Apium graveolens var. rapaceum

Species category

Vegetable

Common name

celeriac

Diagnostic characters

Planting unit

MericarpMericarp:
One-half of a two-sectioned fruit known as a schizocarp (e.g. carrot).

Shape

OvalOval:
Broadly elliptic.
, ellipticElliptic:
Outline of an ellipse; greatest width midway sloping to an equally pointed apex and base.
, with one flat side

Size

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

Color

Yellow ribs with brown interspaces

Texture

Strong longitudinal ribs with rough interspaces

Other structures

ApicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
structure (stylopodium) present.

Identification notes

A mericarpMericarp:
One-half of a two-sectioned fruit known as a schizocarp (e.g. carrot).
is one-half of a fruitFruit:
A mature ovary and any associated parts.
called a schizocarpSchizocarp:
A dry, two-seeded fruit of the carrot family (Apiaceae) that separates at maturity along a midline into two mericarps. Each mericarp has a dry, indehiscent pericarp enclosing a loose fitting seed.
(splitting fruitFruit:
A mature ovary and any associated parts.
). Seeds of this species are very similar to those of Apium graveolus var. dulce.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Apiaceae

Valid name

Apium graveolens L. var. rapaceum (Mill.) Gaudin

Synonyms

Apium rapaceum Mill.

 Apium graveolens  var.  rapaceum.  Apical structure (stylopodium) is present. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Apium graveolens var. rapaceum. Apical structure (stylopodium) is present. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.