单词bract
n.: 【植】苞；苞片
网络: 苞叶；苞鳞；苞片状
【植物;植物学】苞,托叶;苞片
苞鳞
复数：bracts
The bract primordium with its axillary flower primordia is dome-shaped 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。
Scape simple, erect, usually with a few small, bract like leaves.
花葶单一，直立，通常具一些小的，苞片状叶。
Stipules lanceolate, ca. 4 mm, membranous, densely covered with short brown pubescence, glabrescent , basal ones bract like and persistent.
托叶披针形，约4毫米，膜，密被短的棕色的有毛，后脱落，基生者苞片状和持久。
Bract base decurrent; bractlet margin membranous laterally, but apex herbaceous, acute; anther appendage apex pungent.
苞片基部下延；小苞片侧面边缘膜质的，但是顶草质，锐尖；花药附属物先端锐尖。
We previously reported that SUPERNUMERARY BRACT (SNB) regulates the transition of spikelet meristems into floral meristems in rice.
我们之前已经报道过SNB（多颖壳）基因，它调控着水稻小穗分生组织向花分生组织的转变。
bract absent. Flowers bisexual, usually nodding at anthesis, ascending in fruit, spreading funnelform.
苞片无花两性，通常有节的在花期，在果期上升，平展漏斗状。
Bract base not decurrent; bractlet margin membranous throughout, apex obtuse; anther appendage apex obtuse.
苞片基部不下延；边缘膜质的小苞片全部，先端钝；花药附属物先端钝。
Bract keeled; bracteoles distinct; inflorescences of spikes, flowers sunken into rachis.
苞片龙骨状；小苞片清楚；穗状花序的花序，花凹陷的成为轴。
Stomatal density and stomatal index on upper epidermis of petal, bract and calyx were smaller than those on lower surface.
花瓣、苞片和花萼上表皮的气孔密度和气孔指数均小于下表皮的。
involucral bract leaflike; heads many, hemispheric, many flowered.
总苞片叶状头状花序很多，半球形，多花的。