花被的

Any of various thistle s of the genus Centaurea,having variously colored flowers grouped in a head with a spiny involucre.

黑矢车菊一种属于矢车菊属的蓟属植物，其花有多种颜色，聚集在有刺状花被的头状花序里

Any of various thistles of the genus Centaurea,having variously colored flowers grouped in a head with a spiny involucre.

黑矢车菊一种属于矢车菊属的蓟属植物，其花有多种颜色，聚集在有刺状花被的头状花序里

Having no perianth,as the flowers of a willow.

无花被的无花被的，如柳树的花

Five tepal primordia arise in a 2/5 sequence on the periphery of the floral apex.

在同一个种不同的花蕾中，花被的发生有两种顺序：逆时针方向和顺时针方向。

Nectaries of inner tepals papillose or with fimbriate projections on both surfaces.

内轮花被的蜜腺具小乳突或者用流苏状突起在两面。

Nectaries of inner tepals with fimbriate projections on both surfaces; flowers nodding or horizontal.

有流苏状突起在两面的内轮花被的蜜腺；花下垂或水平。

Nectaries of inner tepals neither papillose nor with fimbriate projections.

内轮花被的蜜腺既不具小乳突也不用流苏状突起。

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。

Nectaries of inner tepals papillose on both surfaces; flowers erect.

内轮花被的蜜腺具小乳突的在两面；花直立。

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。