Intraspecific Variation in Samara Morphology of Acer and Its Implication in Fossil Identification

doi:10.7677/ynzwyj201313073

Abstract

Abstract:

Samara morphology of 8 species of Acer (Aceraceae), which occur in southwestern China, was observed from the herbarium specimens. Morphological comparisons and examinations based on PCO analysis display considerable intraspecific variations in samara morphology, mainly in general shape and fruit size. Samaras belonging to the same species but collected from different places have morphological disparities, which might be associated with different climatic and environmental conditions. This represents the first detailed investigation of the intraspecific variation in Acer samara morphology, and throws light on the identification of fossil samaras of Acer at the specific level. Interaspecific variation in samara morphology should be taken into consider in taxonomical studies of samara fossils of Acer. Fossils with morphological diversity might belong to only one or fewer fossil taxa.

Key words: Aceraceae, Acer, Samara, Fossil, Intraspecific morphological variation

CLC Number:

Q 944

HUANG Yong-Jiang-, ZHU Hai-, CHEN Wen-Yun-, ZHOU Zhe-Kun. Intraspecific Variation in Samara Morphology of Acer and Its Implication in Fossil Identification[J]. Plant Diversity, 2013, 35(3): 295-302.

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