无花被的

Leaf margin with unicellular hairs; perianth limb white, red, or pink; anthocarp glabrous, tip sharply angular.

叶缘具单细胞的毛；花被肢白色，红，或粉红色；无毛的假果，端部锐角 3 B 。 erecta 直立黄细心

Populus has several advantages as a model system. But because of the shortcomes that the chromosome of Populus are small, dioecism, without perianth, trunk of the tree is tall, the period of infancy is 6～7 years.

杨属植物作为林业研究的模式植物，具有优良的实验特性，但是由于杨属植物的染色体小、雌雄异株、无花被、植株高大、幼年期长达6～7年等缺点，给实验研究带来许多不便。

Floral tubes smooth walled or 6-12(-14)-ribbed; ribs broad and flat or sharply ridged, without undulate wings; floral tubes glabrous or pubescent; epicalyx present or absent

花被管壁平滑或6-12(-14)棱；锐棱宽和平的或被使成脊状，没有波状的翅；花被管无毛或被短柔毛；副萼存在或无 4

Having no perianth,as the flowers of a willow.

无花被的无花被的，如柳树的花

Female flowers subsessile, ca. 0.5 mm; perianth lobes connate at base, subequal, abaxial lobe larger, subapically corniculate; staminodes 3, conspicuous, scale-like, rhombic-oblong.

近无柄的雌花，约0.5毫米；花被裂片在基部合生，近等长，背面裂片大，近顶端具小角状突起；退化雄蕊3，显眼，鳞片状，菱形长方形。

Perianth segments not connate into a tube, without an acicular appendage; axil of bractlets glabrous or ± hairy, but hairs not fascicular.

花被片并非合生成筒，没有一件针状的附加物；无毛的小苞片腋或者有毛的±，但是头发而不是束状。

Staminate flowers without perianth; stamens 1-7, inserted on receptacle; filaments slender, glabrous; anthers introrse, purple.

没有花被的雄花；雄蕊1-7，着生于花托；花丝纤细，无毛；花药向内，紫色。

Tepals glabrous or sometimes minutely papillose or pilose near base adaxially.

无毛的花被片或者有时细小小乳突或具柔毛在正面近基部。

Perianth tube glabrous, lobes 2.4--4.5 cm, appendages not papillose.

无毛的花被筒，耳垂2.4 --4.5厘米，附属物不具小乳突。

Sometimes armed with stinging hairs; epidermal cells of leaves, sometimes stems, perianths mostly with prominent cystoliths punctiform to linear; Leaves alternate or opposite, stipules present, rarely absent; leaf blade simple. Inflorescences cymose, paniculate, racemose, spicate, or cluster-capitate, usually formed from glomerules, sometimes crowded on common enlarged cuplike or discoid receptacle, rarely reduced into a single flower. Flowers unisexual, rarely bisexual in partial flowers; actinomorphic, very small,(1-)4- or 5-merous, rarely perianth absent in female flowers.

有时具有蛰毛的刺；叶的表皮细胞，有时茎和花被的表皮细胞大部分有显著的点状或线形的乳状体；叶互生或者对生，托叶有，很少无；单叶花序聚伞状，圆锥状，总状，穗状，或者丛生头状花序，花单性，部分花两性；辐射对称，小，(1-)4-或者5瓣，很少在雌花内无花被。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。