Tag: Plants

Plants encompass a diverse kingdom of living organisms characterized by their ability to photosynthesize, converting sunlight into energy. Ranging from towering trees to delicate wildflowers, they play fundamental roles in ecosystems worldwide. They provide oxygen, food, and habitat for countless organisms, making them essential for biodiversity and human survival. With an incredible array of adaptations, from succulents conserving water in arid environments to broad-leaved plants thriving in tropical rainforests, vegetation showcase remarkable resilience and beauty. Their intricate biology includes roots for anchorage and nutrient absorption, leaves for photosynthesis, and reproductive structures like flowers or cones. Whether decorating urban landscapes or flourishing in untouched wilderness, plants serve as both providers of sustenance and symbols of natural harmony.

Davy Gilia (Gilia latiflora)

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A Davey Gilia stalk poking up between the California Poppies in the Antelope Valley Poppy Reserve.
A Davey Gilia stalk poking up between the California Poppies in the Antelope Valley Poppy Reserve.

Davy Gilia (Gilia latiflora) also known as Hollyleaf gilia or broad-flowered gilia is a flowering plant commonly found in the open flats or sandy areas and can carpet the western Mojave Desert, Joshua Tree woodlands and endemic throughout California.  This wild flower grows at 2500 to 4000 feet in elevation and grows to reach about 18 inches in height.

The plant features a tiny, small, five leafed flower about one inch in diameter. The flower is is purple in color and features a white throat to offer a beautiful display. The purple flowers are known to bloom between March and May.

Typically a Southern California Flower, the Davy Gilia has been observed in southern Nevada in the areas surrounding Rhyolite and Beatty, Nevada.

This Davy Gilia was photographed in the Antelope Valley Poppy Reserve and the small purple flower was a highlight in the lush canvas of deep golden colored, California Poppies. It was common for a taller gilia flower to explode above the shorter California Poppies.

The California Poppy was the reason from my trip, however the gilia was the purple accent which made my trip.

Beavertail Prickly Pear (opuntia basilaris)

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The Beavertail Prickly Pear cactus (opuntia basilaris) is very common in the desert south west, and would go most of the year most of the year without a second glance.  However this species of cactus exemplifies the best of what the desert has to offer in one symbol.

Beavertail Prickly Pear. Photograph by James L Rathbun
Beavertail Prickly Pear. Photograph by James L Rathbun

The Beavertail Prickly Pear grows in clumps, low to the ground and grows horizontally rather than vertically like the iconic saguaro.  The dull greenish grey leaves grows feature a complete lack of spines and a shaped which gives the plant it’s name.  The pads of this cactus lake the spines traditionally associated with cactus, but rather the pads are covered with minuscule, gray-blue bristles which feature barbed tips which easily puncture human skin.

Each spring the cactus puts on a display of wild flowers which is amazing to behold in the arid desert environments.  Typically starting the March, each cactus pad my put out several shoots which Colosseum in a burst of colors, most commonly a vibrant pink but also known to be yellow, white or rose colored.

Beavertail Cactus found off the Mormon Wells Road, Las Vegas, Nevada
Beavertail Cactus found off the Mormon Well Road, Las Vegas, Nevada

The cactus typically grows in  rocky , sandy plains, valleys, washes & canyons  all over Arizona, California, Nevada, Utah and Northern Mexico.

Spreading Phlox ( Phlox diffusa )

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Spreading Phlox ( Phlox diffusa ) is a perennial shrub with small needle like leaves.  This is a small white flowering plant prefers alpine, sub-alpine environments and rocky or sandy soil.  This is a low growing plant which is commonly only two to eight inches tall which probably offers survival advantages when confronted with the harsh landscapes of sub-alpine and alpine environments, in which it thrives.

