1. The primitive exarch and diarch haplostele with cross-like metaxylem exists in the lower part of CNZ.
在子叶节区下部存在原始的外始式二原型十字形单中柱。
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2. Adonis amurensis is perennial herb, Its roots are nearly primary structure in the whole life, Primary Xylems of main root and lateral roots of one year seedling are diarch.
冰凉花属于宿根植物，其根几乎终生为初生结构。一年生苗直根系的主根和侧根的初生木质部均为二原型。
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3. Adonis amurensis is perennial herb, Its roots are nearly primary structure in the whole life, Primary Xylems of main root and lateral roots of one year seedling are diarch.
