张氏红山茶Camellia changiiYe是一年多次开花的植物,它具有全缘、倒卵形的叶,其异面叶具有异型结构的特点：叶的上表皮由1层偶见2层......

<div style="text-align:justify;"> The ellipse and the superellipse are both planar closed curves with a double axis of s......