Hymenoxys richardsonii var. floribunda

(Colorado Rubberweed)

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Hymenoxys richardsonii var. floribunda, Along FR 311, Four Mile Area, Chaffee Co. 9485

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Hymenoxys richardsonii var. floribunda, Along FR 311, Four Mile Area, Chaffee Co. 9472

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Hymenoxys richardsonii var. floribunda, Along FR 311, Four Mile Area, Chaffee Co. 9479

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Hymenoxys richardsonii var. floribunda, Along FR 311, Four Mile Area, Chaffee Co. 9477

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Hymenoxys richardsonii var. floribunda, Along FR 311, Four Mile Area, Chaffee Co. 9475

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Hymenoxys richardsonii var. floribunda, Along FR 373, Four Mile Area, Chaffee Co. 9598

Scientific Name Hymenoxys richardonsii var. floribunda USDA PLANTS Symbol HYRIF
Common Name Colorado Rubberweed ITIS Taxonomic Serial No. 528536
Family Asteraceae (Sunflower) SEINet
Reference
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Description 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
Colorado Status:
Native

© Tom Lebsack 2022

Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County