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Shoreweed (Littorella)

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Home « Littorella

Shoreweed Genus Details

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Shoreweed is a member of the Plantaginaceae (plantain) family. It is found in temperate climates and has a simple basal leaf structure. The leaves are prominently ribbed and have winged perioles. The flowers, borne on leafless flowering stalks, are composed of 4 sepals, 4 petals, 2-4 stamens and a single style. The fruit is a capsule whose top falls off at maturity. The seeds of shoreweed are sticky when wet.

Shoreweed Allergy Info

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This genus is not commonly cited as a source of allergy.

Shoreweed Pollen Description

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Pollen grains are spheroidal and pantoporate; the 3-10 pores circular to slightly lalongate. The sexine is scabrate with an undulating and densely granular surface.
Grains are 26-31 micrometers in diameter.
Plantago genus, single grain. Herb. MIN
Plantago genus, single grain. Herb. MIN
Plantago genus, multiple grains. Herb. MIN
Plantago genus, multiple grains. Herb. MIN

Species in This Genus

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Allergenicity Legend:
Mild Allergen Mild Allergen  |  Moderate Allergen Moderate Allergen  |  Severe Allergen Severe Allergen  |  Allergy Test Allergy Test Available
Shoreweed (Littorella) is a genus of the PLANTAGINACEAE family.
This genus includes the following allergenic species:

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Shoreweed Genus Location

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The shaded areas on the map indicates where the genus has been observed in the United States. Click the map to see a full scale version of these allergy areas.
  - Native, observed in a county
  - Introduced, observed in a county
  - Rarely observed

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