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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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Rubus ellipticus. Achenes with translucent fruit material. Rubus ellipticus. Achenes with translucent fruit material.
Rubus ellipticus
Rubus ellipticus. Achenes with translucent fruit material.
Rubus ellipticus. Achenes with large equilateral reticulations. Rubus ellipticus. Achenes with large equilateral reticulations.
Rubus ellipticus
Rubus ellipticus. Achenes with large equilateral reticulations.
Rubus fruticosus complex. True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus fruticosus complex. True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus fruticosus
Rubus fruticosus complex. True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus hispidus. Berry. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus hispidus. Berry. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus hispidus
Rubus hispidus. Berry. Photo by Julia Scher, USDA-APHIS-PPQ.

Rubus hispidus. True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus hispidus. True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus hispidus
Rubus hispidus. True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
From Left to Right: Rubus trivialis 2. Rubus spectabilis 3. Rubus idaeus. True seeds with reticulations that are faintly equilateral in the center, long at the base, and faint at the apex.  From Left to Right: Rubus trivialis 2. Rubus spectabilis 3. Rubus idaeus. True seeds with reticulations that are faintly equilateral in the center, long at the base, and faint at the apex. 
Rubus idaeus
From Left to Right: Rubus trivialis 2. Rubus spectabilis 3. Rubus idaeus. True seeds with reticulations that are faintly equilateral in the center, long at the base, and faint at the apex. 
Rubus moluccanus. True seeds with granular transparent fruit material. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus moluccanus. True seeds with granular transparent fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus moluccanus
Rubus moluccanus. True seeds with granular transparent fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus moluccanus. True seeds with granular transparent fruit material. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus moluccanus. True seeds with granular transparent fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus moluccanus
Rubus moluccanus. True seeds with granular transparent fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.

Rubus moluccanus. True seeds with granular transparent fruit material. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus moluccanus. True seeds with granular transparent fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus moluccanus
Rubus moluccanus. True seeds with granular transparent fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus rosaceus. True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus rosaceus. True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus rosaceus
Rubus rosaceus. True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus rosifolius. True seeds with the hilum on the straight hilum. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus rosifolius. True seeds with the hilum on the straight hilum. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus rosifolius
Rubus rosifolius. True seeds with the hilum on the straight hilum. Photo by Julia Scher, USDA-APHIS-PPQ.
From Left to Right: 1. Rubus trivialis 2. Rubus spectabilis 3. Rubus idaeus.    Rubus spectabils is the largest in this group. It is conspicuously glossy in the fruit coat with a large reticulum. From Left to Right: 1. Rubus trivialis 2. Rubus spectabilis 3. Rubus idaeus.  Rubus spectabils is the largest in this group. It is conspicuously glossy in the fruit coat with a large reticulum.
Rubus spectabilis
From Left to Right: 1. Rubus trivialis 2. Rubus spectabilis 3. Rubus idaeus.  Rubus spectabils is the largest in this group. It is conspicuously glossy in the fruit coat with a large reticulum.

Rubus spectabilis. True seeds with a smooth and shiny surface. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus spectabilis. True seeds with a smooth and shiny surface. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus spectabilis
Rubus spectabilis. True seeds with a smooth and shiny surface. Photo by Julia Scher, USDA-APHIS-PPQ.
From Left to Right: 1. Rubus trivialis 2. Rubus spectabilis 3. Rubus idaeus . True seeds with reticulations that are faintly equilateral in the center, long at the base, and faint at the apex.  From Left to Right: 1. Rubus trivialis 2. Rubus spectabilis 3. Rubus idaeus. True seeds with reticulations that are faintly equilateral in the center, long at the base, and faint at the apex. 
Rubus trivialis
From Left to Right: 1. Rubus trivialis 2. Rubus spectabilis 3. Rubus idaeus. True seeds with reticulations that are faintly equilateral in the center, long at the base, and faint at the apex. 
Rubus ulmifolius. True seeds that are covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus ulmifolius. True seeds that are covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus ulmifolius
Rubus ulmifolius. True seeds that are covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus ulmifolius. Berry. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus ulmifolius. Berry. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus ulmifolius
Rubus ulmifolius. Berry. Photo by Julia Scher, USDA-APHIS-PPQ.

Rubus ulmifolius. True seeds that are covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus ulmifolius. True seeds that are covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus ulmifolius
Rubus ulmifolius. True seeds that are covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus ulmifolius. True seeds with a curved ridge on the margin. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus ulmifolius. True seeds with a curved ridge on the margin. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus ulmifolius
Rubus ulmifolius. True seeds with a curved ridge on the margin. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus ursinus. True seeds are covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus ursinus. True seeds are covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus ursinus
Rubus ursinus. True seeds are covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus vulgaris. Seed covered in dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus vulgaris. Seed covered in dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus vulgaris
Rubus vulgaris. Seed covered in dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.

