Amsinckia menziesii var. intermedia

Species category

Weed

Common name

common fiddleneck

Diagnostic characters

Planting unit

NutletNutlet:
A small, dry, indehiscent carpel of a fruit, usually composed of one quarter of the fruit with each enclosing a single seed (e.g. mints).

Shape

ObovateObovate:
Inverted egg shaped with apical end the broadest.
to spatulateSpatulate:
Having a narrow base and rounded apex. Pear-shaped.

Size

  • Length: 3 mm
  • Width: 1.5 mm
  • Thickness: 1 mm

Color

Light brown

Texture

Warty

Other structures

Central ridge

Identification notes

NutletsNutlet:
A small, dry, indehiscent carpel of a fruit, usually composed of one quarter of the fruit with each enclosing a single seed (e.g. mints).
are obovateObovate:
Inverted egg shaped with apical end the broadest.
to spatulateSpatulate:
Having a narrow base and rounded apex. Pear-shaped.
in dorsalDorsal:
Upper side or back of a seed or fruit.
view. Surface warty with a central longitudinal ridge. The scar is narrow and about one-half the length of the nutletNutlet:
A small, dry, indehiscent carpel of a fruit, usually composed of one quarter of the fruit with each enclosing a single seed (e.g. mints).
on the ventralVentral:
Adaxial; of the side of an organ facing the axis (compare dorsal).
side.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Boraginaceae

Valid name

Amsinckia menziesii (Lehm.) A. Nelson & J.F. Macbr. var. intermedia (Fisch. & C.A. Mey.) Ganders

Synonyms

Amsinckia arizonica Suksd.
Amsinckia demissa Suksd.
Amsinckia echinata A. Gray
Amsinckia intermedia Fisch. & C.A. Mey.
Amsinckia intactilis J.F. Macbr.
Amsinckia intermedia Fisch. & C.A. Mey. var. echinata (A. Gray) Wiggins
Amsinckia microphylla Suksd.
Amsinckia nana Suksd.
Amsinckia rigida Suksd.

 Amsinckia menziesii  var.  intermedia.  Nutlets are obovate to spatulate in the dorsal view. Surface warty with a central longitudinal ridge. The scar is narrow and about one-half the length of the nutlet on the ventral side.
Amsinckia menziesii var. intermedia. Nutlets are obovate to spatulate in the dorsal view. Surface warty with a central longitudinal ridge. The scar is narrow and about one-half the length of the nutlet on the ventral side.
 Amsinckia menziesii  var.  intermedia . Nutlets in various positions. Photo courtesy of USDA-APHIS-PPQ.
Amsinckia menziesii var. intermedia. Nutlets in various positions. Photo courtesy of USDA-APHIS-PPQ.