Poa bulbosa

Species category

Agricultural

Common name

bulbous bluegrass

Diagnostic characters

Planting unit

BulbletsBulblet:
A small, vegetatively-produced bulb that can function reproductively as a seed (e.g., Allium spp. and Poa bulbosa).

Shape

OvateOvate:
Egg-shaped with basal end the broadest.

Size

  • Length 2–4 mm 
  • Width 1–1.5 mm 
  • Thickness 1–1.5 mm 

Color

Dark brown bulb with yellow longitudinal lines

Texture

Smooth and scaly

Lemma

None

Palea

None

Other structures

Residual stem structure present at apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
.

Identification notes

This is a vegetative structure and not derived from a flower. Its function is similar to that of an onion bulb. Yet it is sown much the same as a seed or floretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
.

Noxious weed seed categories

Not listed

AOSA examination list

Included

Nomenclature

Family

Poaceae

Valid name

Poa bulbosa L.

 Poa bulbosa.  Bulblets are vegetative structures and not derived from a flower.
Poa bulbosa. Bulblets are vegetative structures and not derived from a flower.