英语语法分析

Basal leaf blade oblong, base not cordate.

基生叶长圆形，基部不心形。

In this article the origination and evolution of genera Houttuynia cordate is discussed as well.

本文中还讨论了蕺菜属植物的起源演化。

Leaf blade usually oblong to ovate, cordate or nearly so at base; leaf and fruit without pubescence.

叶片通常长圆形到卵形，心形的或近如此在基部；叶和果没有短柔毛。