Melilotus indicus

Species category

Agricultural

Common name

annual yellow sweetclover, Indian sweet-clover

Diagnostic characters

Planting unit

True seedTrue seed:
A mature fertilized ovule consisting of an embryo, with or without and external food reserve (e.g., endosperm) enclosed by the testa.

Shape

OvalOval:
Broadly elliptic.

Size

  • Length 1.8–2 mm
  • Width 1.4–1.6 mm
  • Thickness 0.9–1 mm

Color

Olive-green

Texture

Roughened by minute tubercles or bumps

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is located near the end of the radicleRadicle:
The rudimentary root of the embryo, developing into the primary root after emergence from the seed coat.
. RadicleRadicle:
The rudimentary root of the embryo, developing into the primary root after emergence from the seed coat.
lobe is parallel with cotyledonCotyledon:
The modified storage leaf or pair of leaves of an embryo and seedling (see primary leaf).
axis, edge view symmetric.

Identification notes

The rough seed coatSeed coat:
The protective covering of a seed usually composed of the inner and outer integuments. Also called the testa.
and dark color are the most significant identification characteristics.

Noxious weed seed categories

Not listed

AOSA examination list

Included

Nomenclature

Family

Fabaceae

Valid name

Melilotus indicus (L.) All.

Synonyms

Melilotus indica (L.) All.

 Melilotus indicus.  Seeds with a rough seed coat and a dark color. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Melilotus indicus. Seeds with a rough seed coat and a dark color. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.