Kerrigan Richard W, Callac Philippe, Parra Luis A
Sylvan Research, 198 Nolte Drive, Kittanning, Pennsylvania 16201, USA.
Mycologia. 2008 Nov-Dec;100(6):876-92. doi: 10.3852/08-019.
Ongoing field and laboratory studies have led to our recognition of new taxa in Agaricus section Bivelares, a recent combination and now the earliest synonym and correct name of section Duploannulati. Agaricus cupressophilus and A. tlaxcalensis, in the new Agaricus subsection Cupressorum, and A. agrinferus, A. devoniensis subsp. bridghamii, and A. subsubensis in Agaricus subsection Hortenses, are described. Agaricus subfloccosus is lectotypified. Phylogeny reconstruction methods with ITS1+2 DNA sequences were used to determine appropriate placements of the new taxa. Collectively these new taxa and phylogenetic associations represent a substantial augmentation and clarification of our knowledge of section Bivelares; described, sequenced species-level taxa in the northern hemisphere are increased from six to 10, a distinct subsectional lineage is revealed and infraspecific resolution within A. devoniensis is improved. An anomalous ITS1+2 sequence is documented in one collection of A. subsubensis. Preliminary data on another novel member of Bivelares from France also are provided. Several of these taxa are rare, highlighting opportunities and challenges for documenting biodiversity in this group. Additional comments on related taxa treated in recent publications are also provided.
正在进行的野外和实验室研究使我们在蘑菇属双环组（Bivelares）中识别出了新的分类群，双环组是一个最近合并的组，现在是双环纹组（Duploannulati）最早的异名和正确名称。描述了新的蘑菇亚组柏木蘑菇亚组（Cupressorum）中的柏木蘑菇（Agaricus cupressophilus）和特拉克斯卡拉蘑菇（A. tlaxcalensis），以及蘑菇亚组园圃蘑菇亚组（Hortenses）中的农田蘑菇（A. agrinferus）、德文郡蘑菇布里奇汉姆亚种（A. devoniensis subsp. bridghamii）和苏苏本西斯蘑菇（A. subsubensis）。对絮状蘑菇（Agaricus subfloccosus）选定了后选模式。使用ITS1 + 2 DNA序列的系统发育重建方法来确定新分类群的合适位置。总体而言，这些新分类群和系统发育关联极大地扩充和澄清了我们对双环组的认识；北半球已描述并测序的物种级分类群从六个增加到了十个，揭示了一个独特的亚组谱系，并提高了德文郡蘑菇种内分辨率。在一份苏苏本西斯蘑菇标本中记录到了一个异常的ITS1 + 2序列。还提供了来自法国的双环组另一个新成员的初步数据。这些分类群中有几个很罕见，凸显了记录该类群生物多样性的机遇和挑战。还对近期出版物中处理的相关分类群提供了更多评论。
