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Flat-top Broomrape
Orobanche corymbosa
About Flat-top Broomrape (Orobanche corymbosa) 0 Nurseries Carry This Plant Orobanche corymbosa is a species of broomrape known by the common name flat-top broomrape. It is native to western North America where it is a parasite growing attached to the roots of other plants, usually sagebrush (Artemisia tridentata). It produces a cluster of thick, glandular stems with enlarged bases and stout roots, the hairy stems pale whitish or yellowish, often purple-tinged, and up to 17 centimetres (6. 7 in) tall. As a parasite taking its nutrients from a host plant, it lacks leaves and chlorophyll. The inflorescence is a wide array of a few tubular flowers. Each is 2 centimetres (0. 79 in) or 3 centimetres (1. 2 in) long, coated in glandular hairs, and dark-veined pink or purple in color.
Plant Description
Plant Type
Plant Type
Annual herb

6.7 in tall

Wildlife Supported

Butterflies & moths hosted ( 1 likely * ) SHOW ALL

Landscaping Information
Natural Setting
Annual Precipitation: 4.7" - 65.9", Summer Precipitation: 0.42" - 4.37", Coldest Month: 22.8" - 44.8", Hottest Month: 45.1" - 74.8", Humidity: 0.92" - 28.38", Elevation: 2621" - 10959"

Alternative Names
Common Names: Flat-topped Broom-rape

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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