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mucro n.(pl. -crones ) 【植、動】短尖頭;端節...

mucronate

These specimens of ruppia are characterized by possessing a small oval endocarp , smooth endocarp surface , distinct narrowly elliptic external depressions , distinct apical mucro , slightly curved seed shape and conspicuous globose hilum . a new species , r . yushensis sp . nov 該新種的主要特征為內果皮卵形、表面光滑、側面具兩個顯著的窄橢圓形凹陷、頂端具一個明顯的小尖突,以及種子頂端具顯著的球形膨大的種臍。