Bracteophyton variatum gen. et sp nov., an early Devonian plant from the   Xujiachong Formation of Yunnan, China

doi:10.1086/381919

CORC > 北京大学 > 地球与空间科学学院

	Bracteophyton variatum gen. et sp nov., an early Devonian plant from the Xujiachong Formation of Yunnan, China
	Wang, DM ; Hao, SG
刊名	international journal of plant sciences
	2004
关键词	Bracteophyton variatum bract Xujiachong Formation Lower Devonian Yunnan of China EARLY LAND PLANTS POSONGCHONG FORMATION EASTERN YUNNAN HSUA-DEFLEXA NEW-YORK PROVINCE LYCOPOD BARINOPHYTACEAE LECLERCQIA
DOI	10.1086/381919
英文摘要	Bracteophyton variatum gen. et sp. nov. is described from the Lower Devonian (upper Pragian-lower Emsian) Xujiachong Formation, Qujing District of eastern Yunnan, China. The smooth axes are mainly isotomous. They terminate in short and compact strobili consisting of lateral fertile units arranged helically. Each fertile unit comprises one or two bracts and an elongate-ovate adaxial sporangium. The sporangium seems to possess a distal dehiscence around the convex margin. Bracteophyton variatum differs from bract or sporophyll-bearing plants such as Stachyophyton, Adoketophyton, and the Barinophytales mainly in the shape and variable number of bracts in a fertile unit. In the absence of vegetative microphylls, it is morphologically far less related to the lycopods. Resembling the sporangial arrangement in spikes of some zosterophylls, the spirally inserted fertile units forming terminal compact strobili in B. variatum demonstrate the developmental changes in the apical meristem. Until more is known, this new plant is considered as incertae sedis.; Plant Sciences; SCI(E); 11; ARTICLE; 2; 337-345; 165
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/400455]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Wang, DM,Hao, SG. Bracteophyton variatum gen. et sp nov., an early Devonian plant from the Xujiachong Formation of Yunnan, China[J]. international journal of plant sciences,2004.
APA	Wang, DM,&Hao, SG.(2004).Bracteophyton variatum gen. et sp nov., an early Devonian plant from the Xujiachong Formation of Yunnan, China.international journal of plant sciences.
MLA	Wang, DM,et al."Bracteophyton variatum gen. et sp nov., an early Devonian plant from the Xujiachong Formation of Yunnan, China".international journal of plant sciences (2004).