花鸟图鉴 › 花卉

捕蝇草

Venus flytrap|ハエトリグサ

Dionaea muscipula · 茅膏菜科 Droseraceae

捕蝇草
摄影:Len Worthington,来自 Wikimedia Commons,以 CC BY-SA 2.0 授权。照片未经修改(仅缩放)。
颜色
白、绿、红
地区
其他地区(东亚仅见于鸟园或植物园)
花期
春、夏
花形
花簇
IUCN 等级
易危 (VU)

识别特征

小型食虫植物,4 到 7 枚叶从一个短的球茎状地下茎长成莲座,每枚叶最长 3 到 10 厘米,花后长出带大夹子的长叶。叶末端是两瓣铰合的捕虫夹,边缘有规则的刺毛(像「维纳斯的睫毛」),内面常红色;昆虫连续触动夹内的感觉毛,夹子在零点几秒内合上,这是植物界最快的运动之一,中日文别名「苍蝇的地狱」。花白色,五瓣,小,生在高出夹子的花葶上,以免吃掉传粉者。是捕蝇草属唯一的种,与貉藻和茅膏菜同科。IUCN 评为易危。

栖息环境

原产地贫氮贫磷的沼泽、湿草原和湿沙地,依赖周期性火烧抑制竞争者;世界各地作盆栽,靠水苔和纯水栽培。

分布

仅原产美国北卡罗来纳和南卡罗来纳海岸平原方圆百余公里;东亚全部是栽培:中国的花市和食虫植物爱好者常见,日本的园艺店常见(日文名「ハエトリソウ」),新加坡的花市也有。野外采集是非法的。

花期

花 5 到 6 月;捕虫夹春到秋最大最红,冬季休眠变小。

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。

夹子是题材:微距正面拍张开的夹子、刺毛和红色的内面,逆光让刺毛发光;合上的过程用视频,别为了拍照反复触发(夹子只能开合几次就会死)。花小而白,在夹子上方,拍整株。全部是栽培株,别去野外找。

适合的摄影风格

张开的红夹子微距;逆光发光的刺毛。

相似物种

茅膏菜(叶上有黏液腺毛,不会夹);猪笼草(捕虫笼);貉藻(水生、微型夹子)。

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。照片来自维基共享资源,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

Venus flytrap

捕蝇草 · ハエトリグサ

Dionaea muscipula · Droseraceae

Venus flytrap
Photo: Len Worthington, via Wikimedia Commons, licensed CC BY-SA 2.0. Unmodified apart from resizing.
Colour
white, green, red
Region
Elsewhere (in East Asia only in bird parks or botanic gardens)
Season
spring, summer
Shape
cluster
IUCN status
Vulnerable

Identification

A small carnivorous plant, a rosette of four to seven leaves from a short bulb-like underground stem, each stem 3–10 cm at most, longer leaves with robust traps after flowering. Each leaf ends in a two-lobed hinged trap with regular marginal bristles (the lashes of Venus), often red within; when an insect touches the trigger hairs in succession the trap snaps shut in a fraction of a second, among the fastest movements in the plant kingdom, hence the Chinese and Japanese nickname hell for flies. Small white five-petalled flowers on a tall scape held well above the traps so pollinators are not eaten. The only species of its genus, related to the waterwheel plant and the sundews. Assessed Vulnerable by the IUCN.

Habitat

Nitrogen- and phosphorus-poor bogs, wet savannahs and wet sand at home, depending on periodic fire to suppress competitors; a pot plant worldwide in sphagnum and pure water.

Distribution

Native only to a stretch of coastal plain in North and South Carolina in the United States; entirely cultivated in East Asia, common in Chinese flower markets and among carnivorous-plant growers, in Japanese garden centres (haetorisō), in Singapore's flower markets too. Wild collection is illegal.

Season and behaviour

Flowers in May and June; traps largest and reddest from spring to autumn, dormant and small in winter.

Photography tips

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

The trap is the subject: a head-on macro of an open trap, its bristles and red interior, with backlight making the bristles glow; film the closing on video rather than triggering it repeatedly for stills (a trap dies after a few closures). The small white flowers stand above the traps, so frame the whole plant. All cultivated plants; do not go looking in the wild.

Photographic styles

Macro of an open red trap; bristles glowing against the light.

Similar species

Sundews (sticky glandular hairs, no snapping); pitcher plants (pitfall traps); waterwheel plant (aquatic, tiny traps).

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 Wikimedia Commons; 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