Adenophyllum porophylloides, San Felipe Dogwood
Scientific Name: Adenophyllum porophylloides
Common Name: San Felipe Dogwood
Also Called: San Felipe Dyssodia
Family: Asteraceae, Sunflower Family
Synonyms: (Dyssodia porophylloides)
Size: 1½ to 2 feet.
Growth Form: Subshrub; woody base, erect multiple stems, glabrous, stems and branches slender; plants aromatic.
Leaves: Dark green; basal leaves opposite, cauline leaves alternate; leaves pinnately lobed, lobes narrow, 3 to 5 parted, linear to cuneate or oblanceolate, oil glands at base of each lobe at tip.
Flower Color: Yellow; becoming orange or red-orange; heads may be radiate or discoid; ray florets 10 to 14; disk florets 25 to 40; flower heads on tips of stems (peduncles); bracts or phyllaries 12 to 20, glandular, lanceolate, separating in fruit; fruit achenes with pappus scales composed of basally fused bristles.
Flowering Season: March to June and again from October to December, with ample summer rainfall.
Elevation: 50 to 4,000 feet.
Habitat Preferences: Washes, mesas, dry rocky slopes in deserts, alluvial fans, open scrub and woodlands; found in both Sonoran and Mojave Deserts.
Recorded Range: San Felipe Dogwood is relatively rare in the United States where it is limited in distribution to AZ, CA and NV. This species is also native to northern Baja California and Sonora Mexico.
U.S. Weed Information: No data available.
Invasive/Noxious Weed Information: No data available.
Wetland Indicator: No data available.
Threatened/Endangered Information: No data available.
North America & US County Distribution Map for Adenophyllum porophylloides.
Genus Information: In North America there are 4 species and 4 accepted taxa overall for Adenophyllum. World wide, The Plant List includes 10accepted species names and includes a further 9 of infraspecific rank for the genus Adenophyllum.
In the Southwestern United States: Arizona has 4 species of Adenophyllum, California and Nevada each have 2 species, New Mexico and Utah each have 1 species and Texas has 0 species. All data is approximate and subject to taxonomic changes.
Comments: San Felipe Dogweed is both a Mojave and Sonoran deserts species. Through its numerous resin glands this species emits a pungent rather unpleasant odor.
At a quick glance San Felipe Dogweed looks superficially like its closely related cousin Odora, Porophyllum gracile, which has significant differences in the flower head. They both also have strong disagreeable odors.