Overview

Distribution

National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Global Range: CA (Sonoran Desert), AZ; Mexico.

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Physical Description

Morphology

Physical Description

Perennial, Shrubs, Woody throughout, Stems woody below, or from woody crown or caudex, Nodules present, Stems erect or ascending, Stems or branches arching, spreading or decumbent, Stems less than 1 m tall, Trunk or stems armed with thorns, spines or prickles, Plants gland-dotted or with gland-tipped hairs, Stems solid, Stems or young twigs glabrous or sparsely glabrate, Stems or young twigs sparsely to densely hairy, Stems silvery, canescent, tomentose, cobwebby, or wooly, Leaves alternate, Leaves petiolate, Stipules inconspicuous, absent, or caducous, Stipules setiform, subulate or acicular, Stipules deciduous, Stipules free, Leaves simple, or appearing so, Leaves compound, Leaf or leaflet margins entire, Leaflets alternate or subopposite, Leaflet s 1, Leaflets 3, Leaves glandular punctate or gland-dotted, Leaves glabrous or nearly so, Inflorescences racemes, Inflorescence axillary, Inflorescence or flowers lax, declined or pendulous, Bracts conspicuously present, Flowers zygomorphic, Calyx 5-lobed, Calyx gland-dotted or with glandular spot, Calyx hairy, Petals separate, Corolla papilionaceous, Petals blue, lavander to purple, or violet, Banner petal suborbicular, broadly rounded, Wing petals narrow, oblanceolate to oblong, Wing tips obtuse or rounded, Keel tips obtuse or rounded, not beaked, Stamens 9-10, Stamens monadelphous, united below, Filaments glabrous, Style terete, Fruit a legume, Fruit unilocular, Fruit indehiscent, Fruit oblong or ellipsoidal, Fruit exserted from calyx, Fruit glabrous or glabrate, Fruit gland-dotted or with gland-tipped hairs, Fruit 1-seeded, Fruit 2-seeded, Seeds ovoid to rounded in outline, Seed surface smooth, Seeds olive, brown, or black.
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Dr. David Bogler

Source: USDA NRCS PLANTS Database

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Type Information

Possible type for Dalea schottii Torr.
Catalog Number: US 24440
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): A. C. V. Schott
Locality: Near Fort Yuma, Sonora, Mexico, North America
  • Possible type: Torrey, J. 1859. Rep. U.S. Mex. Bound. Surv. 2 (1): 53.
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© Smithsonian Institution, National Museum of Natural History, Department of Botany

Source: National Museum of Natural History Collections

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Ecology

Habitat

Comments: Slopes, benches, washes; 0-600 m.

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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: N3 - Vulnerable

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NatureServe Conservation Status

Rounded Global Status Rank: G3 - Vulnerable

Reasons: Slopes, benches and washes of the Sonoran Desert of CA, AZ and Mexico.

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Wikipedia

Psorothamnus schottii

Psorothamnus schottii is a species of flowering plant in the legume family known by the common name Schott's dalea. It is native to the Sonoran Deserts of northern Mexico and adjacent sections of Arizona and the Colorado Desert in California.

Description

Psorothamnus schottii is a shrub approaching two meters in maximum height. Its highly branching stems are green to woolly gray-green and glandular. The gland-pitted linear leaves are up to 3 centimeters long and not divided into leaflets.

The inflorescence is an open raceme of up to 15 flowers. Each flower has a deep purple blue pealike corolla up to a centimeter long in a glandular tubular calyx of sepals with pointed lobes. The fruit is a legume pod coated in glands and containing one seed.

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