Studies in lichens and lichenicolous fungi – No. 19: further notes on species from the Coastal Plain of southeastern North America

Geographically disjunct and ecologically unusual populations of Cladonia apodocarpa from hardwood swamps are reported from southeastern North Carolina, and assignment to that species is confirmed with analyses of nrITS sequence data. The separation of Lecanora cinereofusca var. cinereofusca and L. cinereofusca var. appalachensis is discussed in the light of analyses of mtSSU and nrITS sequence data. Lecanora cinereofusca var. appalachensis is considered to merit recognition at the species level, for which the name L. saxigena Lendemer & R.C. Harris (nomen novum pro L. appalachensis (Brodo) non L. appalachensis Lendemer & R.C. Harris) is introduced. Phlyctis ludoviciensis is formally placed in synonymy with P. boliviensis. Phlyctis willeyi is shown to belong to the genus Leucodecton and the new combination L. willeyi (Tuck.) R.C. Harris is proposed. Piccolia nannaria is hypothesized to be a parasite on Pyrrhospora varians and is shown to be more widespread in the Coastal Plain th...

在北卡罗来纳州东南部的硬木沼泽中，发现了地理上不连续且生态特征特殊的Cladonia apodocarpa种群；通过nrITS序列数据（核糖体内部转录间隔区序列数据）分析，确认了这些种群的物种归属。基于mtSSU序列数据（线粒体小亚基核糖体RNA基因序列数据）和nrITS序列数据的分析，本文讨论了Lecanora cinereofusca var. cinereofusca与L. cinereofusca var. appalachensis的分类界限。Lecanora cinereofusca var. appalachensis被认为具有物种级别的分类地位，因此本文引入新名称（nomen novum）L. saxigena Lendemer & R.C. Harris（替代Brodo命名的L. appalachensis，以区别于Lendemer & R.C. Harris命名的L. appalachensis）。Phlyctis ludoviciensis被正式归为P. boliviensis的异名。研究表明Phlyctis willeyi应归入Leucodecton属，并提出新组合L. willeyi (Tuck.) R.C. Harris。Piccolia nannaria被推测为Pyrrhospora varians的寄生物，且在沿海平原的分布范围比……