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Oenothera hispida

Species category

Weed

Common name

Drummond's beeblossom

Diagnostic characters

Planting unit

CapsuleCapsule:
A dry, dehiscent fruit derived from a compound ovary.

Shape

Spatulate 

Size

  • Length 6–7 mm 
  • Width 3.5–4.5 mm 
  • Thickness 3.5–4.5 mm 

Color

Brown

Texture

Dull and woolly

Other structures

The apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
 of the capsuleCapsule:
A dry, dehiscent fruit derived from a compound ovary.
 is pyramidal. The base is cylindrical. The large protruding carpal walls have longitudinal grooves.

Identification notes

CapsuleCapsule:
A dry, dehiscent fruit derived from a compound ovary.
 is square in cross section. Shape is narrow at the base; the ridges enlarge midway, then come to an apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
 point. The structure is an entire fruitFruit:
A mature ovary and any associated parts.
.

Noxious weed seed categories

State Noxious Weed: Hawaii

AOSA examination list

Not included

Nomenclature

Family

Onagraceae

Valid name

Oenothera hispida (Benth.) W. L. Wagner et al.

Synonyms

Gaura drummondii (Spach) Torr. & A. Gray
Oenothera xenogaura W.L. Wagner & Hoch
Schizocarya drummondii Spach

From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida  3. Oenothera gaura.  Dull and woolly capsules.
From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida 3. Oenothera gaura. Dull and woolly capsules.
Oenothera hispida.  The capsule's large protruding carpal walls have longitudinal grooves.
Oenothera hispida. The capsule's large protruding carpal walls have longitudinal grooves.
Oenothera hispida. The apex of the capsule is pyramidal, while the base is cylindrical.
Oenothera hispida. The apex of the capsule is pyramidal, while the base is cylindrical.