Photographed in the White Moundtains, Phlox diffusa is a small white flowering plant which prefers alpine and sub-alpine environments.
Photographed in the White Moundtains in California Phlox diffusa is a small white flowering plant which prefers alpine and sub-alpine environments. Photograph by James L Rathbun

Spreading Phlox is commonly found and adapted high in the mountains and distributed throughout in the western United States and Canada. This plant employs a tap route, which is ideally suited to capture water deeper under ground and also offers an anchor to help the plant cling to the mountain in high wind conditions. The plant is short, and when in full bloom, the flowers may completely obscure the green needle like leaves from view.

The five petaled flowers range in color from a clean, magnificent white to calming understated lavender or pink color.  

The blooms are typically visible from May to August and a welcome sight to those who hike at elevation.

Desert Marigolds (Baileya multiradiata)

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Desert Marigolds located off the Old Mojave Road.
Desert Marigolds photographed near the Old Mojave Road.

Biological Report: Desert Marigold

Scientific Taxonomy

  • Kingdom: Plantae
  • Clade: Tracheophytes
  • Clade: Angiosperms
  • Clade: Eudicots
  • Clade: Asterids
  • Order: Asterales
  • Family: Asteraceae (Aster or Sunflower family)
  • Genus: Baileya
  • Species: Baileya multiradiata Harv. & A. Gray ex A. Gray

Common names include desert marigold, showy desert marigold, paper daisy, desert baileya, and hierba amarilla. Synonyms include Baileya australis, Baileya multiradiata var. nudicaulis, Baileya multiradiata var. thurberi, and Baileya thurberi. The genus is named after American botanist Jacob Whitman Bailey; “multiradiata” refers to the many-rayed flower heads.

Description

Desert marigold is a native, sun-loving biennial or short-lived perennial forb/herb that typically grows 12–18 inches (30–52 cm) tall and spreads 4–12 inches (10–30 cm) wide, forming attractive mound-shaped clumps. The basal leaves are grayish-green, woolly (covered in soft white hairs that help retain moisture), pinnately lobed to entire, and clustered at the base (4–10 cm long). The stems are mostly leafless and branched in the lower half. Flower heads are solitary, daisy-like composites borne on long, naked stalks (10–32 cm). Each head measures about 1.5–2 inches (4–5 cm) across with 25–50 bright yellow ray florets (the “petals”) surrounding a central disk of 25–50+ yellow disk florets. As the flowers age, the rays fade and become papery, giving rise to the common name “paper daisy.” The plant is adapted to arid conditions and is distinguished from similar species like woolly desert marigold (Baileya pleniradiata) by its taller stature, longer bloom period, and greater abundance.

Blooms

The showy, bright-yellow composite flower heads bloom intermittently from March (or April) through November, and can continue year-round in favorable conditions with adequate moisture. Flowering is sporadic but prolific, often triggered by rainfall, producing impressive mounds of nearly solid yellow. The long-lasting blooms turn papery and persist on the plant as they age. This extended blooming period makes it one of the most reliable and conspicuous desert wildflowers.

Range and Distribution

Desert marigold is native to the Mojave, Sonoran, and Chihuahuan deserts of the southwestern United States and northern Mexico. In the U.S., it occurs in Arizona, California, Nevada, New Mexico, Texas, and Utah (primarily at lower to mid-elevations). In Mexico, it extends into states including Sonora, Chihuahua, Coahuila, Durango, and Aguascalientes. It grows on sandy or gravelly (often alkaline) soils in washes, roadsides, rocky slopes, sandy plains, mesas, and semidesert grasslands, from near sea level up to about 5,000–6,500 ft (100–1,981 m). It thrives in full sun and well-drained soils across desert ecosystems.

This hardy, drought-tolerant wildflower is an iconic component of southwestern desert landscapes, valued for its cheerful blooms and adaptability.

