Scientific Family
Asteraceae
Other common names
Rosinweed
tarweed
sticky heads
broadleaf gumplant
Plant type
Forbs and Subshrubs
Origin
Native
Lifecycle
Biennial or perennial
Height
To 3 feet.
Riparian
Yes
Stout erect stem bears several branches with yellow daisy-like flower heads. A short-lived perennial (sometimes classified as an annual or biennial). Invades overgrazed ranch land.
Highly resinous, biennial or short lived perennial. Leaves alternate, clasping, oblong with saw-toothed edges. Stems few, white or straw colored. Flower heads have yellow ray and disc flowers. Flower head bract tips spreading recurved, bases scaly.
Habitat
Found on sands, clays and sub-alkaline soils; disturbed sites, grasslands, along streams and in forest and woodland understories.
Plant Community
Riparian
Pinyon Juniper Woodlands
Montane Conifer Forest
Interior Chaparral
Grasslands
Disturbed Areas
Low elevation
5000
High elevation
7000
Flower Characteristics
Yellow rays, darker yellow disc flowers, daisy-like flower heads to 1-1/2 inches wide; bract tips surrounding flower heads are rolled back and very sticky.
Flower color
Yellow
Flower shape
Daisy or dandelion-like
Tubular
No
First bloom month
June
Last bloom month
October
Flower clusters
None
Leaf and Stem Characteristics
Variable shaped leaves, from oval to spoon shaped. Stemless, clasping reddish stem at base; middle and upper leaves mostly clasping; to 4 inches long. Leaves are dotted with glands.
Leaf type
Simple
Leaf color
Dark green
Leaf shape
Narrow
Leaf margin
Toothed
Leaves clasp
Yes
Leaf hairs
None
Spines
No
Fruit and Seed Characteristics
Achenes are short, thick, and compressed, straw colored, brown or gray; topped with a pappus of 2 to 3 straight awns, shorter than the disc corollas.
Fruit type
Achene
Fruit color
Brownish to gray