长秆苔草和紧穗三棱草各龄级分株均进行有性生殖，并保持一定量的生殖分配大小，是适应生境的生殖策略权衡的结果。
Furthermore, the more or less of the reproductive allocation was certain and that is the result of reproductive trade-off and the adaptation to their habitats.
北美东部的一种植物(河苔草属金鱼藻)，长有类似于海草的橄榄绿叶子，而且生长在流速很快的河流中的岩石上。
An eastern North American plant (Podostemum ceratophyllum) having olive-green foliage resembling seaweed and growing on rocks in rapidly flowing streams.
北美东部的一种植物(河苔草属金鱼藻)，长有类似于海草的橄榄绿叶子，而且生长在流速很快的河流中的岩石上。
An eastern North American plant (Podostemum ceratophyllum) having olive-green foliage resembling seaweed and growing on rocks in rapidly flowing streams.
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