Annual Meadow Grass

Poa annua L.

2011 Ryan Batten cc-by-nc-sa-3.0

Poa annua (Annual Meadow Grass) is a species of annual herb in the family true grasses. They have yellow flowers. Individuals can grow to 0.3 feet.

URI: http://purl.obolibrary.org/obo/FLOPO_0980071
Definition: Of plant duration, a plant whose life span ends within one year after germination, e.g. a winter annual germinating in the autumn and flowering in the spring (esp. in Mediterranean climates), approximately synonymous to therophyte, c.f. biennial, ephemeral, perennial, c.f. also of flowering with respect to architecture, hapaxanthic, monocarpic, pleonanthic.
Attribution: Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 12, July 2012. Glossary, http://www.mobot.org/mobot/research/apweb/top/glossarya_h.html#annual

show all records

URI: http://purl.obolibrary.org/obo/FLOPO_0022142
Definition: whole plant herbaceous

show all records

URI: http://purl.obolibrary.org/obo/PATO_0000324
Definition: A color hue with medium wavelength of that portion of the visible spectrum lying between orange and green, evoked in the human observer by radiant energy with wavelengths of approximately 570 to 590 nanometers.
Attribution: [database_cross_reference: Dictionary:http://dictionary.reference.com/]

show all records

EOL has data for 76 attributes, including:

after harvest regrowth rate
- URI: http://eol.org/schema/terms/AfterHarvestRegrowthRate
- Definition: Indicates the relative rate of regrowth of a herbaceous plant after a harvest of above ground herbage.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
show all records
moderate
- URI: http://eol.org/schema/terms/moderateRate
- Definition: Moderate rate. A rate which is neither relatively high nor low.
show all records
anaerobic soil tolerance
- URI: http://eol.org/schema/terms/AnaerobicSoilTolerance
- Definition: The relative tolerance of the plant to anaerobic soil conditions.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
show all records
low tolerance
- URI: http://purl.obolibrary.org/obo/PATO_0002394
- Definition: decreased tolerance to: A tolerance quality inhering in a bearer by virtue of the bearer's decreased ability to endure a stimulus.
show all records
has dispersal vector
- URI: http://eol.org/schema/terms/HasDispersalVector
- Definition: which agent of biological dispersal moves a dispersal unit, or organism, away from its birth population to another location or population in which the individual will reproduce.
- Attribution: https://en.wikipedia.org/wiki/Dispersal_vector
show all records
zoochory
- URI: http://eol.org/schema/terms/zoochory
- Definition: Seed dispersal mediated by animals.
- Attribution: http://www.uv.es/jgpausas/brot.htm
show all records
bloom period
- URI: http://eol.org/schema/terms/BloomPeriod
- Definition: The seasonal period in the U.S. during which the plant blooms the most. The bloom period is defined as the time when pollen is shed and stigmas are receptive.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
show all records
mid spring
- URI: http://eol.org/schema/terms/midSpring
- Definition: The mid part of the season between the vernal equinox and the summer solstice.
show all records
calcareous soil tolerance
- URI: http://eol.org/schema/terms/CalcareousSoilTolerance
- Definition: The relative tolerance of the plant to calcareous soil. Calcareous soil is defined as soil containing sufficient free CaCO3 and other carbonates to effervesce visibly or audibly when treated with cold 0.1M HCl. These soils usually contain from 10 to almost 1000g/kg CaCO3 equivalent.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
show all records
medium (normal)
- URI: http://purl.obolibrary.org/obo/PATO_0000461
- Definition: Average. A quality inhering in a bearer by virtue of the bearer's exhibiting no deviation from normal or average.
- Attribution: [database_cross_reference: PATOC:GVG]
show all records
fire resistance
- URI: http://eol.org/schema/terms/FireResistance
- Definition: The ability of an organism to resist burning.
- Comment: If a plant can carry a fire—and most can—it is scored as "not fire resistant" in the USDA PLANTS database where this characteristic is evaluated with reference to problem fires in California. http://plants.usda.gov/charinfo.html
show all records
yes
- URI: http://eol.org/schema/terms/yes
- Definition: This statement is true; the answer to this question is yes.
show all records
fire tolerance
- URI: http://eol.org/schema/terms/FireTolerance
- Definition: The relative ability of a plant to resprout, regrow, or reestablish from residual seed after a fire.
- Attribution: USDA PLANTS database Characteristics Data Fields (Fire tolerance). http://plants.usda.gov/charinfo.html
show all records
low tolerance
- URI: http://purl.obolibrary.org/obo/PATO_0002394
- Definition: decreased tolerance to: A tolerance quality inhering in a bearer by virtue of the bearer's decreased ability to endure a stimulus.
show all records
fruit or seed color
- URI: http://eol.org/schema/terms/FruitSeedColor
- Definition: The predominant and conspicuous color of the mature fruit or seed from a landscaping aesthetics standpoint.
- Attribution: USDA Plants database. Characteristics Data Fields. http://plants.usda.gov/charinfo.html
show all records
brown
- URI: http://purl.obolibrary.org/obo/PATO_0000952
- Definition: A color consisting of dark orange, red, of very low intensity.
- Attribution: [database_cross_reference: Wikipedia:http://en.wikipedia.org/wiki/Brown]
show all records
optimal growth pH
- URI: http://eol.org/schema/terms/OptimalGrowthpH
- Definition: The pH of a medium (water column, soil moisture) at which the growth rate of an organism is typically optimized
show all records
6.5
optimal growth temperature
- URI: http://eol.org/schema/terms/OptimalGrowthTemperature
- Definition: Optimal temperature conditions for cell division
- Attribution: Created by Anne Thessen
show all records
22 degrees celsius
post-fire seedling emergence
- URI: http://eol.org/schema/terms/PostFireSeedlingEmergence
- Definition: Seedling density per pre-fire mature individuals emerging during the first year after fire (seedlings/mature).
- Attribution: BROT trait database. Traits: units and categories (SeedlEmerg), http://www.uv.es/jgpausas/brot.htm
show all records
none
- URI: http://purl.bioontology.org/ontology/SNOMEDCT/260413007
show all records
precipitation tolerance
- URI: http://eol.org/schema/terms/PrecipitationTolerance
- Definition: Minimum tolerable rainfall (in inches), expressed as the average annual minimum precipitation that occurs 20% of the time (i.e., the probability of it being this dry in any given year is 20%) at the driest climate station within the known geographical range of the plant. geographical range of the plant. For cultivars, the geographical range is defined as the area to which the cultivar is well adapted rather than marginally adapted.
- Comment: Minimum precipitation tolerance: Minimum tolerable rainfall, expressed as the average annual minimum precipitation that occurs 20% of the time (i.e., the probability of it being this dry in any given year is 20%) at the driest climate station within the known geographical range of the plant. Maximum precipitation tolerance: Maximum tolerable rainfall, expressed as the annual average precipitation of the wettest climate station within the known geographical range of the plant. For cultivars, the geographical range is defined as the area to which the cultivar is well adapted rather than marginally adapted.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
show all records
60 inch

Known occurrences, collected specimens and observations of Annual Meadow Grass from the Global Biodiversity Information Facility

GBIF provides free and open access to biodiversity data. View this species on GBIF

2011 Ryan Batten cc-by-nc-sa-3.0