Dos especies nuevas de Perymenium (Compositae-Heliantheae) de la porción árida del estado de Querétaro (México)

Acta Botanica Mexicana

Jerzy Rzedowski¹  Graciela Calderón de Rzedowski¹ 

[1] Instituto de Ecología, A.C.

关键词: Compositae;    Heliantheae;    México;    Perymenium;   

DOI  :  10.21829/abm90.2010.301

学科分类：植物学

来源: Acta Botanica Mexicana

【 摘 要 】

Perymenium arriagaeandP. sotoarenasiiare described and illustrated as new species from central Queretaro. Both are shrubs of xerophilous habitat and habit, and are known from scarce collections, in spite of the fact that the area has been fairly intensively explored. Seemingly the two species are closely related to each other, although they conspicuously differ in the leaf margin and leaf base, as well as in the size of the involucres and in the color of the pales. Given the imperfect stage of taxonomic knowledge of the genus, it is difficult to define their relationships with any of the remaining groups ofPerymenium .

【 授权许可】

CC BY-SA