花冠筒 ( corolla tube ),花冠裂片(corolla lobe) 花萼和花冠统称为花被(perianth),当花萼和花冠形态相似不易区分时,也称为花被,如百合.
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Stamens 2, inserted at base of corolla tube, scarcely exserted.
雄蕊2，花冠筒的着生的在基部，几乎不外露。
Leaves densely hirsute especially on veins of abaxial surface. Flowers opposite. Corolla tube conspicuously puberulent annulate inside.
叶密被长硬毛背面的特别是在脉上。花对生。显著被微柔毛有环的花冠筒在里面。
The results showed that chlorogenic acid mainly distributed in the epidermis cells and the next layers cells of outer epidermis in calyx tube and corolla tube;
结果显示：绿原酸主要分布于萼筒和花冠筒的内、外表皮细胞及外表皮下的几层细胞中；
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