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西洋蒲公英

common dandelion|セイヨウタンポポ

Taraxacum officinale · 菊科 Asteraceae

西洋蒲公英
摄影:Peter Beresford,来自 iNaturalist,公有领域 / CC0 授权。照片未经修改(仅缩放)。
颜色
黄、白
地区
日本与温带东亚
花期
春、夏
花形
单朵

识别特征

多年生草本,有通常不分枝的主根;花葶中空、无叶,通常高 5 到 40 厘米,偶尔 70 厘米,可带紫色,与叶等高或更高。叶全部基生,叶柄无翅或有窄翅,植株有白色乳汁。头状花序黄色,全部由舌状的两性小花组成,没有总苞片之外的苞片;花后变成圆球形的白色绒球,带冠毛的瘦果随风飘散,英文叫「钟」或「吹球」。多数种群靠无融合生殖结籽。

栖息环境

草坪、路边、田埂、低山草原和森林草甸,海拔 700 到 2200 米;繁殖力强,世界各地都当作野草,也作野菜和药草。

分布

原产欧亚大陆,现遍布温带各大洲;中国新疆等地有分布,东部城市草坪上的「蒲公英」多为本土的蒲公英属其他种和本种的混合;日本全境已归化(日文名「西洋蒲公英」),常比本土蒲公英更多。新加坡无。

花期

3 到 6 月盛花,温暖地区全年零星;花晴开阴闭,绒球在花后约一两周出现。

拍摄建议

以下为 FilmAnalysis 编辑的拍摄经验,不是资料来源中的内容。

黄花和白绒球是两张照片:黄花正面微距、逆光拍绒球的每根冠毛发光,背景一定要暗。绒球被吹散的瞬间用 1/2000 秒连拍,让朋友来吹。草坪上趴到地面,前景的草虚化成绿色。

适合的摄影风格

逆光的白绒球;草地上的黄点。

相似物种

本土蒲公英(Taraxacum mongolicum 等,总苞外片贴伏而不反折);苦荬菜、黄鹌菜(花葶有叶和分枝)。

相关徽章

暂无。本种还没有经过验证的照片识别,所以没有对应的徽章:图鉴里有名字不等于照片里有证据。

本页插图为 FilmAnalysis 原创绘制。照片来自 iNaturalist,授权和作者见图下说明。

收录缘由:本种来自 赏花清单(GBIF 分类骨干与维基数据核对)。名称以GBIF 分类骨干和维基数据为准,事实依据下列资料来源,照片识别暂不提供。

资料来源

Flora & Birds › Flowers

common dandelion

西洋蒲公英 · セイヨウタンポポ

Taraxacum officinale · Asteraceae

common dandelion
Photo: Peter Beresford, via iNaturalist, public domain / CC0. Unmodified apart from resizing.
Colour
yellow, white
Region
Japan and temperate East Asia
Season
spring, summer
Shape
single flower

Identification

A perennial from a usually unbranched taproot; hollow leafless flower stems typically 5–40 cm tall, occasionally 70 cm, sometimes tinted purple, held as tall as or taller than the leaves. All leaves basal, with unwinged or narrowly winged petioles; the plant has milky latex. Yellow heads of ligulate bisexual florets only, without receptacle bracts; after flowering a round white ball of silver-tufted fruits that blow away, the clock or blowball. Most lineages set seed by apomixis.

Habitat

Lawns, roadsides, field banks, low grassland and forest meadows at 700–2,200 m; a vigorous weed everywhere, also a wild vegetable and herb.

Distribution

Native to Eurasia and now on every temperate continent; in China in Xinjiang and elsewhere, the dandelions of eastern city lawns being a mixture of this and native Taraxacum species; naturalised throughout Japan (seiyō-tanpopo) and often commoner than the native ones. Absent from Singapore.

Season and behaviour

Peak bloom March to June, sporadic all year in warm places; the flowers open in sun and close in cloud, and the clocks appear a week or two after flowering.

Photography tips

These are the FilmAnalysis editors' notes, not content from the sources.

The yellow flower and the white clock are two pictures: a head-on macro for the flower, and backlight for the clock so every pappus hair glows, with a dark background essential. The moment it is blown apart needs bursts at 1/2000 s, with a friend to blow. On a lawn get down to the ground so the grass blurs green in front.

Photographic styles

Backlit white clocks; yellow dots on grass.

Similar species

Native dandelions such as Taraxacum mongolicum (outer bracts pressed up, not reflexed); sowthistles and hawksbeards (leafy, branched flower stems).

Related badge

None yet. No validated photo recognition exists for this species, so no badge is tied to it: a name in the encyclopedia is not evidence in a photograph.

The illustration is original FilmAnalysis artwork. The photograph is from iNaturalist; its licence and author are under it.

Why it is listed: this species comes from the Flower checklist (GBIF backbone and Wikidata verified). Names follow the GBIF backbone and Wikidata; the facts follow the sources below; photo recognition is not offered.

Sources