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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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Eriochloa aristata.  Spikelets with a dense covering of appressed hairs. Eriochloa aristata. Spikelets with a dense covering of appressed hairs.
Eriochloa aristata
Eriochloa aristata. Spikelets with a dense covering of appressed hairs.
From Left to Right: 1. Eriochloa aristata 2. Eriochloa punctata . Spikelets with a knob-like structure on the base. From Left to Right: 1. Eriochloa aristata 2. Eriochloa punctata. Spikelets with a knob-like structure on the base.
Eriochloa aristata
From Left to Right: 1. Eriochloa aristata 2. Eriochloa punctata. Spikelets with a knob-like structure on the base.
From Left to Right: 1. Eriochloa punctata 2. Eriochloa aristata . Spikelets with a dense covering of appressed hairs.  From Left to Right: 1. Eriochloa punctata 2. Eriochloa aristata . Spikelets with a dense covering of appressed hairs. 
Eriochloa aristata
From Left to Right: 1. Eriochloa punctata 2. Eriochloa aristata . Spikelets with a dense covering of appressed hairs. 
From Left to Right: 1. Eriochloa punctata 2. Eriochloa aristata . Spikelets with a knob-like structure at the base.  From Left to Right: 1. Eriochloa punctata 2. Eriochloa aristata. Spikelets with a knob-like structure at the base. 
Eriochloa punctata
From Left to Right: 1. Eriochloa punctata 2. Eriochloa aristata. Spikelets with a knob-like structure at the base. 

From Left to Right: 1: Eriochloa aristata 2. Eriochloa punctata . Spikelets with sparse, appressed hairs on the surface of the second glume and the lemma. From Left to Right: 1: Eriochloa aristata 2. Eriochloa punctata. Spikelets with sparse, appressed hairs on the surface of the second glume and the lemma.
Eriochloa punctata
From Left to Right: 1: Eriochloa aristata 2. Eriochloa punctata. Spikelets with sparse, appressed hairs on the surface of the second glume and the lemma.
Eriogonum fasciculatum. Achenes that often have the calyx and corolla fragments are attached. Eriogonum fasciculatum. Achenes that often have the calyx and corolla fragments are attached.
Eriogonum fasciculatum
Eriogonum fasciculatum. Achenes that often have the calyx and corolla fragments are attached.
Eriogonum umbellatum. Achenes often have the calyx and corolla fragments attached. Eriogonum umbellatum. Achenes often have the calyx and corolla fragments attached.
Eriogonum umbellatum
Eriogonum umbellatum. Achenes often have the calyx and corolla fragments attached.
Erodium cicutarium. Achenes with a long, spirally twisted beak with a terminal straight segment. Erodium cicutarium. Achenes with a long, spirally twisted beak with a terminal straight segment.
Erodium cicutarium
Erodium cicutarium. Achenes with a long, spirally twisted beak with a terminal straight segment.

Erodium cicutarium Lateral view of fruit. Lateral views of two mericarp bodies showing the glabrous furrow below the pits. Photo courtesy of USDA-APHIS-PPQ. Erodium cicutarium Lateral view of fruit. Lateral views of two mericarp bodies showing the glabrous furrow below the pits. Photo courtesy of USDA-APHIS-PPQ.
Erodium cicutarium
Erodium cicutarium Lateral view of fruit. Lateral views of two mericarp bodies showing the glabrous furrow below the pits. Photo courtesy of USDA-APHIS-PPQ.
Erucastrum gallicum. Seeds with an irregularly reticulated surface. Erucastrum gallicum. Seeds with an irregularly reticulated surface.
Erucastrum gallicum
Erucastrum gallicum. Seeds with an irregularly reticulated surface.
Eryngium foetidum. Mericarps with tubercles that are white at the apex and brown at the base. Eryngium foetidum. Mericarps with tubercles that are white at the apex and brown at the base.
Eryngium foetidum
Eryngium foetidum. Mericarps with tubercles that are white at the apex and brown at the base.
Eryngium yuccifolium. Mericarps with a cup-like apical end are surrounded by scales. Eryngium yuccifolium. Mericarps with a cup-like apical end are surrounded by scales.
Eryngium yuccifolium
Eryngium yuccifolium. Mericarps with a cup-like apical end are surrounded by scales.

