1、
In the daisy family the numerous bracts which subtend the inflorescence are known as an involucre.
在菊科植物中,苞片数目多而聚生在花序外围,称为总苞.
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2、
The extrafloral nectaries derived from the 4~5 layers initial cells of involucre lobes.
虎刺花外蜜腺起源于总苞裂片顶端表面的4～5层原始细胞.
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