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Poa Confinis is a species of grass




Images of Poa Confinis at google.com

Poa Confinis which is also known by the common names coastline bluegrass and beach bluegrass is a species of grass.

Overview of Poa Confinis

It is native to the coastline of:
• Western North America
• From British Columbia
• To northern California

Here it grows on:
• Beaches
• Dunes
• Other coastal habitat

Description of Poa Confinis

• Poa confinis is a perennial grass.
• It grows in small tufts.
• It has rhizomes and stolons.
• These can grow up to 30 centimeters tall.
• The leaves are narrow.
• The leaves are firm.
• They are rolled along the edges.
• The inflorescence is a small.
• It is rough-haired.
• It is of light brown colored cluster.
• This is a cluster of spikelets.
• The plant is dioecious.

Leaf
– sheath open
– 1/2–2/3 cm
– ligule < 2 mm - obtuse to acute - scabrous - blade 1–2 mm wide - folded - inrolled - upper blade surface generally finely hairy Inflorescence
– generally 1–5 cm
– ovate
– tawny
– branches appressed

Spikelet
– callus glabrous
– diffusely short
– cobwebby
– lemma 2–4.5 mm
– glabrous or sparsely hairy

Flower
– fertile anthers
– 1.5–2 mm
– chromosomes: 2n=42

Lepidoptera whose caterpillars use Poa as its food include:
• Agriphila inquinatella
• Cercyonis pegala
• Poanes hobomok
• Poanes zabulon

Scientific Classification of Poa Confinis

• Kingdom : Plantae
• (unranked) : Angiosperms
• (unranked) : Monocots
• (unranked) : Commelinids
• Order : Poales
• Family : Poaceae
• Genus : Poa
• Species : P. confinis
• Binomial name : Poa confinis

Growing/Caring conditions

• This is an incredibly easily grown plant.
• It succeeds in well-drained soils.
• It prefers moderately fertile soil.
• It grows well in a sunny position.
• It can tolerate very acid soils.
• This plant is a very common garden weed.
• It usually does not require cultivation.
• This is an essential food plant for the caterpillars of numerous species of butterfly.
• It is seen growing in close cut lawns.
• The seed drops very readily in the plant and hence is difficult to harvest.
• But this way the seed is spread effortlessly.
• It makes the flower even more difficult to eradicate.
• A lot of the species are very important pasture plants.
• They are used extensively by grazing livestock.
• Many of the Poa species are popular for gardens as well as for landscaping in New Zealand.





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