Eryngium yuccifolium. Mericarps with dorsal and lateral sides with coarse scales. Eryngium yuccifolium. Mericarps with dorsal and lateral sides with coarse scales.
Eryngium yuccifolium
Eryngium yuccifolium. Mericarps with dorsal and lateral sides with coarse scales.
Erysimum capitatum. Seeds with a groove on the sides separating the cotyledon and radicle lobes. Erysimum capitatum. Seeds with a groove on the sides separating the cotyledon and radicle lobes.
Erysimum capitatum
Erysimum capitatum. Seeds with a groove on the sides separating the cotyledon and radicle lobes.
Erysimum capitatum. Seeds with a large developed hilum on the basal end. Erysimum capitatum. Seeds with a large developed hilum on the basal end.
Erysimum capitatum
Erysimum capitatum. Seeds with a large developed hilum on the basal end.
Erysimum cheiri. Seeds with a large developed hilum on the basal end. Erysimum cheiri. Seeds with a large developed hilum on the basal end.
Erysimum cheiri
Erysimum cheiri. Seeds with a large developed hilum on the basal end.

Erysimum cheiri.  Multiple views of seed. Photo courtesy of USDA-APHIS-PPQ. Erysimum cheiri. Multiple views of seed. Photo courtesy of USDA-APHIS-PPQ.
Erysimum cheiri
Erysimum cheiri. Multiple views of seed. Photo courtesy of USDA-APHIS-PPQ.
Erysimum hieraciifolium. Seeds with a groove on the sides separating the cotyledon and radicle lobes, and additional longitudinal grooves are present. Erysimum hieraciifolium. Seeds with a groove on the sides separating the cotyledon and radicle lobes, and additional longitudinal grooves are present.
Erysimum hieraciifolium
Erysimum hieraciifolium. Seeds with a groove on the sides separating the cotyledon and radicle lobes, and additional longitudinal grooves are present.
Erysimum repandum. Finely reticulated seeds with a longitudinal groove separating the radicle and cotyledon lobes.  Erysimum repandum. Finely reticulated seeds with a longitudinal groove separating the radicle and cotyledon lobes. 
Erysimum repandum
Erysimum repandum. Finely reticulated seeds with a longitudinal groove separating the radicle and cotyledon lobes. 
Erythrostemon gilliesii. Seeds are compressed, with the center being more deeply compressed. Erythrostemon gilliesii. Seeds are compressed, with the center being more deeply compressed.
Erythrostemon gilliesii
Erythrostemon gilliesii. Seeds are compressed, with the center being more deeply compressed.

Eschscholzia caespitosa. Seeds are covered with sponge-like tubercles. Eschscholzia caespitosa. Seeds are covered with sponge-like tubercles.
Eschscholzia caespitosa
Eschscholzia caespitosa. Seeds are covered with sponge-like tubercles.
Eschscholzia caespitosa. Seeds are covered with sponge-like tubercles. Eschscholzia caespitosa. Seeds are covered with sponge-like tubercles.
Eschscholzia caespitosa
Eschscholzia caespitosa. Seeds are covered with sponge-like tubercles.
Eschscholzia californica ssp. californica. Seeds with brown reticulations that have black coloring between the reticulations. Eschscholzia californica ssp. californica. Seeds with brown reticulations that have black coloring between the reticulations.
Eschscholzia californica subsp. californica
Eschscholzia californica ssp. californica. Seeds with brown reticulations that have black coloring between the reticulations.
Eschscholzia californica ssp. californica. Seeds with stipples. Eschscholzia californica ssp. californica. Seeds with stipples.
Eschscholzia californica subsp. californica
Eschscholzia californica ssp. californica. Seeds with stipples.

Eschscholzia californica ssp. californica . Seeds with stipples. Eschscholzia californica ssp. californica. Seeds with stipples.
Eschscholzia californica subsp. californica
Eschscholzia californica ssp. californica. Seeds with stipples.
Eschscholzia californica ssp . californica. Seeds with stipples. Eschscholzia californica ssp. californica. Seeds with stipples.
Eschscholzia californica subsp. californica
Eschscholzia californica ssp. californica. Seeds with stipples.
Eschscholzia californica ssp . californica.  Seeds with a raphe-like line from the base to the apex. Eschscholzia californica ssp. californica. Seeds with a raphe-like line from the base to the apex.
Eschscholzia californica subsp. californica
Eschscholzia californica ssp. californica. Seeds with a raphe-like line from the base to the apex.
Eschscholzia californica  ssp. mexicana. Seeds with intense stippling. Eschscholzia californica ssp. mexicana. Seeds with intense stippling.
Eschscholzia californica subsp. mexicana
Eschscholzia californica ssp. mexicana. Seeds with intense stippling.

