Round-Leaved St John'S-Wort

hypericum nummularium

The Round-Leaved St John's-Wort is a charming perennial wildflower native to the rocky, limestone-rich slopes of southwestern Europe, particularly the Pyrenees and the western Alps. Unlike its upright, tall cousins, this species boasts a low-growing, prostrate habit. It drapes itself gracefully over sheer rock faces and crevices, forming cushions of rounded, bluish-green foliage that resemble tiny coins scattered across the stone. During the summer, these mountain gems come alive with bright yellow flowers, adding a splash of vibrant color to the stark alpine landscape.

生息地: Found in damp limestone rock crevices, mountain scree slopes, and shaded alpine cliffs.

外見

This creeping perennial typically reaches heights of only 5 to 20 cm, spreading horizontally over rocky surfaces. Its small, opposite, almost perfectly circular leaves are glaucous or bluish-green, with tiny translucent glands visible under close inspection. The star-like flowers are bright golden-yellow, measuring 1.5 to 2.5 cm across, with five distinct petals that may show tiny black dots along the margins. The center of each flower is crowded with a dense, brush-like cluster of numerous long, protruding stamens.

界Plantae門Tracheophyta綱Magnoliopsida目Malpighiales科Hypericaceae属Hypericum

Round-Leaved St John'S-Wort

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

It is a specialist of karst landscapes, perfectly adapted to survive in areas with soluble rocks where surface water quickly disappears underground.

The species name 'nummularium' is derived from the Latin word for coin ('nummulus'), referencing the beautifully round, coin-like shape of its leaves.

Unlike common St John's-wort, which grows tall and weed-like, this species behaves like a delicate mountain groundcover.

特殊能力

It possesses highly specialized, deep-reaching root systems that can wedge into tight limestone fissures to secure moisture and anchoring.

Its creeping, low-lying growth pattern helps it survive freezing alpine temperatures and high-velocity mountain winds.

The foliage contains hypericin and other secondary metabolites that act as natural deterrents against insects and mammalian grazers.

サイズと詳細

長さ: 5-20 cm
寿命: 3-10 年

食性と食事

As a photosynthetic plant, it produces its own energy using sunlight, carbon dioxide, and water while absorbing essential minerals from limestone soils.

主な食物

Sunlight
Carbon Dioxide
Water
Limestone Minerals

生態系とのつながり

mutualism

Bilberry Bumblebee

Bombus monticola

Visits the bright yellow blossoms for nectar and pollen, acting as an alpine pollinator.

eaten by

Pyrenean Chamois

Rupicapra pyrenaica

Feeds occasionally on the subalpine vegetation of the Pyrenees, including wild St John's-worts.

competitor

Earleaf Bellflower

Campanula cochleariifolia

Competes for precious space and moisture in narrow rock fissures on alpine cliffs.

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

Round-Leaved St John'S-Wortを見分けるには？

Round-Leaved St John'S-Wort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。

Round-Leaved St John'S-Wortの長さは何ですか？

5-20 cm

Round-Leaved St John'S-Wortの寿命は何ですか？

3-10 年

Round-Leaved St John'S-Wortは何を食べますか？

As a photosynthetic plant, it produces its own energy using sunlight, carbon dioxide, and water while absorbing essential minerals from limestone soils.

Round-Leaved St John'S-Wortは通常どこに生息していますか？

Found in damp limestone rock crevices, mountain scree slopes, and shaded alpine cliffs.