Devil'S Spineflower

chorizanthe rigida

The Devil's Spineflower (Chorizanthe rigida) is a fascinating desert-adapted annual plant that thrives in some of the harshest arid regions of North America. During the fleeting wet winter months, it emerges as a low-profile rosette with soft, greenish-gray leaves and inconspicuous yellow flowers. However, as the blistering summer heat sets in, the plant undergoes a dramatic transformation: its fleshy parts die off, leaving behind a rigid, blackened, spine-covered skeleton that can persist in the desert landscape for several years. This ghostly wooden framework plays a crucial role in the plant's survival, guarding its seeds from hungry desert herbivores and ensuring that the next generation remains protected until the heavy rains arrive once more.

Habitat: Found on gravelly desert flats, alluvial fans, and rocky slopes of the Mojave and Sonoran deserts.

Appearance

Typically growing between 5 and 15 centimeters in height, the Devil's Spineflower has a highly distinctive structural form. When young and actively growing, it features broad, rounded, white-woolly leaves clustered at the base, with tiny yellow flowers nestled inside spiny bracts. As it dries, the leaves fall away and the stems harden into a stiff, star-like or cone-shaped cluster of dark grey to charcoal-black thorns. This rigid, spine-tipped skeletal carcass looks almost like charred wood or miniature metal spikes, making it incredibly easy to recognize against the pale desert gravel.

KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderCaryophyllalesFamilyPolygonaceaeGenusChorizanthe

Devil'S Spineflower

Interesting facts

Despite its intimidating, thorny appearance when dried, the young plant starts life with remarkably soft, fuzzy, and harmless green leaves.

Its scientific name 'rigida' perfectly describes the stiff, unyielding nature of its dried stems, which do not decay easily in the dry desert air.

The dried, spiny skeletons of this plant can persist in the desert environment for several years after the plant has died, acting as a natural barbed-wire protection for its seeds.

Special abilities

After dying, the plant's rigid, spine-covered woody structure remains intact for years, physically protecting the seeds enclosed within from granivorous animals.

It quickly germinates, flowers, and sets seeds during brief winter rains, escaping the extreme summer heat by completing its life cycle before the drought peaks.

The dried spiny bracts open and release their seeds primarily in response to moisture, ensuring seed dispersal occurs when conditions are favorable for germination.

Measurements & details

Length: 3-15 cm
Weight: 0.001-0.01 kg
Lifespan: 0-1 years

Diet & Feeding

As a photosynthetic plant, the Devil's Spineflower produces its own energy using sunlight, water, and carbon dioxide, drawing essential minerals from the rocky desert soil.

Primary Foods

Sunlight
Water
Carbon Dioxide
Soil Minerals

Ecological connections

eaten by

Mojave Desert Tortoise

Gopherus agassizii

The succulent young leaves of the growing plant are sometimes consumed by desert tortoises during the early spring.

eaten by

Desert Pocket Mouse

Chaetodipus penicillatus

Desert pocket mice forage for the seeds of this plant, though they must bypass the spiny skeleton to reach them.

mutualism

Mining Bee

Perdita spp.

Tiny solitary bees visit the small yellow flowers for nectar and pollen, acting as key pollinators during the spring bloom.

Traits

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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 Devil'S Spineflower?

The easiest way to identify Devil'S Spineflower is to use the Snappit nature identifier app.

How long is Devil'S Spineflower?

3-15 cm

How much does Devil'S Spineflower weigh?

0.001-0.01 kg

How long does Devil'S Spineflower live?

0-1 years

What does Devil'S Spineflower eat?

As a photosynthetic plant, the Devil's Spineflower produces its own energy using sunlight, water, and carbon dioxide, drawing essential minerals from the rocky desert soil.

Where is Devil'S Spineflower usually found?

Found on gravelly desert flats, alluvial fans, and rocky slopes of the Mojave and Sonoran deserts.