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Family

Genus

Common name

Noxious Weed Seed

AOSA Examination List

Species Category

Disseminule/Planting Unit

Shape

Seed length

Seed width

Seed thickness

Color

Texture

Other structures

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Asclepias tuberosa. Spatulate true seeds with winged margins.

Asclepias tuberosa
Asclepias tuberosa. Spatulate true seeds with winged margins.

Asclepias tuberosa. Spatulate true seeds with winged margins.

Asclepias tuberosa
Asclepias tuberosa. Spatulate true seeds with winged margins.

Asparagus aethiopicus. Globose, reticulated true seeds with white hilum.

Asparagus aethiopicus
Asparagus aethiopicus. Globose, reticulated true seeds with white hilum.

Asparagus officinalis. Globose true seeds with a smooth, not shiny surface.

Asparagus officinalis
Asparagus officinalis. Globose true seeds with a smooth, not shiny surface.

Asperugo procumbens. Tubercles are irregular and totally cover the seed surface.

Asperugo procumbens
Asperugo procumbens. Tubercles are irregular and totally cover the seed surface.

Comparison of Aspergo procumbens and Melissa officinalis. Photo by Michael K. Kirkpatrick, USDA-APHIS-PPQ.

Asperugo procumbens
Comparison of Aspergo procumbens and Melissa officinalis. Photo by Michael K. Kirkpatrick, USDA-APHIS-PPQ.

Asphodelus fistulosus. Ventral view (top) and lateral view (bottom) of seeds.

Asphodelus fistulosus
Asphodelus fistulosus. Ventral view (top) and lateral view (bottom) of seeds.

Asphodelus fistulosus. Ventral view (top) and lateral view (bottom) of seeds.Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus
Asphodelus fistulosus. Ventral view (top) and lateral view (bottom) of seeds.Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus. Dorsal view of seeds. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus
Asphodelus fistulosus. Dorsal view of seeds. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus. Capsule (dehisced, seeds released).Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus
Asphodelus fistulosus. Capsule (dehisced, seeds released).Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus. Capsule (dehisced, seeds released).Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus
Asphodelus fistulosus. Capsule (dehisced, seeds released).Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus. Seeds. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus
Asphodelus fistulosus. Seeds. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus. Surface view. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus
Asphodelus fistulosus. Surface view. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus tenifolius (syn). Ventral view (top) and lateral view (bottom) of seeds. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus
Asphodelus tenifolius (syn). Ventral view (top) and lateral view (bottom) of seeds. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus tenifolius (syn). Dorsal view of seeds. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus
Asphodelus tenifolius (syn). Dorsal view of seeds. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus tenufolius (syn). Surface view. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus
Asphodelus tenufolius (syn). Surface view. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus tenifolius (syn). Seed. Photo by Julia Scher, USDA-APHIS-PPQ.

Asphodelus fistulosus
Asphodelus tenifolius (syn). Seed. Photo by Julia Scher, USDA-APHIS-PPQ.

Astragalus bisulcatus. Oval to mitten-shaped true seeds. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.

Astragalus bisulcatus
Astragalus bisulcatus. Oval to mitten-shaped true seeds. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.

Astragalus canadensis. True seed, oval to mitten-shaped with a marginal cleft.

Astragalus canadensis
Astragalus canadensis. True seed, oval to mitten-shaped with a marginal cleft.

Astragalus cicer. Color lighter on the lateral sides of the hilum.

Astragalus cicer
Astragalus cicer. Color lighter on the lateral sides of the hilum.

Astragalus cicer. Radicle lobes are stubby and somewhat squared off at the ends.

Astragalus cicer
Astragalus cicer. Radicle lobes are stubby and somewhat squared off at the ends.

Astragalus cicer. Oval to mitten-shaped with divergent radicle.

Astragalus cicer
Astragalus cicer. Oval to mitten-shaped with divergent radicle.

Astragalus cicer. Collar is gray to green (sometimes ashy-cream), and light brown to light black. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.

Astragalus cicer
Astragalus cicer. Collar is gray to green (sometimes ashy-cream), and light brown to light black. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.

Astragalus miser. Radicle lobe adjacent to cotyledon lobe.

Astragalus miser
Astragalus miser. Radicle lobe adjacent to cotyledon lobe.

Astragalus miser. Irregular seed shape.

Astragalus miser
Astragalus miser. Irregular seed shape.

Astragalus mongholicus. Mitten-shaped true seed with some surface flaking.

Astragalus mongholicus
Astragalus mongholicus. Mitten-shaped true seed with some surface flaking.

Astragalus pectinatus. True seed with a wavy, smooth to irregular pitted texture. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.

Astragalus pectinatus
Astragalus pectinatus. True seed with a wavy, smooth to irregular pitted texture. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.

Silene compacta. Reinform shaped true seed with tuberculate texture.

Atocion compactum
Silene compacta. Reinform shaped true seed with tuberculate texture.

Atriplex canescens. Obovate, four-sided winged utricle.

Atriplex canescens
Atriplex canescens. Obovate, four-sided winged utricle.

Atriplex gardneri. Utrilce with a pointed top and two slender styles.

Atriplex gardneri
Atriplex gardneri. Utrilce with a pointed top and two slender styles.

Aubrieta deltoidea. True seed is very irregularly shaped with ridges around flat surfaces.

Aubrieta deltoidea
Aubrieta deltoidea. True seed is very irregularly shaped with ridges around flat surfaces.

Aurinia saxatilis. Discoid true seed with persistent remnant of the style often connected to hilum. Circumferential wing either brown or transparent.

Aurinia saxatilis
Aurinia saxatilis. Discoid true seed with persistent remnant of the style often connected to hilum. Circumferential wing either brown or transparent.

Aurinia saxatilis. Discoid true seed with a persistent remnant of the style often connected to the hilum.

Aurinia saxatilis
Aurinia saxatilis. Discoid true seed with a persistent remnant of the style often connected to the hilum.

Avena barbata. The bend in the geniculate awn is well above the tip of the lemma.

Avena barbata
Avena barbata. The bend in the geniculate awn is well above the tip of the lemma.

Avena barbata. Callus from complete abscission. Photo by Julia Scher, USDA-APHIS-PPQ.

Avena barbata
Avena barbata. Callus from complete abscission. Photo by Julia Scher, USDA-APHIS-PPQ.

Avena barbata. Photo by Julia Scher, USDA-APHIS-PPQ.

Avena barbata
Avena barbata. Photo by Julia Scher, USDA-APHIS-PPQ.

Avena barbata. Photo by Julia Scher, USDA-APHIS-PPQ.

Avena barbata
Avena barbata. Photo by Julia Scher, USDA-APHIS-PPQ.

Avena fatua. Lemma with lighter veins.

Avena fatua
Avena fatua. Lemma with lighter veins.

Avena fatua. Lemma is mostly hairless. Photo by Julia Scher, USDA-APHIS-PPQ.

Avena fatua
Avena fatua. Lemma is mostly hairless. Photo by Julia Scher, USDA-APHIS-PPQ.

Avena fatua. Photo by Julia Scher, USDA-APHIS-PPQ.

Avena fatua
Avena fatua. Photo by Julia Scher, USDA-APHIS-PPQ.

SeedImages