Descurainia Bourgaeana

descurainia bourgaeana

Descurainia bourgaeana, locally known as "hierba pajonera," is a remarkable high-altitude shrub endemic to the Canary Islands, primarily thriving in the subalpine volcanic plains of Mount Teide in Tenerife and high elevations in La Palma. This resilient plant forms dense, dome-shaped cushions that endure extreme environmental conditions, including freezing winter temperatures, scorching summer heat, and dry, nutrient-poor volcanic soils. In late spring, it undergoes a spectacular transformation, erupting into a vibrant mass of bright yellow blossoms that blanket the caldera floors and rocky slopes. It plays a critical ecological role as a pioneer species, helping to stabilize loose volcanic ash and providing a vital nectar source for alpine pollinators.

生息地: Found in high-altitude subalpine scrublands on dry volcanic pumice, lava flows, and rocky slopes, primarily at elevations between 2,000 and 2,500 meters.

外見

This species grows as a highly branched, dense, hemispherical shrub reaching heights of 40 to 100 centimeters. It features grayish-green, deeply divided, lobed leaves covered in fine, star-shaped hairs that give the foliage a velvety appearance and help reflect excess radiation. During its blooming season from May to June, the plant is completely covered with dense, erect clusters of small, four-petaled yellow flowers. After flowering, it produces narrow, upright seed pods (siliques) that eventually dry out, leaving a straw-like skeleton that persists through the winter.

界Plantae門Tracheophyta綱Magnoliopsida目Brassicales科Brassicaceae属Descurainia

Descurainia Bourgaeana

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 resilient survivor of thermal shock, enduring temperatures below freezing at night and over 35 degrees Celsius during summer days.

Its common name 'hierba pajonera' (straw grass) refers to the dry, straw-like skeleton the plant turns into during the dry summer months.

The plant's vibrant yellow dome blooms are so dense and numerous that they can be easily seen from satellite imagery of Teide National Park during peak spring.

特殊能力

The dense, rounded cushion shape protects the inner stems from high wind damage and helps create a buffered microclimate that retains moisture.

Possesses a highly efficient root system that can anchor in loose volcanic pumice and extract sparse moisture and nutrients from young volcanic soils.

The fine, dense hairs covering its leaves reduce water loss from transpiration and shield the plant tissues from intense ultraviolet light at high altitudes.

サイズと詳細

長さ: 40-100 cm
寿命: 5-15 年

食性と食事

As a photosynthetic plant, it synthesizes its own organic compounds using sunlight, carbon dioxide, water, and minerals absorbed from the soil.

主な食物

Sunlight
Carbon dioxide
Water
Soil minerals

採餌方法

Photosynthesis

生態系とのつながり

eaten by

Gallot's Lizard

Gallotia galloti

The endemic lizard feeds on the flowers and fruits of the plant, assisting in seed dispersal.

mutualism

Alluaud's Flower Bee

Anthophora alluaudi

The endemic solitary bee visits the flowers for nectar, acting as a primary pollinator.

eaten by

European Rabbit

Oryctolagus cuniculus

Introduced European rabbits browse on the tender spring shoots and can cause localized damage.

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

Descurainia Bourgaeanaを見分けるには？

Descurainia Bourgaeana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。

Descurainia Bourgaeanaの長さは何ですか？

40-100 cm

Descurainia Bourgaeanaの寿命は何ですか？

5-15 年

Descurainia Bourgaeanaは何を食べますか？

As a photosynthetic plant, it synthesizes its own organic compounds using sunlight, carbon dioxide, water, and minerals absorbed from the soil.

Descurainia Bourgaeanaは通常どこに生息していますか？

Found in high-altitude subalpine scrublands on dry volcanic pumice, lava flows, and rocky slopes, primarily at elevations between 2,000 and 2,500 meters.

Descurainia Bourgaeanaはどのように狩りをしますか？

Photosynthesis