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Poa douglasii
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Sand Dune Blue Grass
( Poa douglasii )
Poa douglasii
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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About Sand Dune Blue Grass (Poa douglasii)
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Poa douglasii
is a species of grass known by the common names Douglas' bluegrass and sand dune bluegrass. It is endemic to the coastline of California, where it grows in shifting sand dunes. It can be found mostly along the Central Coast and Channel Islands, and occasionally on the North Coast north of Mendocino. It is a perennial grass growing small, dense clumps up to about 30 centimeters in maximum height. It grows from a network of long rhizomes and stolons that anchor the grass to its loose sandy substrate; this network may be up to one meter long. The inflorescence is a dense, oval-shaped series of overlapping spikelets. The grass is dioecious, with male and female individuals producing different types of flowers in their inflorescences. This species, like many sand-dune endemic plants, is threatened by invasive species.
Plant Description
Plant Type
Grasses
Size
11.8 in tall
Flower Color
Brown
Wildlife Supported
Butterflies & moths hosted ( 15
likely
* )
SHOW ALL
*
Juba Skipper
Hesperia juba
Hesperia juba
*
Common Ringlet
Coenonympha tullia
Coenonympha tullia
*
Great Basin Wood-Nymph
Cercyonis sthenele
Cercyonis sthenele
*
Common Wood Nymph
Cercyonis pegala
Cercyonis pegala
*
Common Roadside-Skipper
Amblyscirtes vialis
Amblyscirtes vialis
*
Small Wood-Nymph
Cercyonis oetus
Cercyonis oetus
*
Sachem
Atalopedes campestris
Atalopedes campestris
Landscaping Information
Natural Setting
Climate
Annual Precipitation: 9.4" - 75.0", Summer Precipitation: 0.15" - 2.75", Coldest Month: 40.6" - 54.6", Hottest Month: 55.6" - 75.9", Humidity: 0.09" - 23.92", Elevation: 2" - 5972"
Alternative Names
Common Names
: Douglas Bluegrass, Douglas' Bluegrass, Maritime Bluegrass, Sand Dune Bluegrass
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Sand Dune Blue Grass
Poa douglasii
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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