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United Blazingstar
Mentzelia congesta
About United Blazingstar (Mentzelia congesta) 0 Nurseries Carry This Plant 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. 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. 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. 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. 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.
Plant Description
Plant Type
Plant Type
Annual herb

1.3 ft tall

Flower Color
Flower Color
Yellow, White, Orange, Green

Wildlife Supported

Butterflies & moths hosted ( 1 likely * ) SHOW ALL
Protogygia album Image
Protogygia albumProtogygia album

Landscaping Information
Common uses
Common uses
Bee Gardens

Natural Setting
Annual Precipitation: 5.8" - 49.4", Summer Precipitation: 0.21" - 3.41", Coldest Month: 24.3" - 52.4", Hottest Month: 47.2" - 78.6", Humidity: 1.08" - 28.80", Elevation: 1001" - 10562"

Alternative Names
Common Names: Ventana Blazingstar

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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