Golden Dyssodia
Thymophylla pentachaeta
Texas Dogweed
Thymophylla acerosa
Diminutive perennial with bright yellow flowers. Oil glands on leaves and flower bracts give strong terpene odor. Yellow disc and ray flowers appearing in spring. Leaves are dissected into linear segments. Common at roadsides, on desert flats and in and near desert washes. Detailed Description
Diminutive perennial with bright yellow flowers. Oil glands on leaves and flower bracts give strong terpene odor. Yellow disc and ray flowers appearing summer-fall. Leaves are linear. Common at roadsides, on desert flats and in and near desert washes. Detailed Description
Prickly Sow Thistle
Sonchus asper
Annual Sunflower
Helianthus annuus
Dandelion-like weed with usu. sharp prickles along margins of leaves. Seed with plume of fine bristles. Detailed Description
This photo is part of the Wikimedia Project. Common summer annual mostly in agricultural areas with irrigation, but also occasional along rivers and streams. Large radiate heads with yellow rays a dark center 'eyes.' Detailed Description
Alkali Goldenweed
Isocoma acradenia
Narrow-leaf Goldenbush
Ericameria linearifolia
This photo is part of the Wikimedia Project. The autumn 'goldenrod' of the Sonoran Desert. Found especially in areas with periodically damp, lightly saline soil. Near irrigation. Very attractive to butterflies and wasps. Detailed Description
This shrubby aster with bright yellow rays is found along the northern tier of the Sonoran Desert and westward into the Mojave Desert. Flowers late summer and fall. Detailed Description
Tatelencho/ Gumhead
Gymnosperma glutinosa
Little Lemonhead
Coreocarpus arizonicus
This weakly shrubby plant has abundant sticky resin on linear leaves and phyllaries, thus the alternate common name, Gumhead. The flower heads are small with yellow disc florettes. Grows on rockly slopes along eastern portions of the Sonoran Desert blooming summer to fall. Detailed Description
Uncommon, weakly shrubby. Found in foothills around Tucson, Arizona. Small, bright yellow flowers. Flowers summer and fall. Leaves are pinnately discected Detailed Description
