菌物学报2026，Vol.45Issue(5)：35-48,14.DOI:10.13346/j.mycosystema.260016
中国云南地星属一新种
A new species of Geastrum(Geastrales,Basidiomycota)from Yunnan Province,Southwest China
摘要
Abstract
Geastrum,the most species-rich genus within the Geastraceae,exhibits a cosmopolitan distribution.Its diagnostic characteristic is the formation of stellate(star-like)basidiomata in most species,which serves as a key morphological feature for field identification.Based on morphological observations and phylogenetic analysis,a new species,Geastrum cangshanense,from Yunnan,southwest China,was described.G.cangshanense exhibits scattered to clustered unexpanded basidiomata(1.5-1.8×1.7-2.0 cm),with shallowly saccate to arched and 7-8 exoperidial rays,broadly conical peristome,silkily fibrillose,apically projecting,darker than the endoperidium and sharply delimited,and globose basidiospores(3.7-5.1 μm).Sequences of the internal transcribed spacers(ITS)and large subunit(LSU)of nuclear ribosomal DNA(nrDNA)were generated,and phylogenetic analyses were conducted using maximum likelihood and Bayesian inference methods.Phylogenetic analyses based on the combined nrITS and nrLSU dataset indicated that G.cangshanense formed a distinct lineage within Geastrum.Detailed descriptions,illustrations and phylogenetic results of the new species are presented herein.关键词
地星科/地星状真菌/系统发育/分类学Key words
Geastraceae/earthstar fungus/phylogeny/taxonomy引用本文复制引用
郑维,屈易寒,唐丽艳,苏锡钧,罗宗龙,宋寒冰,唐松明..中国云南地星属一新种[J].菌物学报,2026,45(5):35-48,14.基金项目
This work was supported by the Youth Program of Yunnan Provincial Department of Education(2025J0815)and the Dali University PhD Start-up Project(KYBS2025038). （2025J0815）
