|Scientific Name||Hymenoxys richardonsii var. floribunda||USDA PLANTS Symbol||HYRIF|
|Common Name||Colorado Rubberweed||ITIS Taxonomic Serial No.||528536|
Life zones and habitat: Foothills and montane (5700 to 10500 ft); sandy, rocky soils in open areas, roadsides and open forests.
Plant: Erect perennial 8 to 14 inches tall; usually multiple (5 to 20) stems per plant, branched above; smooth to pubescent.
Leaves: Many alternate stem leaves, 3/4 to 6 inches long, narrowly linear and/or cleft into 3 to 5 long, thin lobes; surfaces are smooth to somewhat pubescent and gland-dotted.
Inflorescence: A showy display of many bright yellow flowers; each branch with a few to up to 12 flower heads in panicles; each head up to about one inch across with 7 to 14 rays and many disk florets; involucre with two series of nearly-equal length gland-dotted phyllaries.
Bloom Period: June to September.
References: "Flora of Colorado" by Jennifer Ackerfield, SEINet and Flora of North America.
|BONAP Distribution Map
Map Color Key
© Tom Lebsack 2022
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County