bract
美 [brækt] 
英 [brækt]
词形变化
复数：bracts
英汉解释
英英解释
例句
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。
Stem leaves short petiolate, as large as or slightly smaller than basal leaves; calyx at anthesis shorter than bract.
茎生叶短叶柄，象或稍小于基生叶一样大；花萼在花期短于苞片。
pedicel slender, pubescent, subtended by a subulate bract.
花梗纤细，青春期，通过一个钻形的苞被包着。
Inflorescences axillary or lateral, produced with young leaves, paniculate or racemose, pendent, flowers 1 per bract.
花序腋生或侧生，与幼叶一起生出，圆锥状或总状，下垂，每苞片1花。
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。
Male flowers solitary in axil of each bract, with 2-4 bracteoles or not.
雄花单生于苞片的腋内，有2-4小苞片或无。
Stipules persistent, often becoming a rounded, dentate bract.
托叶宿存，经常成为一圆形，有齿的苞。
Flowering stem extremely short, scarcely overtopping foliage, with 1 bract concealed among basal leaves, crisped glandular villous.
花茎极短，几乎不超过叶，具1苞片在基生叶，皱波状的具腺的具长柔毛中隐瞒。
Flowers spirally arranged, (1 or)3 borne in axil of a fleshy bract, appearing sunken into fleshy rachis, without bractlets, bisexual.
花螺旋状排列，（1或）3生于肉质苞片腋的，凹陷成为肉质的轴，没有小苞片，两性。
Stipules lanceolate, caducous, not becoming a bract.
托叶披针形，早落，不成为一个苞。
Fruit lens-shaped, attached to midrib of accrescent, membranous, reticulately veined floral subtending bract.
果透镜形，着生于增大，膜质，网状脉的花对着的苞片的中脉。
bract stalk not elongated in fruit, sparsely pubescent.
苞片柄在果期不拉长，疏生短柔毛。
1 bract subtending each flower, much broader than flower, free or connate into bell-shaped involucre.
1苞片在每朵花下面，比花宽得多，离生或合生成铃形的总苞的。
Bract margins with linear-lanceolate teeth, apex of teeth with capitulate glands; styles 4-lobed.
苞片边缘具线状披针形的齿，齿具头状的腺体的先端；花柱4裂。
ovule 1, borne abaxially on middle part of fertile bract, initially partly inverted, becoming more erect at maturity.
胚珠1，着生在能育的苞片的背面的中间，最初部分倒生，成熟期变得较直立。
bracts numerous, overlapping, leathery, deciduous, apex deeply 3-lobed, each bract subtending 3 flowers.
苞片多数，重叠，革质，落叶，先端3深裂，每苞片对着3花。
Seeds connate with bracts, sometimes with 2 apparent lateral wings formed from bract.
合生的种子具苞片，有时具由组成的明显侧翅苞片。
Flowers from mixed buds, scattered in basal or subbasal bract axil of young branches.
花来自混合芽的，散布在幼枝基部或近基部苞片腋；
With the development of flower, the stomatal density and stomatal index on the petal, bract and calyx increased firstly and then decreased.
随着花的发育，花瓣、苞片和花萼上的气孔密度和气孔指数一般呈现先上升后下降的变化趋势。
Inflorescences spicate, lax, to 25 cm. Flowers subsessile, solitary from bract axils.
穗状，疏松的花序，令25厘米花的是近无柄，苞片的单生。
Flowers hermaphroditic, with 1 bract and 2 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。
Involucral bract blade undivided, linear-lanceolate, 1--3 cm, villous, apex obtuse or acute.
没有分开，线状披针形的总苞片，1-3厘米，具长柔毛，先端钝或锐尖。
Flowers solitary in bract axils.
在苞片腋里的花单生。
Petiole and leaf blade reddish when young, green when mature; bract to 5 cm.
带红色的叶柄和叶片幼时，成熟时绿色；苞片到5厘米。
Bract margin entire or densely and minutely serrulate to fimbriate; pedicels spreading or slightly ascending, 1--3. 5 cm, slender.
浓密的苞片边缘全缘或和稍有细锯齿到流苏状；花梗平展或者稍微地上升，1--3.5厘米，纤细。
Scape arising from center of leaf rosette, erect, simple, with 3--30 small, bract like leaves.
花葶生于莲座丛状叶的中心，直立，单，有3-30小的，苞片状叶。
Glomerules 1-3-flowered, inserted in bract axils, forming a paniculate inflorescence at apex of dwarf branchlets.
1-3花的团伞花序，着生于苞腋，形成一圆锥状花序，在矮小小枝的先端。
Flowers axillary, 3 per bract, bisexual.
腋生的花，3每苞片，两性。
bract blade palmately parted, broadly rhombic, 1--2 cm, abaxially sparsely puberulent, margin dissected lobed.
掌状深裂的苞片，宽棱形，1-2厘米，被微柔毛的背面稀疏，边缘多裂浅裂的。
Involucral bract blade undivided or 3-lobed, obovate, 1--3 cm, margin dentate or rarely entire.
总苞片没有分开或者3浅裂，倒卵形，1-3厘米，边缘具牙齿或很少全缘。
Armed at leaf axils; bract often becoming 2 spines, rarely 1.
在叶腋具刺；苞片通常成为2刺，很少1。
