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Toxicoscordion venenosus

Species category

Weed

Common name

meadow deathcamas

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

Irregularly obovate

Size

  • Length 4–5 mm
  • Width 1.5–1.7 mm
  • Thickness 1–1.2 mm

Color

Olive-brown

Texture

Minutely reticulate

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is obscure, surface very irregular.

Identification notes

Seeds are mostly light brown but contain some green also. Shape is linear but highly irregular longitudinally. HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is assumed to be at the most pointed end.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

>Melanthiaceae

Valid name

Toxicoscordion venenosus (S. Watson) Rydb.

Synonyms

Zigadenus venenosus S. Watson

Zigadenus venosus var. venosus . True seeds that are light brown but contain some green.
Zigadenus venosus var. venosus. True seeds that are light brown but contain some green.
Zigadenus venosus var. venosus . True seeds that are light brown but contain some green.
Zigadenus venosus var. venosus. True seeds that are light brown but contain some green.