Hoary Pincushion

chaenactis douglasii

The Hoary Pincushion (Chaenactis douglasii) is a resilient, biennial or short-lived perennial wildflower native to the arid and mountainous regions of western North America. Belonging to the aster family, this species is well-adapted to survive in harsh, rocky, and sandy soils where other plants struggle. It is easily recognized by its dusty, cobwebby appearance, which is actually a dense covering of fine white hairs designed to conserve moisture in dry environments. Throughout the summer, the Hoary Pincushion produces clusters of delicate white to pale pink flower heads. These flower heads lack the outer ray petals typical of many asters, giving them a distinct, rounded appearance reminiscent of a classic sewing pincushion. It plays an important role in its native ecosystem, providing vital nectar for native bees, butterflies, and other pollinators in dry sagebrush steppes and pine forests. Discover and identify species like Hoary Pincushion with the Snappit app.

Habitat: Found in dry, open habitats including sagebrush deserts, sandy plains, gravelly volcanic slopes, and open ponderosa pine forests.

Appearance

This species grows as an erect herb, ranging from 10 to 60 centimeters in height. Its stems and deeply lobed, fern-like leaves are densely covered in white, woolly, or cobweb-like hairs, giving the entire plant a dusty, grayish-green or 'hoary' look. The flower heads are clustered at the ends of the stems, featuring numerous tubular, five-lobed disk florets that range from pure white to a soft, pastel pink. The outstanding feature is the complete absence of ray florets, giving each flower head a tight, dome-like, pincushion appearance studded with protruding, dark-tipped stamens.

KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderAsteralesFamilyAsteraceaeGenusChaenactis

Hoary Pincushion

Interesting facts

Its common name 'hoary' refers to the grayish-white, cobwebby hairs that give it a frosted or dusty look, protecting it from drying out in harsh sun.

Native American tribes, including the Okanogan-Colville, historically used infusions of the root and leaves as a wash for sore eyes and skin irritations.

Unlike classic daisies or sunflowers, the hoary pincushion's flower heads completely lack showy outer ray petals, consisting entirely of tightly packed disk florets.

Special abilities

Densely matted white hairs reflect intense solar radiation and reduce wind-induced evaporation, conserving vital moisture.

Features a strong, deep taproot that stabilizes the plant in loose gravel, volcanic pumice, and shifting sandy soils.

Can maintain cellular function and photosynthetic activity under extreme heat and highly prolonged dry spells.

Measurements & details

Length: 10-60 cm
Lifespan: 2-5 years

Diet & Feeding

As a photosynthetic plant, it manufactures its own sugars using sunlight, water, and carbon dioxide, while absorbing essential minerals from the soil.

Primary Foods

Sunlight
Water
Carbon Dioxide
Soil Minerals

Ecological connections

mutualism

Western Honey Bee

Apis mellifera

Pollinates the flowers while gathering nectar.

mutualism

Painted Lady

Vanessa cardui

Feeds on the nectar of the blossoms during its migration.

eaten by

Mountain Cottontail

Sylvilagus nuttallii

Occasionally browses on the foliage and flower heads.

Traits

No trait badges are assigned for this object yet.

Also known as

No aliases listed yet.

Collections

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Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How to identify Hoary Pincushion?

The easiest way to identify Hoary Pincushion is to use the Snappit nature identifier app.

How long is Hoary Pincushion?

10-60 cm

How long does Hoary Pincushion live?

2-5 years

What does Hoary Pincushion eat?

As a photosynthetic plant, it manufactures its own sugars using sunlight, water, and carbon dioxide, while absorbing essential minerals from the soil.

Where is Hoary Pincushion usually found?

Found in dry, open habitats including sagebrush deserts, sandy plains, gravelly volcanic slopes, and open ponderosa pine forests.