Eschscholzia lemmonii ssp. kernensis. Seeds with a raphe-like ridge from the base to the apex. Eschscholzia lemmonii ssp. kernensis. Seeds with a raphe-like ridge from the base to the apex.
Eschscholzia lemmonii subsp. kernensis
Eschscholzia lemmonii ssp. kernensis. Seeds with a raphe-like ridge from the base to the apex.
Eucalyptus gunnii. Irregularly sized seeds with white by the hilum. Eucalyptus gunnii. Irregularly sized seeds with white by the hilum.
Eucalyptus gunnii
Eucalyptus gunnii. Irregularly sized seeds with white by the hilum.
Eupatorium perfoliatum. Achenes with four strong longitudinal ribs. Eupatorium perfoliatum. Achenes with four strong longitudinal ribs.
Eupatorium perfoliatum
Eupatorium perfoliatum. Achenes with four strong longitudinal ribs.
Euphorbia corollata. Achenes with colors of various intensities from dark brown to near white. Euphorbia corollata. Achenes with colors of various intensities from dark brown to near white.
Euphorbia corollata
Euphorbia corollata. Achenes with colors of various intensities from dark brown to near white.

Euphorbia cyparissias. Seeds with a caruncle that may cover the hilum. Euphorbia cyparissias. Seeds with a caruncle that may cover the hilum.
Euphorbia cyparissias
Euphorbia cyparissias. Seeds with a caruncle that may cover the hilum.
Euphorbia davidii. The seed surface is covered with wart-like tubercles.  Euphorbia davidii. The seed surface is covered with wart-like tubercles. 
Euphorbia davidii
Euphorbia davidii. The seed surface is covered with wart-like tubercles. 
From Left to Right: 1: Euphorbia marginata 2. Euphorbia davidii 3. Euphorbia esula . Seeds with a large hilum area that is only partially covered with the small, round caruncle. From Left to Right: 1: Euphorbia marginata 2. Euphorbia davidii 3. Euphorbia esula. Seeds with a large hilum area that is only partially covered with the small, round caruncle.
Euphorbia davidii
From Left to Right: 1: Euphorbia marginata 2. Euphorbia davidii 3. Euphorbia esula. Seeds with a large hilum area that is only partially covered with the small, round caruncle.
Euphorbia davidii. Seeds with a small, round caruncle. Euphorbia davidii. Seeds with a small, round caruncle.
Euphorbia davidii
Euphorbia davidii. Seeds with a small, round caruncle.

Euphorbia esula . Gray seeds with brown flecks. Euphorbia esula. Gray seeds with brown flecks.
Euphorbia esula
Euphorbia esula. Gray seeds with brown flecks.
Euphorbia esula . Cylindrical seeds with a caruncle that covers the hilum. Photo by Julia Scher, USDA-APHIS-PPQ. Euphorbia esula. Cylindrical seeds with a caruncle that covers the hilum. Photo by Julia Scher, USDA-APHIS-PPQ.
Euphorbia esula
Euphorbia esula. Cylindrical seeds with a caruncle that covers the hilum. Photo by Julia Scher, USDA-APHIS-PPQ.
Euphorbia esula . Cylindrical seeds with a chalaza. Photo by Julia Scher, USDA-APHIS-PPQ. Euphorbia esula. Cylindrical seeds with a chalaza. Photo by Julia Scher, USDA-APHIS-PPQ.
Euphorbia esula
Euphorbia esula. Cylindrical seeds with a chalaza. Photo by Julia Scher, USDA-APHIS-PPQ.
Euphorbia esula . Cylindrical seeds that are smooth to minutely reticulate. Photo by Julia Scher, USDA-APHIS-PPQ. Euphorbia esula. Cylindrical seeds that are smooth to minutely reticulate. Photo by Julia Scher, USDA-APHIS-PPQ.
Euphorbia esula
Euphorbia esula. Cylindrical seeds that are smooth to minutely reticulate. Photo by Julia Scher, USDA-APHIS-PPQ.