Subjects: Biology >> Botany >> Applied botany submitted time 2022-03-30 Cooperative journals: 《广西植物》
Abstract: Two new tetraploids quillworts species, Iso雝es longpingii and I. xiangfei, from China are described and illustrated. I. longpingii is a fully submerged plant found in a small pond of Hunan Province. It is morphologically similar to I. sinensis, but differs in its small and tuberculate-cristate megaspores and soft slender leaves that grow up to 60 cm. It is also similar to hexaploid I. orientalis, but differs in its 44 chromosomes and tuberculate-cristate megaspores. I. xiangfei is most similar to diploid I. yunguiensis in megaspore ornamentation, but differs in its microspore ornamentation, oblong sporangium, and 44 chromosomes. There are a few individuals of I. longpingii found in Ningxiang County of Hunan Province, and I. xiangfei is distributed in the wetlands of Tongdao and Huitong counties of Hunan Province. Because of their limited geographic range, small populations, fewer individuals and disturbed habitats, I. longpingii and I. xiangfei are ecaluated as critically endangered (CR) and vulnerable (VU) category, respectively, according to the IUCN Red List criteria. A key to all the current known Chinese quillworts is also provided for further taxonomic identification and conservation of these rare and endangered plants in China.
Subjects: Biology >> Botany >> Applied botany submitted time 2019-01-30 Cooperative journals: 《广西植物》
Abstract:描述了发现自西藏南部的毛茛科毛茛属二新种:隆子毛茛 Ranunculus longziensis 与睫毛毛茛 R. densiciliatus W. T. Wang 在亲缘关系上甚为相近,与后者不同的是此新种的茎无毛,叶也无毛,基生叶不分裂,多具 5 条脉,茎生叶呈披针状条形;单根毛茛 R. uniradicatus与聂拉木毛茛 R. nyalamensis W. T. Wang 在体态上稍微相似,与后者不同的是此新种为一年生草本植物,只具一条须根,茎无毛,花瓣呈狭卵形,子房被短柔毛。
Subjects: Biology >> Botany submitted time 2018-04-08 Cooperative journals: 《广西植物》
Abstract:该文描述了自云南西北部发现的毛茛科银莲花属一新组,维西银莲花组Sect. Deinostigma和一新种,维西银莲花Anemone weixiensis。此组与卵叶银莲花组有亲缘关系,与后者的区别在于其心皮较少,约11枚,子房被短柔毛,柱头明显,呈椭圆体形,瘦果被短柔毛,不扁,无肋,顶端具椭圆体形宿存柱头。
Subjects: Biology >> Botany submitted time 2018-04-08 Cooperative journals: 《广西植物》
Abstract:该文描述了自西藏南部发现的毛茛科毛茛属一新种,康马毛茛(Ranunculus kangmaensis)。此种与特产云南的梅里山毛茛(R. meilixuoshanicus Kadota & Ming)近缘,但花葶较高,叶较大,3深裂,花具8枚较大,并具较长爪的花瓣而不同。
Subjects: Biology >> Botany submitted time 2018-03-27 Cooperative journals: 《广西植物》
Abstract:该文描述了自云南西北部发现的毛茛科翠雀花属二新种:短葶翠雀花Delphinium breviscaposum与察隅翠雀花D. chayuense W. T. Wang在亲缘关系上相近,与后者的区别在于本种植株具3条簇生短花葶,总状花序的轴和花梗无毛,小苞片较长,萼片较小,退化雄蕊的瓣片不分裂;丝苞翠雀花D. filibracteolum与拟长距翠雀花D. dolichocentroides W. T. Wang近缘,与后者的区别在于本种的花组成圆锥花序,花梗、萼片和萼距均较短,退化雄蕊的爪无附属物,心皮无毛。