The haustrum structure of the two were similar and both were composed of parenchyma and spiral vessel.
北桑寄生叶较薄，叶脉发达，无栅栏组织和海绵组织的分化。
The haustrum structure of the two were similar and both were composed of parenchyma and spiral vessel.
北桑寄生叶较薄，叶脉发达，无栅栏组织和海绵组织的分化。
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