1·Leaf blade not triangular-peltate, perianth not accrescent nor fleshy in fruit.
三角形盾形的不叶片，花被不增大也非肉质在果期。
2·A commonly cultivated trailing South American plant with peltate leaves and rosy flowers.
种植普遍的南美蔓生植物，盾状叶，玫瑰色花。
3·There are 1 or 2 secretory cells in a capitate glandular hair but 8 secretory cells in a peltate glandular hair.
头状腺毛的头部只有1个或2个分泌细胞，盾状腺毛由8个分泌细胞构成头部。