萼片

Flowers bisexual or unisexual, rarely polygamous, actinomorphic or zygomorphic, solitary or in axillary or terminal, spicate, paniculate, or racemose inflorescences, 2-bracteolate, sometimes cleistogamous. Sepals 5, equal or unequal, imbricate, persistent.

花两性或单性，很少杂性，辐射对称或左右对称，单生或为腋生或顶生的穗状花序、圆锥花序或总状花序，有两个小苞片，萼片5，相等或者不相等，覆瓦状的，宿存。

Annuals, if perennial then uppermost leaves filiform to narrowly linear; sepals not cucullate; flowers ebracteate.

一年生草本，如果多年生植物那时最上叶丝状到狭线形；萼片不兜状；花无苞片。

Sepals 8--12, spreading, 12--25 mm, glabrous; cyme 1-flowered; involucral bract petiole 1--5 mm wide.

萼片8-12，平展，12-毫米，无毛；聚伞花序1花；总苞片叶柄1 --5毫米宽。

Sepals 5--7, bent, 5--7 mm, puberulent; cyme few flowered; involucral bract petiole 1--2 mm wide

萼片5-7，弯曲，5-7毫米，被微柔毛；聚伞花序少数开花；总苞片叶柄1 --2毫米宽 15 A。

Bracteoles and sepals outside velutinous, inside glabrous; ovary tomentose; capsule pericarp furfuraceous.

天鹅绒似的小苞片和萼片外面，里面无毛；子房被绒毛；蒴果果皮软鳞片状。

Sepals [3 or](4 or)5(-9), imbricate, with bracts beneath.

萼片 [3或者 ](4或)5(-9)，覆瓦状，具苞片在下面。

Although absent in most species, nectar may be produced in a spur (8) of the labellum, on the point of the sepals or in the septa of the ovary, the most typical position amongst the Asparagales.

虽然在大多数的物种中不存在，但花蜜可在唇瓣的距（片或花瓣、花萼或花冠上的、细小的、囊状、中空的附属结构。）中产出，在萼片的尖端或者在子房室之间的隔上，在天门冬目的植物里面所处位置最特别。

Leaves entire; bracts navicular; outer sepals elliptic-spatulate, apex obtuse; corolla salverform, pink or purple

叶全缘；苞片舟形；外部萼片匙形椭圆形，先端钝；花冠高脚碟状，粉红色的或紫色 10 Ipomoea pileata 帽苞薯藤

Most of them have numerous sepals, and change form from outside to inside, from bracts to petals.

他们大多有许多萼片，改变从外到内的形式，由苞片的花瓣。

Leaf blade glabrous or sparsely pubescent; sepals 4 or 5, without equal bracts

叶片无毛或疏生短柔毛；萼片4或5，无可比拟苞片 19

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。