognizable by its bright colors when ripe. The last analysis molecular have resulted in the synonymy of Parasola leiocephala = Parasola lactea.
As the basionym is Pseudocoprinus lacteus A.H. Sm. 1946, before Coprinus Leiocephalus P. S. Orton 1969, the correct nomenclatural taxon is Parasola lactea.