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Parkinsonia microphylla Torr.

Foothills Palo Verde, yellow paloverde

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
SubclassRosidaeRoses, legumes, proteas, dogwoods, hydrangeas, mistletoes, euphorbias, grapes, many more
OrderFabalesLegumes (pea and bean families)
FamilyFabaceaeLegume family (peas and beans)
GenusParkinsoniaNamed for John Parkinson, author, botanist, Apothecary of London and king’s herbalist to James I
Speciesmicrophylla“Small-leaved”

About plant names...

The yellow palo verde is native to the Sonoran Desert. Although it typically looses its leaves in the punishing summer heat, its trunk and branches are photosynthetic. It also has deep roots so it can reach any available water.

Identification: The most notable difference between this palo verde and blue palo verde is the trunk and branch color. Foothills palo verde is yellow-green, vs. a bluish cast to blue palo verde.

 

Parkinsonia microphylla (foothills Palo Verde, yellow paloverde)

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

 
Parkinsonia florida
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Parkinsonia microphylla
Common Name

blue palo verde

foothills Palo Verde
Plant 15-30′ (4.6-9.1 m). Trunk and branches are bluish green, photosynthetic. 10-20′ (3-6.1 m) high, and about the same around. Bark is smooth and yellow-green in color.
Flowers

 

Bright yellow, blooming earlier than foothills palo verde. Photo by Stan Shebs.

 

Yellow. Photo by aspidoscelis (Flickr).
Leaves Bipinnate, with leaflets ⅛-¼″ (3.2-6.3 mm) long; often leafless. In small pinnate stalks up to 1″ (2.5 cm), containing a row of tiny, round leaflets. Dropped entirely during droughts.
Fruit A flat pod with one or more seeds, brown, turning white with age, up to 3″ (7.6 cm) long. 2-3″ (5-7.6 cm) seed pods contain up to five seeds.
Range/ Zones

Habitats Creosote bush scrub, below 3600′ (1.1 km) Mohave and Sonoran deserts of Arizona, California, and Baja Mexico; at up to 4000′ (1.2 km)
Type Wild Wild

 

Online References:

Southeastern Arizona Wildflowers and the Plants of the Sonoran Desert

Blue Planet Biomes

Cals.arizona.edu

The Lady Bird Johnson Wildflower Center

CalPhotos

Wikimedia Commons

Desert-tropicals.com

The Arizona-Sonora Desert Museum Center for Sonoran Desert Studies

Desert Connections

Wikipedia

Nau.edu

The USDA Forest Service's Fire Effects Information Database

Parkinsonia microphylla (foothills Palo Verde, yellow paloverde)

5/25/2009 · Boyce Thompson Arboretum, Superior, Ari­zona

Parkinsonia microphylla (foothills Palo Verde, yellow paloverde)

2/28/2010 · Anza-Borrego Desert State Park, Cali­fornia

Cercidium microphyllum (Torr.) Rose & I.M. Johnst.

 

Parkinsonia microphylla description by Thomas H. Kent, last updated 16 Sep 2020.

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Parkinsonia microphylla (foothills Palo Verde, yellow paloverde)

2/28/2010 · Anza-Borrego Desert State Park, Cali­fornia

Parkinsonia microphylla (foothills Palo Verde, yellow paloverde)

2/28/2010 · Anza-Borrego Desert State Park, Cali­fornia · ≈ 17 × 12″ (44 × 29 cm)

Range:

About this map...