Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

Home to the plants of the Sonoran, Chihuahuan and Mojave Deserts

Cirsium ochrocentrum, Yellowspine Thistle

Eriogonum trichopes, Little Deserttrumpet

Little Deserttrumpet is found in the southwestern United States in; AZ, CA, NV, NM, UT. Note the delicate yellow-green erect flowering stems. Eriogonum Little Deserttrumpet has soft green basal leaves, spreading to semi-erect. This early-growth  basal leaf arrangement is similar to many species of Eriogonum for which there are about 230 species in North America. Eriogonum trichopes Little Deserttrumpet, also called Skeleton Weed or Yellow Trumpet may be in flower throughout the year, but more predictably from April to August. Eriogonum trichopes Little Deserttrumpet has yellow to greenish-yellow flowers often with greenish to reddish midribs. The genus Eriogonum is well represented in the southwest United States, and in Arizona, both for species numbers and individual populations. Eriogonum trichopes

Scientific Name: Eriogonum trichopes
Common Name: Little Deserttrumpet
Also Called: Little Desert Trumpet, Skeleton Weed, Yellow Trumpet
Family: Polygonaceae, Buckwheat Family
Synonyms: (Eriogonum trichopodum var. minus)
Status: Native
Duration: Annual
Size: Up to 16 or more (23").
Growth Form: Forb/herb; spreading to somewhat erect; glabrous and often glaucous, yellow-green; aerial flowering stems erect.
Leaves: Green; basal, shape variable, oblong to reniform, leaves with petioles leaf margins slightly undulating, leaves smooth or thinly hairy; both leaf surfaces short-hirsute.
Flower Color: Yellow to greenish yellow with greenish to reddish midribs; inflorescence cyme-like; flowers coarsely white-hairy, sepals and petals collectively referred to as a perianth; stamens exserted; peduncles are mostly erect; fruit smooth.
Flowering Season: Flowering almost throughout the year; April to August in California.
Elevation: Up to 4,000 feet.

Habitat Preferences: Common on the deserts and low hills, slopes, clay, sand or gravel flats and washes.

Recorded Range: Eriogonum trichopes is found in the southwestern United States in; AZ, CA, NV, NM, UT. In Arizona it occurs throughout most of the state but few or no records in the northeast corner of the state. Eriogonum trichopes is also native to Baja California and northwest Mexico.

North America & US County Distribution Map for Eriogonum trichopes.

U.S. Weed Information: No information available.
Invasive/Noxious Weed Information: No information available.
Wetland Indicator: No information available.
Threatened/Endangered Information: No information available.

Genus Information: Eriogonum is found throughout North America with approximately 230 species and 446 accepted taxa overall. World-wide, The Plant List identifies 255 species in Eriogonum.

Eriogonum is found throughout Arizona and entire southwest with 58 species in Arizona, 115 species in California, 36 species in New Mexico, 79 species in Nevada and 67 species in California. All data is approximate and subject to taxonomic changes.

The genus Eriogonum is well represented in the southwest and in Arizona both for species numbers and individual populations.

There are 2 varieties in Eriogonum trichopes;
Eriogonum trichopes var. hooveri, Hoover's Deserttrumpet (CA);
Eriogonum trichopes var. trichopes, Little Deserttrumpet (AZ, CA, NM, NV, UT)

Comments: Little Deserttrumpet may be found in almost pure stands. This species looks similar to Desert Trumpet but Little Deserttrumpet has many hair-like branches of the inflorescence, with very small, few-flowered involucre are distinctive.

Various species of Eriogonum play host to the larvae (caterpillar) of several butterflies including the Mormon Metalmark butterfly (Apodemia mormo), the Rocky Mountain dotted-blue (Euphilotes ancilla) and the Lupine Blue (Aricia lupini).

In Southwest Desert Flora also see Abert's Buckwheat, Eriogonum abertianum, Skeleton Weed, Eriogonum deflexum, Flat-top Buckwheat, Eriogonum fasciculatum, Desert Trumpet, Eriogonum inflatum, Sulphur-flower Buckwheat, Eriogonum umbellatum and Wright Buckwheat, Eriogonum wrightii.

Date Profile Completed: 06/03/2016, updated 01/01/2017, updated format 10/01/2017
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database and USGS ITIS search - (accessed 06/03/2016)
Arizona Flora, Kearney, Thomas H., Peebles, Robert H., 1960, University of California Press, Berkley and Los Angeles, California.
Craig C. Freeman, James L. Reveal, FNA, | Family List | FNA Vol. 5 | Polygonaceae | 151. Eriogonum trichopes Torrey in W. H. Emory, Not. Milit. Reconn. 150. 1848. Flora of North America Editorial Committee, eds. 1993+. Flora of North America North of Mexico. 16+ vols. New York and Oxford.
The Plant List (2013). Version 1.1. Published on the Internet; (accessed 06/02/2016).
Native Plant Information Network, NPIN (2013). Published on the Internet [accessed: ]. Lady Bird Johnson Wildflower Center at The University of Texas, Austin, TX.
1993, The Jepson Manual, Citation: (accessed 06/03/2016),5994,6181
SEINet for synonyms, scientific names, recorded geographic locations and general information 06/04/2016).
Wikipedia contributors, 'Apodemia mormo', Wikipedia, The Free Encyclopedia, 11 November 2014, 02:00 UTC, [accessed 4 June 2016]
Wikipedia contributors, 'Aricia lupini', Wikipedia, The Free Encyclopedia, 1 April 2016, 01:54 UTC, [accessed 4 June 2016]
Wikipedia contributors, 'Euphilotes ancilla', Wikipedia, The Free Encyclopedia, 11 February 2016, 15:21 UTC, [accessed 4 June 2016]