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叶状植物

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Leaf epidermis of 35 species of Ormosia in China was examined under light microscope andscanning electron microscope. The epidermal cells of both upper and lower leaf surfaces are polygonal or irregular in shape, anticlinal walls are straight, arched, sinuolate or sinuate, and stomata are elliptic or ovate.

用光学显微镜和扫描电子显微镜观察了红豆属35种的叶表皮形态,这些植物的叶上下表皮细胞为不规则形或多边形,垂周壁有平直、弓形、浅波状或深波状,表皮细胞形状和垂周壁在种间有一些差异。

Microspore Ye as the feather, small sporophyll sac formed by the polymerization, each polymer capsules formed by four small sporangia, small spores with dual airbags, and airbag Pinaceae pollen is similar to large sporophyll from the central axis and arranged in Brachypodium feather composition, Each Yibing has a shell bucket, each bucket containing shell upright ovules 10-12 months.

小孢子叶枝为羽状,小孢子叶由聚合囊组成,每个聚合囊由4个小孢子囊组成,小孢子具双气囊,与松科植物花粉的气囊相似,大孢子叶由中轴及羽状排列的短柄组成,每一柄上有一个壳斗,每个壳斗内有10—12个直立的胚珠。

Any of several plants of the genus Brodiaea having basal grasslike leaves and globose flower heads on leafless stems resembling those of genus Allium.

卜若地属几种植物中的任何一种,具基生草状叶,在类似葱属植物的无叶的茎干上长有球形的头状花序。

Unusual hydrangeas, exotic clematis-type vines covered with white starlike flowers, and bushes spotted with heart-shaped leaves and lilylike flowers bloomed everywhere.

独特的绣球花属植物,上面开着白色星状花朵的奇异的铁线莲形蔓藤类植物,以及长满心形叶和开满百合花状花朵的灌木处处可见。

An observation and analysis of series of characteristics coming from sixteen species belonging to five genera of Polypodiaceae subfam.Polypodioideae were undertaken in order to unravel the phylogenetic relationships within this group.

对水龙骨科水龙骨亚科5属16种植物的孢子形态、叶表皮结构、叶柄和根状茎的横切、根状茎上的鳞片以及叶脉特征进行了详细的观察和分析,探讨了该亚科植物的系统位置和亲缘关系。

The results of observation on the microstructure of Karelinia caspica, Tamarix stromongolica, Salsola collina. Cheno Dodium glaucum, stipa bangenana show that the nutritional organs of these halophytes present some adaptability structures as follows:(1) sunken stomas, thick cuticle and orderly arrangement of epidermal cell;(2) equilateral leaves with developed palisade tissue, or squama-shaped leaf;(3) well-developed water-storing tissue in stems and leaves;(4) crystal cells, salt glands in most of the leaves and assimilating branches.

通过对花花柴、甘蒙怪柳、猪毛菜、灰绿藜、长芒草五种盐生植物显微结构观察,这五种盐生植物营养器官的形态结构均呈现一定的适应性特征:(1)气孔器下陷,角质层加厚,表皮细胞排列紧密而整齐;(2)多为等面叶,叶片栅栏组织发达,或退化为鳞片状,而具同化枝;(3)茎、叶多为肉质化,贮水组织发达;(4)具有含晶细胞,枝叶具盐腺。

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。

Shrubs, usually aerial hemiparasites on other seed plants, often spreading along host by runners, more rarely terrestrial root-parasitic shrubs or trees, nodes not articulated, glabrous or hairy, hairs often stellate or verticillate. Leaves opposite or alternate, stipules absent; petiole often indistinct; leaf blade simple, usually pinnately veined, margin entire.

灌木,通常半寄生在其它种子植物的树上,通过匍匐茎在寄主身上延伸,很少为根寄生的地生灌木或乔木,节没有关节,无毛或有毛,通常为星状毛或具毛轮,对生叶或交替,托叶无;叶柄不明显;单叶,通常羽状脉,边缘全缘。

A tropical American plant having large, thick, sword-shaped leaves that yield a coarse reddish fiber used in making rope and twine.

剑麻,黑纳金树产于美洲热带地区的植物。其叶大、厚,呈剑状,淡红色的叶纤维粗状,可制粗绳和麻绳

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