Intraspecific Variation in Samara Morphology of Acer and Its Implication in Fossil Identification
HUANG Yong-Jiang-, ZHU Hai-, CHEN Wen-Yun-, ZHOU Zhe-Kun
Plant Diversity . 2013, (3): 295 -302 .  DOI: 10.7677/ynzwyj201313073