Orobanche ramosa | SeedImages

Species category

Weed

Common name

hemp broomrape, branched broomrape

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 0.2–0.4 mm
Width 0.2–0.3 mm
Thickness 0.2–0.3 mm

Color

Light brown

Texture

Reticulations, deep with irregular interspaces

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is on narrow end.

Identification notes

Seed somewhat irregular in shape; this is also the case for the reticulations.

Noxious weed seed categories

State Noxious Weed: Arizona, California

All species of Orobanche are regulated as plant pests under 7 CFR 330, but not all species are listed on the federal noxious weed list. Learn more about Orobanche spp. and Phelipanche spp. on ITP's Federal Noxious Weed Disseminules tool.

AOSA examination list

Not included

More information

For more information, see ISMA fact sheet, Orobanche and Phelipanche spp.

Nomenclature

Family

Orobanchaceae

Valid name

Orobanche ramosa L.

Orobanche ramosa. Seeds with deep reticulations with irregular interspaces. Photo by Julia Scher, USDA-APHIS-PPQ.	Orobanche ramosa. The seeds are somewhat irregular in shape, and this is also the case for the reticulations. Photo by Julia Scher, USDA-APHIS-PPQ.
Orobanche ramosa. Seeds with deep reticulations.	Orobanche ramosa. Seed capsules. Photo by Julia Scher, USDA-APHIS-PPQ.