皖西大别山北坡苔藓植物区系

该研究于2019-2021年4次对安徽大别山北坡进行苔藓植物野外考察和标本采集，对采集到的1 517份标本鉴定以及文献整理，统计分析该区苔藓植物物种组成、区系地理组成；并与华东、华中、华北等地的苔藓植物区系地理组成进行比较，以明确大别山北坡苔藓植物区系的归属问题。结果表明：(1)安徽大别山北坡共有苔藓植物80科180属482种(包括种以下单位);该次调查增加了12科40属206种，其中安徽省新记录种9个。(2)发现受威胁苔藓植物2种——滇西高领藓(Glyphomitrium minutissimum)属于极危(CR),瘤根真藓(Bryum bornholmense)属于易危(VU)。(3)大别山北坡苔藓植物区系拥有3个世界性单种科，14个世界性单种属，且有34个世界性寡种属(2～6种),该区单种属和寡种属(48属)占该区总属数的26.67%,表明该区苔藓植物起源古老。(4)大别山北坡苔藓植物区系地理成分复杂多样，以北温带成分(26.43%)和东亚成分(24.89%)为主，热带亚洲成分(14.54%)次之。(5)安徽大别山北坡苔藓植物区系与华东(西天目山、清凉峰、阳际峰)区系的关系最为密...

Bryophytes Flora in the Northern Slope of Mt. Dabie, Anhui Province

In this study, bryophyte investigation and specimen collection were carried out on the north slope of Dabie Mountain in Anhui Province for four times from 2019 to 2021. Based on the identification of 1 517 specimens collected and published literatures, the bryophyte composition and floristic composition in this area were studied. At the same time, the attribution of bryophyte flora on the northern slope of Mt. Dabie were explored through comparison with bryoflora of east, north and central China. The results showed that: (1) a total of 482 species (including infraspecific taxa) of bryophytes belonging to 180 genera and 80 families were in the study area, and 206 species, 40 genera and 12 families were added to the survey, among which 9 species were new additions to Anhui Province. (2) Two threatened bryophytes were found, Glyphomitrium minutissimum belonging to CR and Bryum bornholmense belonging to VU. (3) There were three worldwide monotypic families, 14 monotypic genera and 34 oligotypic genera (2-6 species), accounting for 26.67% of the total genera, which reflected the ancient and primitive nature of the bryophyte flora in the area. (4) The bryophyte flora in this area was complex and diverse, of which North Temperate components (26.43%) and East Asia components (24.89%) were predominant, followed by Tropical Asia components (14.54%). (5) The bryophyte flora of this area was most closely related to the flora of east China (The western Tianmu Mountain, Qingliangfeng National Reserve and Yangjifeng National Reserve), because of its similar geoclimatic characteristics and species composition. Show that, the bryophyte flora of the northern slope of Mt. Dabie should belong to the flora of east China.