英语语法分析

Hemerocallis fulva, Parthenocissus quinquefolia, Chrysanthemum morifolium, Festuca glauca, Gaillardia aristata, Viola philippica are weaker(10<20);

萱草、五叶地锦、地被菊、蓝羊茅、天人菊、紫花地丁的耐旱性中等（10<20）；

Any of several New World plants of the genus Gaillardia in the composite family, having red or yellow florets grouped into large solitary flower heads.

天人菊，一种属新大陆菊科植物，长有大的冠状花序，由红色或黄色小花组合而成。