Rubus vulgaris. True seeds with reticulations. Photo by Julia Scher, USDA-APHIS-PPQ. Rubus vulgaris. True seeds with reticulations. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus vulgaris
Rubus vulgaris. True seeds with reticulations. Photo by Julia Scher, USDA-APHIS-PPQ.
Rudbeckia hirta. Black achenes with a rounded base. Rudbeckia hirta. Black achenes with a rounded base.
Rudbeckia hirta
Rudbeckia hirta. Black achenes with a rounded base.
Rudbeckia hirta . Strongly four-sided achenes with a basal scar. Rudbeckia hirta. Strongly four-sided achenes with a basal scar.
Rudbeckia hirta
Rudbeckia hirta. Strongly four-sided achenes with a basal scar.
Rudbeckia hirta . Achenes with many longitudinal ridges and an apical collar. Rudbeckia hirta. Achenes with many longitudinal ridges and an apical collar.
Rudbeckia hirta
Rudbeckia hirta. Achenes with many longitudinal ridges and an apical collar.

Rudbeckia laciniata. Achenes with strong longitudinal ribs that have striations between them. Rudbeckia laciniata. Achenes with strong longitudinal ribs that have striations between them.
Rudbeckia laciniata
Rudbeckia laciniata. Achenes with strong longitudinal ribs that have striations between them.
Rudbeckia subtomentosa. Achenes with a dark colored pappus crown. Rudbeckia subtomentosa. Achenes with a dark colored pappus crown.
Rudbeckia subtomentosa
Rudbeckia subtomentosa. Achenes with a dark colored pappus crown.
Rumex acetosa. Achenes with sharp longitudinal ridges that are angled in cross-section. Rumex acetosa. Achenes with sharp longitudinal ridges that are angled in cross-section.
Rumex acetosa
Rumex acetosa. Achenes with sharp longitudinal ridges that are angled in cross-section.
Rumex acetosella. Achenes are mostly covered with rugose floral structures. Rumex acetosella. Achenes are mostly covered with rugose floral structures.
Rumex acetosella
Rumex acetosella. Achenes are mostly covered with rugose floral structures.

Rumex altissimus. Achenes with ridges that approach the apical and basal ends in a straight line, and usually do not recurve. Rumex altissimus. Achenes with ridges that approach the apical and basal ends in a straight line, and usually do not recurve.
Rumex altissimus
Rumex altissimus. Achenes with ridges that approach the apical and basal ends in a straight line, and usually do not recurve.
Rumex conglomeratus. Achenes with large spongy callosities that appear on the calyx lobes. Rumex conglomeratus. Achenes with large spongy callosities that appear on the calyx lobes.
Rumex conglomeratus
Rumex conglomeratus. Achenes with large spongy callosities that appear on the calyx lobes.
Rumex crispus. Achenes with relatively smooth calyce margins. Rumex crispus. Achenes with relatively smooth calyce margins.
Rumex crispus
Rumex crispus. Achenes with relatively smooth calyce margins.
Rumex maritimus. Achenes that are equally pointed at both ends, with the ridge lines not recurving.  Rumex maritimus. Achenes that are equally pointed at both ends, with the ridge lines not recurving. 
Rumex maritimus
Rumex maritimus. Achenes that are equally pointed at both ends, with the ridge lines not recurving. 

Rumex obtusifolius. Achenes with margins of calyx lobes that have long teeth on the basal half. Rumex obtusifolius. Achenes with margins of calyx lobes that have long teeth on the basal half.
Rumex obtusifolius
Rumex obtusifolius. Achenes with margins of calyx lobes that have long teeth on the basal half.
Rumex pulcher. Achenes with some recurve at the base. Rumex pulcher. Achenes with some recurve at the base.
Rumex pulcher
Rumex pulcher. Achenes with some recurve at the base.
Rumex salicifolius . Achenes with sepals without callosities.  Rumex salicifolius. Achenes with sepals without callosities. 
Rumex salicifolius
Rumex salicifolius. Achenes with sepals without callosities. 
Rumex stenophyllus. Achenes with calyx margins with incised edges and central callosities. Rumex stenophyllus. Achenes with calyx margins with incised edges and central callosities.
Rumex stenophyllus
Rumex stenophyllus. Achenes with calyx margins with incised edges and central callosities.

Rumex venosus. Achenes with raised ridges with concave sides in between. Rumex venosus. Achenes with raised ridges with concave sides in between.
Rumex venosus
Rumex venosus. Achenes with raised ridges with concave sides in between.
Ruta graveolens. True seeds with the hilum centered in a concave margin. Ruta graveolens. True seeds with the hilum centered in a concave margin.
Ruta graveolens
Ruta graveolens. True seeds with the hilum centered in a concave margin.
Saccharum officinarum. Spikelets with many long silky hairs attached to the unit base. Photo by Julia Scher, USDA-APHIS-PPQ. Saccharum officinarum. Spikelets with many long silky hairs attached to the unit base. Photo by Julia Scher, USDA-APHIS-PPQ.
Saccharum officinarum
Saccharum officinarum. Spikelets with many long silky hairs attached to the unit base. Photo by Julia Scher, USDA-APHIS-PPQ.
Saccharum officinarum. Spikelets with a rachis segment and pedicel present. Photo by Julia Scher, USDA-APHIS-PPQ. Saccharum officinarum. Spikelets with a rachis segment and pedicel present. Photo by Julia Scher, USDA-APHIS-PPQ.
Saccharum officinarum
Saccharum officinarum. Spikelets with a rachis segment and pedicel present. Photo by Julia Scher, USDA-APHIS-PPQ.