This yellow wild flower is also known as:

  • Desert Marigold
  • Showy Desert Marigold
  • Paper Daisy
  • Desert Baileya

Desert Primrose (Oenothera deltoides)

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Desert Primrose photographed in Anza Burego, CA
Desert Primrose photographed in Anza Burego, CA

Classification (Taxonomy)

Oenothera deltoides belongs to the evening primrose family and is classified as follows (using a combination of traditional Linnaean ranks and modern phylogenetic clades):

  • Kingdom: Plantae
  • Clade: Tracheophytes (vascular plants)
  • Clade: Angiosperms (flowering plants)
  • Clade: Eudicots
  • Clade: Rosids
  • Order: Myrtales
  • Family: Onagraceae Juss. (Evening Primrose family)
  • Genus: Oenothera L.
  • Species: Oenothera deltoides Torr. & Frém. (described in 1845 by John Torrey and John C. Frémont)

The species includes several subspecies (e.g., O. d. subsp. howellii, which is federally endangered in California, and others such as subsp. deltoides, subsp. piperi, subsp. ambigua, subsp. cognata, and subsp. julpunensis). The overall species is considered secure.

Description

Oenothera deltoides, commonly known as the Desert Primrose, is a bushy or mounded annual (sometimes short-lived perennial) herb in the Evening Primrose family. It typically grows 2–18 inches (5–46 cm) tall but can reach up to 3 feet (about 1 m) in favorable conditions, with a spread up to 40 inches (1 m) wide. The plant often forms a dense basal rosette with a central erect stem and several decumbent to ascending leafy branches. The herbage is grayish-green to pale green and may be hairy or glandular.

Leaves: Primarily basal and sparse along the stems; deltoid (triangular) to obovate or oblanceolate in shape, up to 4 inches (10 cm) long. Margins are often toothed, lobed, grooved, or cleft, giving a distinctive triangular appearance (reflected in the species epithet deltoides).

Flowers: Large, showy, and fragrant, measuring 1.5–3 inches (4–8 cm) wide with four white petals forming a saucer or cup shape (sometimes turning yellowish toward the center). They open in the early evening (around sunset) and close by mid-morning, a classic evening-primrose trait. The flowers are solitary in the upper leaf axils and fade to pinkish with age. They are pollinated primarily by nocturnal moths (such as the white-lined sphinx moth) and native bees.

Fruit: A woody capsule that persists after flowering.

Distinctive Feature: After the plant dies (typically after setting seed), the stems curl upward and inward, forming a hollow, cage- or basket-like structure. This gives rise to many of its common names and allows the dried plant to tumble in the wind, dispersing seeds.

The plant is highly adapted to arid conditions and often carpets sandy desert floors with white “tissue-paper-like” blooms following abundant winter rains.

Range and Distribution

Oenothera deltoides is native to the Southwestern United States and northern Mexico. Its range includes the Mojave and Colorado Deserts, extending into parts of the Great Basin and coastal sandy areas. It occurs in the following U.S. states: Arizona (AZ), California (CA), Nevada (NV), Oregon (OR), and Utah (UT). In Mexico, it is found in northern Baja California and northwestern regions.

Habitat: Dry, open sandy soils, dunes, desert washes, rocky cliffs, hillsides, and occasionally beaches or coastal dunes. Elevations are generally below 2,500–5,500 feet (760–1,680 m), depending on the region. It thrives in full sun and is most abundant in the Mojave, Sonoran, and adjacent desert regions after wet winters.

Flowering season is primarily January–May (varying slightly by location and rainfall), with peak blooms often in February–April.

List of Other Common Names

In addition to Desert Primrose (or Dune Primrose), the species is known by many evocative names that reference its flowers, fragrance, or post-death “cage” structure:

  • Birdcage evening primrose
  • Basket evening primrose
  • Birdcage primrose
  • Dune evening primrose
  • Lion in a cage (or Lion-in-a-cage)
  • Devil’s lantern (or Desert lantern)
  • Fragrant primrose
  • Desert evening-primrose
  • Hairy evening primrose (occasional reference)

These names vary regionally but consistently highlight the plant’s striking appearance and unique dried form.

Oenothera deltoides is a beautiful and ecologically important desert wildflower, providing nectar for pollinators and contributing to the spectacular spring displays of the American Southwest. It is widely available for native plant gardening in arid regions and requires well-drained sandy soil with minimal irrigation once established.