John Day Pincushion

chaenactis nevii

The John Day Pincushion (Chaenactis nevii) is a fascinating, rare annual wildflower native only to the scenic badlands of north-central Oregon. Thriving in the harsh, alkaline clay of the John Day Formation, this resilient little plant adds a splash of vibrant color to an otherwise barren, volcanic landscape. Its name perfectly captures the visual of its tightly packed floral heads, which look like tiny yellow pincushions nestled among grey-green leaves. Botanists and plant lovers travel from afar to catch a glimpse of this highly specialized endemic species during its brief spring bloom. Adapting to survive in soils rich in minerals but poor in nutrients, it represents a remarkable evolutionary success story of desert adaptation.

生息地: Found exclusively on alkaline clay soils and volcanic ash exposures within the arid shrub-steppe of the John Day River basin.

外見

This small annual herb typically grows 10 to 30 centimeters tall, featuring branching, glandular-pubescent stems that give it a slightly sticky feel. Its leaves are deeply lobed, dusty green to grayish in color, and form a low rosette before extending up the stem. The most identifying feature is its flower head: a compact, discoid cluster of bright, golden-yellow tubular florets. Unlike other pincushions, it lacks showy ray petals, giving the bloom a distinctive, dome-shaped pincushion appearance that contrasts sharply with the pale clay soils it inhabits.

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

John Day Pincushion

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 strict endemic to Oregon, meaning it grows wild absolutely nowhere else on Earth except around the John Day River basin.

Its seeds can remain dormant in dry desert soil for multiple years, waiting to sprout only when winter rainfall is sufficient.

This species is one of the very few pincushion flowers in its genus that blooms bright yellow instead of white or pink.

特殊能力

Successfully extracts moisture and nutrients from highly alkaline, mineral-rich clays derived from volcanic ash where most other plants cannot survive.

Rapidly germinates, flowers, and sets seed in a matter of weeks during spring to evade the scorching heat of the summer desert.

Possesses sticky glandular hairs on its stems and leaves that deter crawling herbivorous insects and reduce water loss.

サイズと詳細

長さ: 10+ cm

食性と食事

As an autotrophic plant, it utilizes chlorophyll to produce its own food through photosynthesis, capturing sunlight and absorbing essential minerals directly from the soil.

主な食物

Sunlight
Water
Carbon dioxide
Soil minerals

生態系とのつながり

mutualism

Orange-legged Furrow Bee

Halictus rubicundus

Feeds on the nectar and pollen, acting as the primary pollinator for this specialized wildflower.

competitor

Big Sagebrush

Artemisia tridentata

Provides sparse ground cover and competes for moisture in the arid clay soils.

eaten by

Mountain Cottontail

Sylvilagus nuttallii

Occasionally grazes on the foliage of young plants despite their bitter, glandular defenses.

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

John Day Pincushionを見分けるには？

John Day Pincushion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。

John Day Pincushionの長さは何ですか？

10+ cm

John Day Pincushionは何を食べますか？

As an autotrophic plant, it utilizes chlorophyll to produce its own food through photosynthesis, capturing sunlight and absorbing essential minerals directly from the soil.

John Day Pincushionは通常どこに生息していますか？

Found exclusively on alkaline clay soils and volcanic ash exposures within the arid shrub-steppe of the John Day River basin.