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Isocoma arguta
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Carquinez Goldenbush
( Isocoma arguta )
Isocoma arguta
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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About Carquinez Goldenbush (Isocoma arguta)
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Isocoma arguta
is a rare species of flowering plant in the daisy family known by the common name Carquinez goldenbush. It has been found only in Solano and Contra Costa Counties in California, where it grows in the Sacramento-San Joaquin River Delta. It is a resident of Suisun Marsh. It thrives on alkali flats and other mineral-rich soils.
Isocoma arguta
is a compact subshrub reaching about half a meter-1. 5 feet (20-60 inches) tall and wide with erect, multibranched stems. The hairy stems bear small gray-green, nonfleshy, glandular leaves each less than 2 centimetres (0. 79 in) long.
Isocoma arguta
is a compact subshrub reaching about half a meter-1. 5 feet (20-60 inches) tall and wide with erect, multibranched stems. The hairy stems bear small gray-green, nonfleshy, glandular leaves each less than 2 centimetres (0. 79 in) long. The inflorescences hold clusters of thick, knobby flower heads. Each head is a capsule of layered greenish glandular phyllaries with an array of 10-13 cylindrical, protruding golden yellow disc florets at one end. There are no ray florets.
Plant Description
Plant Type
Shrub
Size
1.6 ft tall
Flower Color
Yellow, Green, Brown
Wildlife Supported
Butterflies & moths hosted ( 3
likely
* )
SHOW ALL
*
Sunflower Moth
Homoeosoma electella
Homoeosoma electella
*
Orange Tortrix Moth
Argyrotaenia franciscana
Argyrotaenia franciscana
*
Dejongia californicus
Dejongia californicus
Landscaping Information
Natural Setting
Climate
Annual Precipitation: 16.7" - 22.0", Summer Precipitation: 0.20" - 0.26", Coldest Month: 47.8" - 48.6", Hottest Month: 72.4" - 73.7", Humidity: 1.55" - 20.16", Elevation: 9" - 248"
Alternative Names
Common Names
: Carquinez Isocoma
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Carquinez Goldenbush
Isocoma arguta
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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