Needle Grass, Porcupine Grass (Hesperostipa)
Needle Grass, Porcupine Grass Genus Details
Needle grass is native to hillsides and prairies in central North America. It is clump forming, upright and grows to 3 feet tall when flowering. Needle grass is remarkable for the flowing, bristle-like appendages, called awns, which reach up to 8" long. Threadlike and translucent, they shimmer and sparkle in the sun as breezes blow across the prairie. Needle grass is easy to grow in full sun on most soils of average moisture.
Needle Grass, Porcupine Grass Allergy Info
Although the grass family in general is considered significant allergenically, this genus is not typically considered to be problematic.
Needle Grass, Porcupine Grass Pollen Description
Grains are spheroidal to ovoidal, sometimes elliptical. The exine is thin and the surface is granular to finely reticuloid. Poaceae apertures are 1-porate, with the pores usually circular to ovoidal.
Grains are 22-122 micrometers in diameter.
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This plant belongs to the grass family. All pollen grains in this family are similar to the Poaceae (grass) grain pictured here. Herb. MIN
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This plant belongs to the grass family. All pollen grains in this family are similar to the Poaceae (grass) grains pictured here. Herb. MIN
Species in This Genus
Allergenicity Legend:
Mild Allergen |
Moderate Allergen |
Severe Allergen |
Allergy Test Available
Mild Allergen |
Moderate Allergen |
Severe Allergen |
Allergy Test Available
Needle Grass, Porcupine Grass (Hesperostipa) is a genus of the POACEAE family.
This genus includes the following allergenic species:
This genus includes the following allergenic species:
