Round-Leaved St John'S-Wort
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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.
Hábitat: Found in damp limestone rock crevices, mountain scree slopes, and shaded alpine cliffs.
Aspecto
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.
ReinoPlantaeFiloTracheophytaClaseMagnoliopsidaOrdenMalpighialesFamiliaHypericaceaeGéneroHypericum
Categoría
PlantasRareza
Common
Peligro
1/5 · Muy bajo
Snaps
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Datos interesantes
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.
Habilidades especiales
Habilidad
Calciphilic Crevice Anchor
It possesses highly specialized, deep-reaching root systems that can wedge into tight limestone fissures to secure moisture and anchoring.
Habilidad
Prostrate Low-Profile
Its creeping, low-lying growth pattern helps it survive freezing alpine temperatures and high-velocity mountain winds.
Habilidad
Chemical Herbivore Defense
The foliage contains hypericin and other secondary metabolites that act as natural deterrents against insects and mammalian grazers.
Medidas y detalles
- Longitud
- 5-20 cm
- Esperanza de vida
- 3-10 años
Dieta y alimentación
As a photosynthetic plant, it produces its own energy using sunlight, carbon dioxide, and water while absorbing essential minerals from limestone soils.
Alimentos principales
- Sunlight
- Carbon Dioxide
- Water
- Limestone Minerals
Conexiones ecológicas
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.
Rasgos
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También conocido como
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Seguridad
Peligro
1/5 · Muy bajo
Todavía no hay notas especiales de seguridad.
Preguntas frecuentes
¿Cómo identificar a Round-Leaved St John'S-Wort?
La forma más fácil de identificar a Round-Leaved St John'S-Wort es usar la aplicación de identificación de naturaleza Snappit.
¿Cuál es el longitud de Round-Leaved St John'S-Wort?
5-20 cm
¿Cuál es el esperanza de vida de Round-Leaved St John'S-Wort?
3-10 años
¿Qué come Round-Leaved St John'S-Wort?
As a photosynthetic plant, it produces its own energy using sunlight, carbon dioxide, and water while absorbing essential minerals from limestone soils.
¿Dónde se encuentra normalmente Round-Leaved St John'S-Wort?
Found in damp limestone rock crevices, mountain scree slopes, and shaded alpine cliffs.
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