Vegetative Characters, Growth Habit and Microsporangiate Strobilus of Lycopsid Minostrobus chaohuensis

doi:10.1371/journal.pone.0122167

CORC > 北京大学 > 地球与空间科学学院

	Vegetative Characters, Growth Habit and Microsporangiate Strobilus of Lycopsid Minostrobus chaohuensis
	Meng Mei-Cen ; Wang De-Ming ; Yao Jian-Xin
刊名	plos one
	2015
DOI	10.1371/journal.pone.0122167
英文摘要	Late Devonian Minostrobus chaohuensis is one of the earliest monosporangiate-strobilate isoetaleans. Based on new material of this plant, the vegetative axis and microsporangiate strobilus are studied in detail, and the whole plant knowledge is summarized. The vegetative axis is isotomously branched. The stem is up to 55 mm in diameter with helically arranged leaf cushions. Stems and thick branches bear long fusiform leaf cushions and interareas with vertical linear ornamentations. A ligule pit, oblanceolate leaf scar, and vascular bundle scar appear on the leaf cushion. Distal axes have persistent lanceolate leaves and rhombic leaf bases. The microsporangiate strobilus is cylindrical in shape, possesses sporophyll with alate pedicel and long triangular lamina, uniseriate sporangial wall, subarchesporial pad inside the sporangium, and microspore with cingulum. Based on comparisons with other isoetaleans, the usage of the terms "leaf cushion" and "leaf base" is discussed, and Minostrobus chaohuensis is considered as a tree-like lycopsid. It suggests that arborescent isoetaleans with monosporangiate strobili had appeared and diversified in the Late Devonian. The multi-dichotomous branching system of Minostrobus provides new data on the evolution of growth architecture in rhizomorphic lycopsids.; SCI(E); PubMed; 0; ARTICLE; dmwang@pku.edu.cn; yaojianxin@gmail.com; 3; e0122167; 10
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/188185]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Meng Mei-Cen,Wang De-Ming,Yao Jian-Xin. Vegetative Characters, Growth Habit and Microsporangiate Strobilus of Lycopsid Minostrobus chaohuensis[J]. plos one,2015.
APA	Meng Mei-Cen,Wang De-Ming,&Yao Jian-Xin.(2015).Vegetative Characters, Growth Habit and Microsporangiate Strobilus of Lycopsid Minostrobus chaohuensis.plos one.
MLA	Meng Mei-Cen,et al."Vegetative Characters, Growth Habit and Microsporangiate Strobilus of Lycopsid Minostrobus chaohuensis".plos one (2015).