无生的

Leaves opposite, sessile or petiolate; interpetiolar stipules well developed to reduced to a transverse ridge.

叶对生，无柄或具叶柄；叶柄间的托叶发育良好到一根横梁成脊状的退化至。

Bidens pilosa var. radiata, one of the rapid expanding invasive weeds, has become prevailing throughout Taiwan. A study on the result enhanced by the breakdown of geographic isolation with the native varieties in genetic variation, population structure and introgressive hybrization is really in need. In this study the genetic variation and population structure among the varieties of Bidens pilosa complex were studied using ISSR markers.

在台湾Bidens pilosa种群在外部形态及分布上均非常类似，加上大花咸丰草又属极具侵略性的新归化种，在与其他自生变种又无明显隔离下，是否增加种间之交流与渐渗杂交之机会及对族群结构的影响，实有深入探讨之必要。

Fruit linear siliques, strongly latiseptate, sessile; valves with an obscure midvein, smooth, longitudinally striate; replum rounded; septum complete, membranous, with a distinct midvein; style slender, to 1 mm; stigma capitate, entire.

果线形的长角果，强烈具宽隔膜，无梗；裂爿具不明显中脉，滤波，纵向具条纹；假隔膜绕行；完全的隔膜，膜质，具一离生中脉；花柱纤细，对1毫米；柱头头状，全缘。

Inflorescences terminal thyrses, densely yellow-brown pubescent, cymes sometimes monochasial; bracts sessile, ovate to broadly ovate, 1.5-4.5 0.5-1.8 cm, pubescent; bractlets lanceolate to ovate.

有时的花序顶生聚伞圆锥花序，浓密黄褐色短柔毛，聚伞花序单歧聚伞状；苞片无梗，卵形到宽卵形， 1.5-4.5 0.5-1.8 厘米，短柔毛；小苞片披针形的到卵形。

Flowers yellowish to greenish, rarely brightly colored, small, bisexual or unisexual, rarely polygamous,(4 or)5-merous, hypogynous to epigynous, in mostly axillary, sessile or pedunculate cymes, or reduced to few in fascicles. Calyx tube patelliform or hemispherical to tubular, sometimes absent, at rim with calyx, corolla, and stamens; sepals 4 or 5, valvate in bud, triangular, erect or ± recurved during anthesis, adaxially often distinctly keeled, alternate with petals.

对带绿色淡黄的花，很少明亮染色，单性，很少杂性的小，两性或，(4或)5瓣，萼筒小盘状或者半球形到管状，有时无，在凸缘有花萼，花冠和雄蕊；萼片4或5，芽期镊合状，三角形，直立或者在花期弯曲，正面通常显著凸起，与花瓣互生。

Flowers short pedicellate or sessile, in racemes, spikes, or heads, sometimes solitary in axils of apical leaves.

花短有花梗或无梗，在总状花序，穗状花序，或头状花序，顶端的叶的有时单生在腋处里。

Staminodes 3 or rarely absent, alternate with petals, often clawed, 2-cleft or 2-brachiate and branches with penicillate hairs.

退化雄蕊3或很少无的，与花瓣互生，通常具瓣爪，2半裂或者2具臂和分支有具毛撮毛的。

Leaves opposite, petiolate or upper ones sessile.

叶对生，具叶柄的或上部的无梗。

Leaves alternate, simple, pinnately veined, entire to irregularly serrate or lobed, rarely pinnatifid; stipules absent or rarely present.

叶互生，单叶，羽状脉，全缘、有不规则的有锯齿或者浅浅裂，很少羽状分裂；存在的无托叶或很少。

Male flowers yellow, 3 per bract, pedicellate; calyx membranous, cup-shaped, 3-lobed; stamens 3; filaments free; anthers 2-celled, longitudinally dehiscent; pistillode absent.

比男性，每苞片1，有花梗大的雌花；花萼杯状，3 分裂；子房3室，平滑；每室1胚珠；通常的花柱3，离生；柱头外卷，全缘，无腺体。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。