瓣花

The androecium were consisted of 3 stamens,two of which were connate ,separating or partial combination.

摘 要 对南瓜的两性花进行外部形态及结构的研究，结果表明：南瓜的两性花可有子房上位花、子房半下位花和子房下位花三种类型：花萼、花冠均为5，合瓣；雄蕊3，其中有两枚各由两个雄蕊合生而成，分离和部分联合，花药结构特殊，花粉发育正常；雌蕊具有单个或两个柱头及花柱。

The seeds could not be stored for a long time and the number of germination was 50% or so when seeds were cold stored . We can infer through analyzing the inheritance of some character of Gerbera jamesonii that the expression of red flower color of hybrids somewhat trended to that of female parents , plant height、flower diameter and flower doubleness had a declined tendency .

通过对杂交组合F1代的部分性状遗传变异情况分析可知：非洲菊舌状花瓣的红色具有偏母性遗传的倾向；单瓣性具有一定的遗传优势，重瓣型不具有遗传优势；杂交F1代的株高和花径呈趋小性衰减的趋势。

Near view, forsythia flowers are four flaps, each flap like a little dart.

近看，连翘花是四个瓣的，每个瓣像是一个小飞镖。

Flowers and fruit 4-merous only; disk lobes suberect, circling ovary; ovule 1 per locule; fruit axis splitting or not, free from valves when fruit dehisces; seeds only 1 per cell, hanging from top of persistent axis; raphe branch usually at base of seed

仅花和果4瓣；花盘裂片近直立，环绕的子房；胚珠1每室；果轴劈开与否，离生的裂爿结果时开裂；每室种子只1，从宿存的轴的顶悬挂；通常的种脊树枝种子的在基部， 2 Glyptopetalum 沟瓣属

Scape erect or slightly slanting, 30cm high, 1-2flowered, flowers large, white ,8-10cm across, fragrant; sepals oblong-lanceolate, 6cm long, 2cm wide, faintly tinted green at base; petals slightly smaller than sepals, lip 3-lobed, side lobes erect, spotted purple-red, mid –lobe pendent, blotched yellow and irregularly spotted purple-red in middle ,wavy at margin, lamellae yellow ,short-hairy .

花葶直立或微倾斜，高30cm ，有1~2花，花大，白色，直径8~10cm ，具芳香味；萼片长圆状披针形，长6cm ，宽2cm ，基部微带绿晕；花瓣稍小于萼片，唇瓣3裂，侧裂片直立，有紫色小斑点，中裂片下垂，中间有黄色斑块和不规则紫红色小斑点，边缘波浪状，褶片黄色，被短毛。花期2~5月。

Peduncle slender, 7-10 cm, 2 or 3 × dichotomously branched with several to many flowers; pedicel slender, 5-6 mm. Flowers 4-merous, ca. 7 mm in diam.; sepals suborbicular, short; petals whitish green or yellow-green, ovate, base cuneate.

花序梗纤细，7-10厘米，2或3次分枝具数花到多花；花梗纤细，5-6毫米花4瓣，直径约7毫米；萼片近圆形，短；花瓣带白色绿色的或黄绿色，卵形，基部楔形。

Cyclamen (scientific name: Cyclamen persicum), Begonia other Mingluo Bo, the rabbit flower, rabbit flower, a Victor, bonfire flower, lotus flap is Myrsinaceae Cyclamen is a perennial herb.

仙客来（学名：Cyclamen persicum），别名萝卜海棠、兔耳花、兔子花、一品冠、篝火花、翻瓣莲，是紫金牛科仙客来属多年生草本植物。

Perennial of the eastern United States having early solitary yellow flowers followed by late petalless flowers; so-called because ice crystals form on it during first frosts.

美国东部的多年生植物，先开单生的黄色花、继而是无瓣的花；在第一次霜冻时有冰晶结在花上。

Scape usually longer than leaves, with 2-3 flowers each with 1bract, floral bract hooded, broad-ovate, as long as ovary, blunt and usually 3-lobed at apex; flower green-yellow, dorsal sepal white with yellow-green veins and green base, elliptic, 4-4.5cm long, short-pointed at apex, keeled on back, pubescent at base inside, petals very long, pendulous, twist, linear, 8.5-12cm long,6mm wide in middle; lip reversed helmet-shaped, longer than dorsal sepal, with claw almost as long as hood, side lobes inflexed, auricles large and nearly broad-triangular; staminode obcordate; stamens with thick and short filaments; ovary rostrate, 5.5cm long, glabrous.

花茎常长于叶，具2~3朵花，每花具一枚苞片，花苞片兜状，宽卵形，和子房等长，顶端钝而常3浅裂；花绿黄色，重萼片白色而有黄绿色的脉和绿色的基部，椭圆形，长4~5.5cm ，短尖，背面具龙骨状突起，基部内侧被短柔毛；花瓣极长，悬垂，扭曲，条形，长8.2~12cm ，中部宽约6mm ；唇瓣倒盔状较中萼片长，具爪，爪几乎和兜等长，具内折侧裂片，耳大而近阔三角形；退化雄蕊倒心形，上面基部具一个角状突起；雄蕊具短粗的花丝；子房具喙，长约5.5cm ，无毛。

Flowers 5-merous; internodes of inflorescence shorter than flowers, sometimes elongating after anthesis and then slightly longer than fruits

花5瓣；开花短于花，有时花后伸长和稍微长于水果节间 1 Mitreola 度量草属

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

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