Mentzelia congesta

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Mentzelia congesta
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Cornales
Family: Loasaceae
Genus: Mentzelia
Species: M. congesta
Binomial name
Mentzelia congesta
Nutt ex Torr. & A.Gray

Mentzelia congesta is a species of flowering plants in the family Loasaceae known by the common name united blazingstar.


The plant is native to the western United States, from Idaho to California. [1]

It grows in forest, scrub, chaparral, and woodland habitats. It is found at 1,500–2,700 metres (4,900–8,900 ft) in elevation. [1]


It is an annual herb producing a tan-colored erect stem up to 40 centimeters tall. The leaves are up to 9 centimeters long and may be smooth-edged or lobed. [1]

The inflorescence is a dense cluster of flowers wrapped in wide, toothed bracts which are white in color with green tips. Each flower has five shiny yellow petals 3 to 9 millimeters long, each with an orange spot near the base. [1]

The fruit is a narrow, straight utricle up to 12 millimeters in length. It contains many minute angular seeds with concave sides covered in tiny bumps.[1]


  1. ^ a b c d e Jepson Flora Project (2013) . accessed 10.1.2013

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