Stem morphology and anatomy in Amaranthus L. (Amaranthaceae) -: Taxonomic significance

被引：62

作者：

Costea, M ^{[1
]}

DeMason, DA

机构：

[1] Univ Calif Riverside, Riverside, CA 92521 USA

[2] Univ Agron Sci, Dept Bot, Bucharest, Romania

来源：

JOURNAL OF THE TORREY BOTANICAL SOCIETY | 2001年 / 128卷 / 03期

关键词：

Amaranthus; stem; morphology; anatomy; trichomes; primary vascular system; secondary growth; taxonomy;

D O I：

10.2307/3088717

中图分类号：

Q94 [植物学];

学科分类号：

071001 [植物学];

摘要：

The range of variation within the genus Amaranthus L. (Amaranthaceae) is described for a number of stem characters including: morphology, epidermis, primary stem vasculature and mechanism of secondary growth. The results provide new characters (phyllotaxy, complexity of leaf vascular supply and relative amount of secondary growth) that support (1) a new infrageneric classification (subgenus Amaranthus vs subgenus Albersia (Kunth)Gren. & Dodr.). and (2) the separation within the "hybridus" complex of cultivated amaranths (A. caudatus L., A. cruentus L. and A. hypochondriacus L.) from their presumed wild ancestors (A. hybridus L. subsp. quitensis (Kunth) Costea & Carretero. A. hybridus L. subsp. hybridus and A. powellii S. Wats. subsp. powellii respectively).

引用

页码：254 / 281

页数：28

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