Data from: Molecular phylogenetic evidence corroborates morphology but not chemistry in the Lepraria neglecta group

The Lepraria neglecta group is a distinctive entity within the sterile,
asexually reproducing lichen genus Lepraria whose constituent populations
are united by their occurrence in exposed habitats and the development of
a pseudocortex on the granules of the thallus. Previous studies have
concluded that the group represents a monophyletic entity; however the
question of how to classify the chemical variability exhibited within the
group has remained unresolved. A phylogeny was inferred from ITS1, 5.8S,
and ITS2 sequence data generated from a geographically and chemically
broad sampling of populations within the L. neglecta group. While the
inferred phylogeny recovered the core L. neglecta group as a strongly
supported and monophyletic, the chemotypes within L. neglecta s.l. (i.e.,
the core-neglecta group excluding L. granulata) were not recovered as
monophyletic and relationships within the group largely remain poorly
resolved. Based on these results, a pragmatic circumscription for the
group is proposed that emphasizes the strong correlation between
morphological, ecological, and molecular characters over the lack of
resolution between chemical and molecular characters. The names applied to
members of the group are placed in synonymy with L. neglecta (these are L.
alpina (basionym Crocynia alpina), L. alpina var. zeorinica, L.
angardiana, L. borealis, L. caerulescens, L. caesioalba (basionym Crocynia
caesioalba), L. caesioalba var. groenlandica, L. gelida, L. svalbardensis,
and L. zonata). The results of these molecular phylogenetic analyses also
1) did not support the distinction of L. salazinica from L. elobata, thus
that name is placed in synonymy here, and 2) elucidated the occurrence of
L. humida in North America.