Hoffmannseggia glauca

Species category

Weed

Common name

Indian rushpea

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.
to obovateObovate:
Inverted egg shaped with apical end the broadest.

Size

  • Length 4–5 mm
  • Width 2.3–3 mm
  • Thickness 0.8–1 mm

Color

Olive-brown (lighter yellowish-brown adjacent to the hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
and around the margin of the seed).

Texture

Smooth to sandy coated (granularGranular:
Resembling or consisting of small grains or particles.
)

Other structures

Small hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is lateral to the basalBasal:
The base of the fruit or seed opposite the apical end.
point.

Identification notes

With the extended hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
point, the seed shape approaches spatulateSpatulate:
Having a narrow base and rounded apex. Pear-shaped.
. Often, a remnant of the funiculusFuniculus:
The stalk that connects an ovule (seed) to the placenta of the ovary wall.
is present coming from the hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
.

Noxious weed seed categories

State Noxious Weed: Kansas

AOSA examination list

Not included

Nomenclature

Family

Fabaceae

Valid name

Hoffmannseggia glauca (Ortega) Eifert

Synonyms

Hoffmannseggia densiflora Benth.
Hoffmannseggia densiflora Benth. var. capitata Fisher
Hoffmannseggia densiflora Benth. var. demissa (A. Gray) Fisher
Hoffmannseggia densiflora Benth. var. pringlei Fisher
Hoffmannseggia densiflora Benth. var. stricta (Benth.) Fisher
Hoffmannseggia falcaria Cav.

 Hoffmannseggia glauca.  Seeds are smooth to sandy-coated. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Hoffmannseggia glauca. Seeds are smooth to sandy-coated. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.