杂草种类较多的科依次为禾本科、莎草科、菊科、玄参科、泽泻科、千屈菜科等。
The most weed species were Gramineae, Cyperaceae, Compositae, Scrophulariaceae, Alismataceae and Lythraceae.
我不知这种植物的名称，猜想它们是属于葵科或菊科？
I do not know the name of the plant, guess they are or Asteraceae Kwai?
托苞在菊科植物，如向日葵中，承托盘花的花托上的一种膜质鳞片。
The chaffy scales on the receptacle of a Flower head in a plant of the composite family, as the sunFlower.
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