Italian Thistle

carduus pycnocephalus

The Italian Thistle (Carduus pycnocephalus) is a hardy, upright annual or biennial herb native to the Mediterranean region, but it has successfully spread globally, earning a reputation as a highly adaptable weed. Though often overlooked or dismissed due to its prickly defenses, this plant is a marvel of ecological resilience. It excels at colonizing disturbed soils, open pastures, and roadsides, where it can quickly establish dense stands. Its ability to thrive in poor soils and dry conditions makes it an impressive survivor, showcasing the fierce competition inherent in the plant kingdom.

生息地: Found in disturbed soils, overgrazed pastures, roadsides, and waste areas with Mediterranean-style climates.

外見

This thistle typically grows between 30 and 200 cm tall, characterized by erect, ribbed stems covered in fine woolly hairs and interrupted spiny wings. The leaves are deeply lobed and possess sharp, stiff spines along their margins, displaying a pale green hue with distinctive white veins. Its flower heads are small, cylindrical, and clustered in groups of two to five at the stem tips, featuring bright pink-to-purple disc florets. When mature, these flowers give way to feathered, wind-dispersed seeds equipped with a white, bristly pappus.

界Plantae門Tracheophyta綱Magnoliopsida目Asterales科Asteraceae属Carduus

Italian Thistle

カテゴリ

植物

レア度

Common

危険度

1/5 · 非常に低い

スナップ

最初にスナップしよう！

おもしろい事実

A single healthy Italian Thistle plant can produce up to 20,000 seeds in a single growing season, allowing it to rapidly dominate new environments.

Because it accumulates nitrates, it can occasionally be toxic to livestock like cattle and sheep if consumed in large quantities, though most animals avoid its spines.

The seeds can remain viable in the soil for up to ten years, waiting for the perfect moisture and temperature conditions to germinate.

特殊能力

Stiff spines lining the leaves and stems deter herbivores from grazing on its foliage.

The seeds feature a fluffy pappus, allowing them to travel long distances on wind currents to colonize new areas.

Deep taproots and woolly hairs on stems help reduce water loss, allowing it to thrive in arid climates.

サイズと詳細

長さ: 30-200 cm
寿命: 1-2 年

食性と食事

As a photoautotrophic plant, it produces its own food through photosynthesis, utilizing sunlight, carbon dioxide, water, and essential nutrients absorbed from the soil.

主な食物

Water
Carbon dioxide
Sunlight
Soil minerals

生態系とのつながり

eaten by

Painted Lady

Vanessa cardui

Caterpillars feed on the foliage of the thistle, using its spiny leaves for protection.

mutualism

Western Honey Bee

Apis mellifera

Forages on the flower heads for nectar and pollen, acting as a key pollinator.

parasite

Thistle Head Weevil

Rhinocyllus conicus

A weevil introduced as a biological control agent that feeds on the plant's receptacle and seeds.

特徴

このオブジェクトにはまだ特徴バッジが割り当てられていません。

別名

まだ別名はありません。

コレクション

テーマが追加されると、このオブジェクトのコレクションがここに表示されます。

安全性

危険度

1/5 · 非常に低い

まだ特別な安全上の注意はありません。

よくある質問

Italian Thistleを見分けるには？

Italian Thistleを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。

Italian Thistleの長さは何ですか？

30-200 cm

Italian Thistleの寿命は何ですか？

1-2 年

Italian Thistleは何を食べますか？

As a photoautotrophic plant, it produces its own food through photosynthesis, utilizing sunlight, carbon dioxide, water, and essential nutrients absorbed from the soil.

Italian Thistleは通常どこに生息していますか？

Found in disturbed soils, overgrazed pastures, roadsides, and waste areas with Mediterranean-style climates.