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Ledge Stonecrop
Rhodiola integrifolia
  
About Ledge Stonecrop (Rhodiola integrifolia) 0 Nurseries Carry This Plant Rhodiola integrifolia is a species of flowering plant in the stonecrop family known by the common names ledge stonecrop, western roseroot, and king's crown. It is native to north-easternmost Russia, including Kamchatka, and western North America, where it grows in mountainous habitat in subalpine and alpine climates, including meadows, cliffs, and talus. It is a perennial herb producing a stout stem from a fleshy, branching caudex, reaching a maximum height near 30 centimeters. The fleshy leaves are alternately arranged on the stem, widely lance-shaped to oval and pointed, flat but upcurved toward the tip, reaching 2. 5 centimeters long. They are green when new and age to orange, rose, or red. The inflorescence is a dense cyme of up to 50 flowers with fleshy petals in shades of bright red to deep purple. There are several subspecies of this plant, with one, ssp. leedyi, very rare and limited to a few populations in Minnesota and upstate New York. This subspecies is considered a relict from times when its range was covered in glaciers; it survives on barren cliffs which are kept cold by air blowing through cracks from subterranean caves. It is treated as a federally listed threatened species in the United States.
Plant Description
Plant Type
Plant Type
Perennial herb, Succulent

Size
Size
1 ft tall

Flower Color
Flower Color
Orange, Green, Purple, Red

Landscaping Information
Sun
Sun
Full Sun

Sunset Zones
Sunset Zones?
1, 2, 4, 5, 6, 7, 15, 16, 17

Natural Setting
Site Type
Site Type
Cliffs, talus, ridges

Climate
Climate
Annual Precipitation: 12.8" - 100.3", Summer Precipitation: 0.93" - 3.60", Coldest Month: 18.1" - 42.8", Hottest Month: 38.5" - 65.0", Humidity: 0.97" - 16.82", Elevation: 2122" - 13497"

Alternative Names
Common Names: King's Crown, Roseroot Stonecrop, Western Roseroot


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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