ムラサキカタバミは、夜になると花と葉が閉じます。このとき葉の半分が食べられたように見えることから「片喰」と表記されます。
Violet wood-sorrel closes its flowers and leaves at night. At this time, half of the leaves seem to have been eaten, so it is written as “Oxalis”.
【仮名】ムラサキカタバミ
【和名】紫片喰, 紫酢漿草
【英名】Violet Wood-sorrel
【学名】Oxalis debilis
【誕生】05/ 20, 10/ 01
【開花】05, 06, 07月
【花色】Violet
ムラサキカタバミ
ムラサキカタバミは外来生物
ムラサキカタバミはカタバミ科カタバミ属の植物。原産は南アメリカで、江戸時代末期に観賞用として導入されました。今では日本に広く帰化し、要注意外来生物に指定。花言葉は「心の輝き」「喜び」などです。
ムラサキカタバミの花と葉
ムラサキカタバミの花は夜になると花びらが閉じ、翌朝また開きます。ムラサキカタバミは花びらを閉じる際、葉も折りたたむように閉じます。このとき葉の半分が食べられたように見えることから「片喰」と表記されます。
ムラサキカタバミは酸っぱい
ムラサキカタバミは葉や茎にシュウ酸が含まれており、食べると酸っぱい味がするため、「酢漿草」とも表記されます。属名の「オキザリス」も酸っぱいを意味するギリシア語です。中国でも「酸味草」と表記されます。
ムラサキカタバミは木子で繁殖
ムラサキカタバミは日本では種子をつけません。鱗茎から太い牽引根を出し、鱗茎との間に木子をびっしりとつけます。ムラサキカタバミは牽引根が夏場に縮み、木子を広げていきます。この無数に生じる木子で旺盛に繁殖します。
ムラサキカタバミは難防除雑草
ムラサキカタバミは土の中の鱗茎を取り尽くすのが困難な難防除雑草です。草の丈が低く柔らかいため刈り払いも容易でありません。木子が盛んに作られる開花時期に土ごと掘り捨てたり、石灰などで土壌をアルカリ化して抑えます。
ムラサキカタバミとクローバー
ムラサキカタバミとクローバーはよく似た形の葉をつけます。どちらも三つ葉や四つ葉で這うように繁茂します。ムラサキカタバミは葉がハート型ですが、クローバーは葉が楕円型で白い模様があるので見分けられます。
Violet Wood-sorrel
Violet wood-sorrel is an alien species
Violet wood-sorrel is a plant belonging to the genus Oxalis in the family Oxalis. Originating in South America, it was introduced for ornamental purposes at the end of the Edo period. It is now widely naturalized in Japan and designated as a alien organism requiring attention. Flower language is “brilliance of the heart”, “joy” and so on.
Violet wood-sorrel flowers and leaves
The petals of violet wood-sorrel flowers close at night and reopen the next morning. When the violet wood-sorrel closes its petals, it also closes its leaves so that it folds. At this time, half of the leaves seem to have been eaten, so it is written as “Oxalis”.
Violet wood-sorrel is sour
Violet wood-sorrel contains oxalic acid in its leaves and stems and tastes sour when eaten, so it is also referred to as “vinegared wood sorrel”. The genus name “Oxalis” is also a Greek word meaning sour. It is also written as “Oxalis” in China.
Violet wood-sorrel breeds on wood sorrel
Violet wood-sorrel does not seed in Japan. A thick tow root is taken out from the bulb, and a tree is tightly attached between the bulb and the bulb. The tow root of violet wood-sorrel shrinks in the summer and spreads the tree. It breeds vigorously with these innumerable trees.
Violet wood-sorrel is a difficult-to-control weed
Violet wood-sorrel is a difficult-to-control weed that makes it difficult to remove the bulbs in the soil. It is not easy to mow because the grass is short and soft. During the flowering period when wood is actively produced, the soil is dug up, or the soil is alkalized with lime to suppress it.
Violet wood-sorrel and Clover
Violet wood-sorrel and clover have similar shaped leaves. Both grow like crawling on three or four leaves. Violet wood-sorrel has heart-shaped leaves, but clover has oval leaves and white patterns, so it can be distinguished.
