asterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubs

aster family, Asteraceae, Compositae, family Asteraceae, family Compositae - plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinnia

Machaeranthera tanacetifolia, tahoka daisy, tansy leaf aster - wild aster with fernlike leaves and flower heads with very narrow bright purple rays; Alberta to Texas and Mexico

Machaeranthera bigelovii, sticky aster - wild aster having leafy stems and flower heads with narrow bright reddish-lavender or purple rays; western Colorado to Arizona

Machaeranthera tortifoloia, Mojave aster - wild aster having grayish leafy stems and flower heads with narrow pale lavender or violet rayes; of rocky desert slopes California to Arizona and Utah