Yellow Mountain-Avens

dryas drummondii

The Yellow Mountain-Avens (Dryas drummondii) is a resilient, mat-forming woody dwarf shrub belonging to the rose family. Renowned for its ability to thrive in harsh, barren environments, this pioneering species is frequently one of the first plants to colonize newly exposed gravels left behind by retreating glaciers or shifting rivers. By forming symbiotic relationships with nitrogen-fixing bacteria, it plays a vital ecological role in enriching nutrient-poor soils, facilitating the gradual succession of richer plant communities. Its dense, creeping mats also help stabilize loose soils, preventing erosion along steep alpine slopes and dynamic river systems.

生息地: Typically found on gravelly river flats, glacial moraines, scree slopes, and rocky alpine meadows.

外見

This low-growing shrub is easily identified by its nodding, bell-shaped yellow flowers that bloom singly on upright, hairy stems. Unlike other mountain-avens, its petals remain somewhat closed, creating a cup-like appearance. Its leaves are oblong, dark green, and leathery with deeply scalloped edges, contrasting sharply with their woolly, silver-white undersides. As the flowers mature, they transform into spectacular, fluffy, feather-like seed heads that spiral elegantly to catch alpine winds.

界Plantae門Tracheophyta綱Magnoliopsida目Rosales科Rosaceae属Dryas

Yellow Mountain-Avens

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 acts as a primary ecological builder, transforming barren, rocky debris into nutrient-rich soil that allows other plant species to colonize the area.

Its twisted, feathery seed heads act like miniature weather vanes, twisting tightly when wet and expanding when dry to release seeds in dry, windy conditions.

Unlike most other mountain-avens which have wide-open white flowers, the yellow mountain-avens has nodding yellow blossoms that never fully open.

特殊能力

Cooperates with Frankia bacteria in its root nodules to convert atmospheric nitrogen into a usable form, allowing it to survive on sterile gravel.

Produces feathery, plumose styles on its seeds that act as sails to maximize dispersal across barren post-glacial landscapes.

Establishes extensive, woody root networks and dense ground-hugging mats that bind loose gravel and prevent erosion.

サイズと詳細

長さ: 5-25 cm
寿命: 10-50 年

食性と食事

As a photosynthetic plant, it generates its own energy using sunlight, carbon dioxide, and water, supplemented by nutrients fixed via root nodule symbiosis.

主な食物

Sunlight
Carbon dioxide
Water
Mineral nutrients

採餌方法

Photosynthesis

生態系とのつながり

mutualism

Frankia Bacteria

Frankia alni

Obtains crucial fixed nitrogen through a mutualistic relationship in its root nodules.

eaten by

Mountain Goat

Oreamnos americanus

Graze on the leaves and stems of the dwarf shrub in high alpine habitats during the summer months.

mutualism

Western Bumblebee

Bombus occidentalis

Visits the nodding yellow flowers for nectar and pollen, acting as a key pollinator.

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

Yellow Mountain-Avensを見分けるには？

Yellow Mountain-Avens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。

Yellow Mountain-Avensの長さは何ですか？

5-25 cm

Yellow Mountain-Avensの寿命は何ですか？

10-50 年

Yellow Mountain-Avensは何を食べますか？

As a photosynthetic plant, it generates its own energy using sunlight, carbon dioxide, and water, supplemented by nutrients fixed via root nodule symbiosis.

Yellow Mountain-Avensは通常どこに生息していますか？

Typically found on gravelly river flats, glacial moraines, scree slopes, and rocky alpine meadows.

Yellow Mountain-Avensはどのように狩りをしますか？

Photosynthesis