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Intermountain Milkwort
Polygala intermontana
About Intermountain Milkwort (Polygala intermontana) 0 Nurseries Carry This Plant Polygala intermontana is a species of flowering plant in the milkwort family known by the common name Intermountain milkwort. It is native to the southwestern United States from Utah to northern Arizona and far eastern California, where it grows in desert scrub and woodland habitat. It is a small shrub growing erect or forming tangled, mats of thorny, highly branched stems. The stems are hairy in texture with white fibers. The sparse leaves are linear to oval in shape. The inflorescence bears one to seven flowers, each just a few millimeters in length. The flower has a winglike pair of greenish or whitish sepals and a keeled central petal that lacks the beaked tip of other Polygala species.
Plant Description
Plant Type
Plant Type
Perennial Herb, Shrub

3.3 ft tall

Flower Color
Flower Color
White, Green

Landscaping Information
Natural Setting
Annual Precipitation: 6.1" - 18.0", Summer Precipitation: 0.92" - 2.37", Coldest Month: 26.2" - 46.5", Hottest Month: 45.0" - 78.4", Humidity: 2.02" - 30.26", Elevation: 3093" - 10164"

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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