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Sphaeralcea ambigua, is a species of flowering plant commonly known as desert globemallow or apricot mallow, is a member of the genus Sphaeralcea in the mallow family (Malvaceae).[1]

Desert globemallow
Desert globemallow Sphaeralcea ambigua var. ambigua
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Malvales
Family:	Malvaceae
Genus:	Sphaeralcea
Species:	S. ambigua
Binomial name
Sphaeralcea ambigua A.Gray

It is a perennial shrub native to parts of California, Nevada, Utah, Arizona, and New Mexico in the United States and Sonora and Baja California in northwest Mexico.[1][2] It grows well in alkaline soil, both sandy or clay, usually in the company of creosote bush scrub and desert chaparral habitats, at 150–2,500 metres (490–8,200 ft) in elevation. It is found in the Mojave Desert, Great Basin desert, and Sonoran Desert ecoregions.[2] It is a larval host to the common checkered skipper, northern white skipper, painted lady, small checkered skipper, and West Coast lady.[3]

Description

Sphaeralcea ambigua grows to 3 feet (0.91 m) in height and spreads to 2–3 feet (0.61–0.91 m) in width.[4] The leaves (see image) are fuzzy with white hairs on both sides, lobed, palmately veined, and on long stems, the number of which increase with age. The fruit is a brown capsule containing numerous seeds, first quite spherical as implied by the genus name, later flattening to a disk. The flowers are bowl-shaped, five-petaled, apricot to orange in color, and blooming in the spring.[2]

Varieties

Sphaeralcea ambigua has eight or nine named varieties.[5] They include:

• Sphaeralcea ambigua A. Gray var. ambigua [6]
• Sphaeralcea ambigua A. Gray var. aculeata Jeps. (synonym for S. a. var. ambigua) [7]
• Sphaeralcea ambigua A. Gray var. rosacea (Munz & I.M. Johnst.) Kearney [8]
• Sphaeralcea ambigua A. Gray var. rugosa (Kearney) Kearney [9]

Uses

The plant is used by members of the Shoshoni tribe of Native Americans, as well as other Indigenous people and settlers in the region, as a food source and medicinal plant.[10]

Cultivation

Sphaeralcea ambigua is cultivated as an ornamental plant by specialty plant nurseries for use in desert and drought tolerant gardens, and a native plant its desert region's natural landscaping and habitat restoration projects.[4] It requires the following conditions:[4]

• Exposure: full sun
• Water: natural rainfall; supplemental water will increase flowering
• Soil: desert soil, tolerant of some clay, prefers good drainage
• Propagation: easy by seed; tricky by vegetative cuttings; best results from first flush of new spring growth
• Maintenance: low, periodically cut back to keep vegetative look

It is winter hardy in USDA Zones 6-10, withstanding temperatures as low as -10F.[11]

References

External links

• ITIS Report: Sphaeralcea ambigua
• Sphaeralcea ambigua — CalPhotos Gallery

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