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Agrostis humilis
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Mountain Bent Grass
( Agrostis humilis )
Agrostis humilis
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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About Mountain Bent Grass (Agrostis humilis)
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Agrostis humilis
is a species of grass known by the common names of mountain bent grass and alpine bentgrass, which can be found in Western United States and Canada. The plant perennial and caespitose while it culms are 5-10 centimetres (2. 0-3. 9 in) long. The eciliate membrane have a 0. 5-1 millimetre (0. 020-0. 039 in) long ligule which is also both erose and truncate. It have filiformed and flat leaf-blades which are 2-10 centimetres (0. 79-3. 94 in) long and 0. 5-1 millimetre (0. 020-0. 039 in) wide. The panicle is inflorescenced and is 1. 5-2. 5 centimetres (0. 59-0. 98 in) by 0. 5 centimetres (0. 20 in) and is linear with the main branches being appressed. Spikelets are 2 millimetres (0. 079 in) long and are both elliptic and solitary. They also carry both a pediceled fertile spikelet and one fertile floret which have a hairless callus. The glumes are 2 millimetres (0. 079 in) long, lanceolate, membranous and have acute apexes. Fertile lemma is of the same size as glumes and is both elliptic and hyaline. It have hyaline palea which is 0. 66-0. 75 millimetres (0. 026-0. 030 in) long with rhachilla is extended at 0-0. 15 millimetres (0. 0000-0. 0059 in). Flowers are membranous and 0. 3 millimetres (0. 012 in) long with two lodicules. They also have three stamens which are 0. 6-0. 7 millimetres (0. 024-0. 028 in) long with fruits being caryopses, having an additional pericarp and linear. hilum. Threat status. In California, the plant is considered Endangered.
Plant Description
Plant Type
Grasses
Flower Color
Brown
Wildlife Supported
Butterflies & moths hosted ( 4
likely
* )
SHOW ALL
*
Common Ringlet
Coenonympha tullia
Coenonympha tullia
*
Sandhill Skipper
Polites sabuleti
Polites sabuleti
*
Common Roadside-Skipper
Amblyscirtes vialis
Amblyscirtes vialis
*
Armyworm Moth
Mythimna unipuncta
Mythimna unipuncta
Landscaping Information
Natural Setting
Climate
Annual Precipitation: 12.2" - 111.9", Summer Precipitation: 0.87" - 3.90", Coldest Month: 19.5" - 46.6", Hottest Month: 43.3" - 69.3", Humidity: 0.71" - 19.35", Elevation: 2713" - 12226"
Alternative Names
Common Names
: Alpine Bentgrass
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Mountain Bent Grass
Agrostis humilis
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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