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Plantain (Plantago)

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Plantain Genus Details

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These short, herbaceous plants are less than 1 foot tall with a rosette of lance- or ovate-shaped leaves at the base. A flowering spike with small, green to brown flowers grows from the center of the base. About 20 species of the plantain weed are native or naturalized in North America. The flowering season is similar to grasses and occurs during May until November for these wind-pollinated species. Flowering for this weed occurs primarily in May and June which coincides with the most severe portion of the grass pollen shed. Fleawort, P. psyllium, produces medicinal seeds which may cause allergy symptoms if ingested. Rugel's plantain (P. Rugelii) and the common or greater plantain (P. major) are the most common of the other species. Both species have become widely established in open fields and waste areas. These species flower throughout the summer.
English plantain (Plantago lanceolata)
English plantain (Plantago lanceolata)
Plantain (Plantago) genus
Plantain (Plantago) genus

Plantain Allergy Info

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The English plantain (Plantago lanceolata) sheds the most pollen and is most allergenic of the plantains. Plantain pollen is considered by some allergists to be a significant problem, particularly in the eastern coastal states, the Northwest, and California.

Plantain 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
Plantain (Plantago) is a genus of the PLANTAGINACEAE family.
This genus includes the following allergenic species:

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Plantain 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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