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首页> 外文期刊>Nordic Journal of Botany >Taxonomic status and distributional range of Aconitum angustius (Ranunculaceae) based on cytological evidence
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Taxonomic status and distributional range of Aconitum angustius (Ranunculaceae) based on cytological evidence

机译：分类地位和分布范围乌头angustius(毛茛科)的基础上细胞学证据

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摘要

Aconitum sinomontanum Nakai var. angustius W. T. Wang (Ranunculaceae) has been recorded to occur only in the Anhui, Jiangxi and Hunan provinces, China. However, it is here revealed to be a much more widespread tetraploid (2n = 32) entity almost allopatric with the diploid (2n = 16) A. sinomontanum s.s. The former entity has a southern distribution in China, occurring in Anhui, Chongqing, northern Guangxi, Guizhou, southern Henan, northwestern Hubei, Hunan, and Jiangxi, while the latter has a relatively northern distribution, occurring in northeastern Chongqing, southern Gansu, Hebei, western Henan, western Hubei, eastern Qinghai, Shaanxi, Shanxi, and Sichuan. There is only minor overlap of the geographical distributions of the diploid and tetraploidpopulations, with both entities documented as co-occurring in northeastern Chongqing and northwestern Hubei. The two entities also are very different from each other in karyotypic constitution. As A. sinomontanum var. angustius is fairly well differentiated from A. sinomontanun in external morphology, ploidy level, karyotypic constitution and geographical distribution, it seems justified to recognize A. sinomontanum var. angustius, an entity possibly of allopolyploid origin, as the independent speciesA. angustius (W. T. Wang) W. T. Wang.
机译：Aconitum sinomontanum Nakai刺angustius w . T。王(毛茛科)已经被记录只有在安徽、江西、湖南等省,中国更广泛的四倍体(2 n = 32)实体几乎与二倍体分区(2 n = 16)。前实体有sinomontanum砂岩分布在中国南部,发生在安徽、重庆、广西北部、贵州、河南南部、湖北西北部、湖南江西,而后者相对北部分布,发生在东北重庆、甘肃南部、河北、河南西部、湖北西部,青海东部,陕西、山西、和四川。二倍体和地理分布tetraploidpopulations,实体记录共病的东北部重庆和湖北西北部。实体也非常不同在核型宪法。var. angustius相当分化良好答:sinomontanun在外部形态、倍性水平,核型宪法和地理分布,似乎合理的承认。sinomontanum var. angustius,可能一个实体的异源多倍体起源、独立

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