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Leaves basal and on stem, opposite, rarely in whorls of 3, lanceolate to ovate, pinnatifid to pinnatisect.

叶基生和在茎上,对生,很少3轮生,披针形的到卵形,对羽状全裂羽状半裂。

Petals yellow; flowers ca. 7 mm; middle outer sepal and apical appendage of keel pocketlike; stems without leaf scars and lenticels; leaf blade membranous, elliptic-lanceolate, ca.

花瓣黄色花约7毫米;中间外部萼片和龙骨瓣顶端附属物口袋状;没有叶痕和皮孔的茎;叶片膜质,椭圆状披针形,约3厘米宽,先端渐尖。

Male inflorescences spicate or scorpioid cymose; female inflorescences usually 2-8-flowered 1-flowered in S .

匍匐茎节不加厚;叶在上部的茎和分枝,肉质的,干燥时的厚纸质,椭圆状披针形, 1.5-4 * 0.5-1 厘米,侧脉4-6 每边。

Secondly, according to the stem and leaf anatomy, leaf epidermis, pollen morphology and floral development, it is found that there are no close relations between Acorus and Typhales, especially in the aspect of floral development. In the course of floral development of A. calamus, neither bracteloe primordium nor common primordium occurs in the whole course. Early development of the flower is strongly unidirectional. Three shield carpels develop into a pistil. In Sparganium fallax, each female flower has a bracteole. The bracteole primordium and the floral primordium originate from a complex structure. A single saccate carpel develops into a pistil. In staminate flowers, petal and stamen primordia initiate spirally.

菖蒲属与香蒲目的茎叶解剖特征、叶表皮特征、花粉特征及花器官发生特点等亦存在着明显区别,特别是花器官发生特点差异尤为显著,如菖蒲属花器官发生过程中,没有苞片原基,也不存在任何形式的复合原基,花被与雄蕊原基均以单向性方式发生,雌蕊由3心皮发育而成,具有&盾状心皮&的特点等,黑三棱属则有苞片原基发生,且苞片原基与雌花原基起源于共同的复合结构,雄花的花被原基和雄蕊原基均以螺旋状方式发生,雌蕊由单心皮发育而成,未发现有2或3个心皮原基或其痕迹的现象,体现出&囊状心皮&的特点。

Plant stoloniferous, rhizomes absent; panicle contracted after anthesis.

有匍匐茎的植株,无的根状茎;圆锥花序收缩的在花后。

Result:The stomatic density and characteristic of leaf epidermis and stem epidermis in six Ephedra species was differenc,there were no ob...

结果:6种麻黄属植物之间气孔密度、茎、叶表面特征存在不同程度的差异;气孔表现出典型旱生植物的特征,略下陷,气孔保卫细胞被厚的角质层覆盖,并形成突起状角质唇状物;气孔大小、形状在种之间无明显区别;叶表面、茎表面气孔均属于无规则型,但形状明显不同,前者主要呈长方形或六边形,后者为窄条形或哑铃形。

Result:The stomatic density and characteristic of leaf epidermis and stem epidermis in six Ephedra species was differenc,there were no obvious morphological differences in stoma shape and size.

结果:6种麻黄属植物之间气孔密度、茎、叶表面特征存在不同程度的差异;气孔表现出典型旱生植物的特征,略下陷,气孔保卫细胞被厚的角质层覆盖,并形成突起状角质唇状物;气孔大小、形状在种之间无明显区别;叶表面、茎表面气孔均属于无规则型,但形状明显不同,前者主要呈长方形或六边形,后者为窄条形或哑铃形。

After histochemistry determination, it shows that dioscin take the form of liquid drop and exists mainly in the cells of parenchyma of ground tissue.

经组织化学测定,根状茎中薯蓣皂甙主要存在于基本组织的薄壁细胞中,呈液滴状。

Umbels compound, terminal on stem and branches; bracts absent; umbellules many-flowered, capitate; bracteoles several, lanceolate or ovate lanceolate, entire; pedicels obsolete.

复伞状花序,在茎和分枝上顶生;苞片无小伞形花序多花的,头状;小苞片数个,披针形或卵状披针形,全缘;花梗过时。

Rhizomes swollen, tuberlike; spathes 2-flowered; flowering stems to 35 cm; flowers ca.

使膨胀的根状茎,管状;佛焰苞2花;花茎到35厘米;花约6厘米直径 51 IRIS leptophylla 薄叶鸢尾

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。