cedar elm (Ulmus crassifolia Nutt.)

Seven compounds (Ⅰ, Ⅱ, Ⅲ, Ⅳ,Ⅴ,Ⅵ,Ⅶ) were isolated from the extract of 80% aqueous ethanol of the roots of Sanguisorba officinalic L.

从狭叶地榆根中分离出7种化合物,经化学和光谱方法鉴定分别为2,4-二羟基-6-甲氧基苯乙酮(Ⅰ)、3,3′,4-三(○-甲基)逆没食子酸(Ⅱ)、3,4′,4-三(○-甲基)逆没食子酸(Ⅲ)、地榆皂甙元(Ⅳ)、地榆皂甙Ⅰ(Ⅴ)、地榆皂甙Ⅱ(Ⅵ)和胡萝卜甙(Ⅶ),其中Ⅰ为首次从天然界中得到,Ⅲ为一新化合物。

Effects of Sucrose,Boron and Calcium on in Vitro Pollen Germination and Pollen Tube Growth of Prunus triloba Lindl;

蔗糖、钙和硼对榆叶梅花粉离体萌发及花粉管生长的影响

Hoarding Anther Dust of Prunus triloba Lindl.and the Determination of Its Viability;

榆叶梅花粉贮藏及生活力的测定

Chemical Control of Japanese elm sawfly with Different Insecticide under Different Concentration

几种农药不同浓度防治榆叶蜂试验初报

Physiological Response of the Leaves of Wild Flower Sanguisorba offiicinalis L.to Simulated Acid Rain

野生花卉地榆叶片对模拟酸雨的生理响应

Study on Comparing of Photosynthetic Characteristics and Freezing Resistance of Ulmus Pumila Cv.Jinye and Ulmus Pumila

金叶榆、家榆光合特性及抗寒性的比较研究

An elm be a type of large tall broad - leave tree

榆树是一种高大的阔叶树

Deciduous tree style such as maple, oak, elm, walnut, etc.

落叶类树包括枫、橡木、榆树、胡桃等等。

An elm is a type of large tall broad-leaved tree.

榆树是一种高大的阔叶树。

Some Relationships Between Leaf structure and Resistance to Insects of Elms

榆属树种的叶子结构与抗虫性的关系

Yeyu,Bozi and Other Things in Zhuzhici;

竹枝词中的“叶榆”、“僰子”及其他

type genus of family Ulmaceae; deciduous trees having simple serrate leaves; widely distributed in temperate regions.

榆科的模式属；歪形单叶的每年落叶的乔木。

a dicot family of the order Urticales including: genera Ulmus; Celtis; Planera; Trema.

苜蓿目中的双子叶植物科包括；榆树属；朴属；水榆属；山黄麻属。

Study on the Resistance of Siberian Elm Clone 65212 to Beetle

白榆优良无性系65212对榆毛胸萤叶甲的抗虫性研究

The wood structre of evergreen Elm has been observed. The results show: there were greater differences in wood structure between evergreen Elm and deciduous Elm.

通过对常绿榆木材构造的观察，结果表明常绿榆木材构造与落叶榆木材构造有较大差异。

A New Species of Leafhopper Injurious to Ulmus pumila (Hemiptera:Cicadellidae:Euscelinae)

为害白榆的叶蝉1新种(半翅目:叶蝉科:殃叶蝉亚科)

The elm trees before Court Leys were beginning to burst into leaf.

莱伊府第房子前面的榆树开始长出嫩叶。

a variety of the English elm with erect branches and broader leaves.

各种各样的英格兰榆树，树枝挺直，叶面宽阔。

Deciduous tree style such as maple, oak, elm, ash, pear, etc.

落叶类树包括枫、橡木、榆树、槐木、梨树等等。

European elm with lustrous smooth leaves used as an ornamental.

欧洲榆，有光亮、平滑的叶片，用作观赏植物。

Deciduous tree style such as maple, oak, elm, dogwood, redbud, etc.

落叶类树包括枫、橡木、榆树、茱萸、紫荆等等。