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Nectaries absent or attached to ovary base or corolla .

蜜腺无或者着生于子房基部或者花冠上。

Nectaries reduced to a naked gland patch .

蜜腺退化至一块无遮盖的腺补丁。

Nectaries surrounded by fringed or tubular appendages .

作为边缘的或管状附加物包围的蜜腺。

Nectaries not surrounded by fringes or appendages .

不被穗或者附加物包围的蜜腺。

During their research , they discovered that two helpful insects liked the extrafloral nectaries .

在研究中，他们发现了两种喜欢花外蜜腺的益虫。