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Calistoga Popcornflower
Plagiobothrys strictus
  
About Calistoga Popcornflower (Plagiobothrys strictus) 0 Nurseries Carry This Plant Plagiobothrys strictus is a rare species of flowering plant in the borage family known by the common name Calistoga popcornflower. It is endemic to Napa County, California, where it is known from only two small locations near Calistoga. It grows in wet grassy habitat kept moist by runoff from hot springs and pools. The combined area of land containing the two populations was estimated to be less than 80 square meters in 1990. The species is threatened by the disturbance of its grassland habitat; both populations are on privately owned, unprotected land, one next to a small airport. This is an annual herb growing erect 10 to 40 centimeters tall. It is mostly hairless except for the sepals, which have some rough hairs. The leaves are located along the stem and measure 4 to 9 centimeters long. The inflorescence is made up of paired branches bearing several five-lobed white flowers each about half a centimeter wide. The fruit is a ribbed nutlet 1 or 2 millimeters long. Distribution and habitat. It grows in wet grassy habitat kept moist by runoff from hot springs and pools. The combined area of land containing the two populations was estimated to be less than 80 square meters in 1990. The species is threatened by the disturbance of its grassland habitat; both populations are on privately owned, unprotected land, one next to a small airport. Endangered status. Plagiobothrys strictus is a federally listed endangered species of the United States.
Plant Description
Plant Type
Plant Type
Annual herb

Size
Size
0.33 - 1.3 ft tall

Flower Color
Flower Color
White

Wildlife Supported
 


 
Butterflies & moths hosted ( 1 likely * ) SHOW ALL
*
Ethmia plagiobothrae Image
Ethmia plagiobothraeEthmia plagiobothrae

Landscaping Information
Natural Setting
Climate
Climate
Annual Precipitation: 29.0" - 53.5", Summer Precipitation: 0.39" - 0.63", Coldest Month: 42.8" - 46.7", Hottest Month: 66.1" - 74.3", Humidity: 1.11" - 22.43", Elevation: 201" - 1502"


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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