anterior bract cell.
前苞片细胞

Bract margin acute serrate or spinescent, rarely entire.
苞片边缘锐尖的有锯齿或者具刺，很少全缘。

A small chafflike bract enclosing the flower of a grass.
内稃一种包住花的禾木科小穗上的苞片

Stipules persistent, often becoming a rounded, dentate bract.
托叶宿存，经常成为一圆形，有齿的苞。

Study on tissue culture from bract explant of dwarf Euphorbia pulchrrima
矮生一品红苞片外植体组织培养技术研究

Furthermore, we also confirmed the view that sepal and bract are homologous.
此外，本文也进一步证实了花萼与苞片的同源性。

Flowers hermaphroditic, with1 bract and2 bracteoles, axillary or clustered into spikes.
花两性，具1苞片和2小苞片，腋生或簇生成穗状花序的。

There was no inverted vascular bundle developed in the bract scale of Thuja occidentals.
崖柏属雌球果的苞鳞中没有倒转的维管束形成。

The results showed that stomata distributed in upper and lower epidermis of petal， bract and calyx.
结果表明，花瓣，苞片和花萼上，下表皮均有气孔分布。

It has long been believed that plant bract is one kind of metamorphism of or evolved directly from leaf.
一般认为，苞片是叶片的变态或自叶片演化而来。

The bract primordium with its axillary flower primordia is domeshaped in the beginning and then elongates.
苞片原基及其腋生的花原基最初呈圆丘状, 随后伸长。