%0 Journal Article %A LI Xiao-Dong %A LIU Bao-Dong* %A SUN Hao %A ZHANG Da-Wei %T New Observation of Megaspore Morphological Characteristics in Isoetes yunguiensis %D 2013 %R 10.7525/j.issn.1673-5102.2013.03.004 %J Bulletin of Botanical Research %P 271-273 %V 33 %N 3 %X New megaspore morphological characteristics of the protected plant—Isoetes yunguiensis were observed using scanning electron microscope (SEM). The result indicates: globular granule on megaspore surface; inapparent reticulate ornamentation; inapparent reticulate ornamentation with big size. Megaspore of the old ligulate heterosporophyte are easy to significantly change in size, ornamentaion and fissure. %U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2013.03.004