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Ambrosia dumosa

Ambrosia dumosa (A. Gray) Payne

Franseria dumosa A. Gray

Burro Bush, Burro-weed, White Bursage

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassAsteridaeA large class that encompasses asters
OrderAsteralesFlowering plants with a central disk flower and surrounding petals, like daisies
FamilyAsteraceaeThe aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers
GenusAmbrosiaIt is not known why this genus is named from the Greek ἀμβροσία, or “food of the gods”
SpeciesdumosaBushy, shrubby

About plant names...

Burro bush is common in the American southwest and northwestern Mexico. Its roots grow away from those of similar species, to reduce contention for water. Creosote bush, common in the same habitats, secretes a chemical that inhibits the growth of burro bush.

Identification: Burro bush reaches up to 3' (91 cm) in height. It has many fine branches, almost resembling a porcupine. The leaves are very irregular in shape, and pale green. They remind me of lichen. Flowers are small and yellow. The seeds, which may be yellow, purple, or brown, are round in shape and sharp-pointed, like burs.

Ambrosia dumosa (Burro Bush, Burro-weed, White Bursage)

Burro bush flowers, from the Anza-Borrego Desert Natural History Association

Online References:

Ambrosia dumosa at the Arizona Sonora Desert Museum Sonoran Desert Digital Library

Ambrosia dumosa on CalPhotos

Ambrosia dumosa on the USDA Forest Service's Fire Effects Information Database

Ambrosia dumosa at the Lady Bird Johnson Wildflower Center

Ambrosia dumosa on DesertUSA: Exploring the Southwest

Ambrosia dumosa on Desert-tropicals.com

Ambrosia dumosa on Wikimedia Commons

Ambrosia dumosa on eFloras

Ambrosia dumosa from the Jepson Manual

Ambrosia dumosa description by Thomas H. Kent, last updated 16 Aug 2013.

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Ambrosia dumosa (Burro Bush, Burro-weed, White Bursage)

2/28/2010 · Anza-Borrego Desert State Park, CA
≈ 14 × 9" (35 × 23 cm) ID is uncertain

Ambrosia dumosa (Burro Bush, Burro-weed, White Bursage)

2/17/2007 · Anza-Borrego Desert State Park, CA

Ambrosia dumosa (Burro Bush, Burro-weed, White Bursage)

2/28/2010 · Anza-Borrego Desert State Park, CA
≈ 24 × 16" (62 × 41 cm) ID is uncertain


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