ITP Logo

Gallery

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

 

per page:

page:
of 59     


Nassella trichotoma. Brown florets enclosed by papery glumes. Nassella trichotoma. Brown florets enclosed by papery glumes.
Nassella trichotoma
Nassella trichotoma. Brown florets enclosed by papery glumes.
Nassella trichotoma. Floret with a pubescent callus. Nassella trichotoma. Floret with a pubescent callus.
Nassella trichotoma
Nassella trichotoma. Floret with a pubescent callus.
Nassella viridula. The apical end of the floret has a crown with vertical hairs. Nassella viridula. The apical end of the floret has a crown with vertical hairs.
Nassella viridula
Nassella viridula. The apical end of the floret has a crown with vertical hairs.
Nasturtium officinale. Brown reticulated seeds. Nasturtium officinale. Brown reticulated seeds.
Nasturtium officinale
Nasturtium officinale. Brown reticulated seeds.

Nasturtium officinale. Seeds with a shiny base reticulation. Nasturtium officinale. Seeds with a shiny base reticulation.
Nasturtium officinale
Nasturtium officinale. Seeds with a shiny base reticulation.
Neltuma articulata . True seeds with a circular line between the margin and center. Photo by Julia Scher, USDA-APHIS-PPQ. Neltuma articulata. True seeds with a circular line between the margin and center. Photo by Julia Scher, USDA-APHIS-PPQ.
Neltuma articulata
Neltuma articulata. True seeds with a circular line between the margin and center. Photo by Julia Scher, USDA-APHIS-PPQ.
Neltuma articulata . True seeds with the hilum at the base, with a small lateral protrusion. Photo by Julia Scher, USDA-APHIS-PPQ. Neltuma articulata. True seeds with the hilum at the base, with a small lateral protrusion. Photo by Julia Scher, USDA-APHIS-PPQ.
Neltuma articulata
Neltuma articulata. True seeds with the hilum at the base, with a small lateral protrusion. Photo by Julia Scher, USDA-APHIS-PPQ.
Neltuma articulata . Fruits. Photo by Julia Scher, USDA-APHIS-PPQ. Neltuma articulata. Fruits. Photo by Julia Scher, USDA-APHIS-PPQ.
Neltuma articulata
Neltuma articulata. Fruits. Photo by Julia Scher, USDA-APHIS-PPQ.

Prosopis velutina. True seeds are in seed pods. Photo by Julia Scher, USDA-APHIS-PPQ. Prosopis velutina. True seeds are in seed pods. Photo by Julia Scher, USDA-APHIS-PPQ.
Neltuma articulata
Prosopis velutina. True seeds are in seed pods. Photo by Julia Scher, USDA-APHIS-PPQ.
Neltuma articulata . Fruits. Photo by Julia Scher, USDA-APHIS-PPQ. Neltuma articulata. Fruits. Photo by Julia Scher, USDA-APHIS-PPQ.
Neltuma articulata
Neltuma articulata. Fruits. Photo by Julia Scher, USDA-APHIS-PPQ.
Nemesia sp. Seeds with lacy fruit covers. Nemesia sp. Seeds with lacy fruit covers.
Nemesia sp.
Nemesia sp. Seeds with lacy fruit covers.
Nemophila maculata. Seeds with small yellow stipples. Nemophila maculata. Seeds with small yellow stipples.
Nemophila maculata
Nemophila maculata. Seeds with small yellow stipples.

Nemophila menziesii. Seed surfaces are irregularly covered with light brown spots. Nemophila menziesii. Seed surfaces are irregularly covered with light brown spots.
Nemophila menziesii
Nemophila menziesii. Seed surfaces are irregularly covered with light brown spots.
Nemophila menziesii. Seed surfaces are irregularly covered with light brown spots, and the hilum is on the distal end. Nemophila menziesii. Seed surfaces are irregularly covered with light brown spots, and the hilum is on the distal end.
Nemophila menziesii
Nemophila menziesii. Seed surfaces are irregularly covered with light brown spots, and the hilum is on the distal end.
From Left to Right: 1. Salvia azurea var. grandiflora 2. Dracocephalum parviflora 3. Salvia reflexa 4. Nepeta cataria 5. Monarda punctata 6. Mentha arvensis . Nutlets with white scars at the base.  From Left to Right: 1. Salvia azurea var. grandiflora 2. Dracocephalum parviflora 3. Salvia reflexa 4. Nepeta cataria 5. Monarda punctata 6.Mentha arvensis. Nutlets with white scars at the base. 
Nepeta cataria
From Left to Right: 1. Salvia azurea var. grandiflora 2. Dracocephalum parviflora 3. Salvia reflexa 4. Nepeta cataria 5. Monarda punctata 6.Mentha arvensis. Nutlets with white scars at the base. 
Nepeta cataria. Nutlets with a slanting, oval scar at the base on each of the two flat surfaces.  Nepeta cataria. Nutlets with a slanting, oval scar at the base on each of the two flat surfaces. 
Nepeta cataria
Nepeta cataria. Nutlets with a slanting, oval scar at the base on each of the two flat surfaces. 

Nepeta racemosa. Nutlets with a white, V-shaped attachment area at base of dorsal side. Nepeta racemosa. Nutlets with a white, V-shaped attachment area at base of dorsal side.
Nepeta racemosa
Nepeta racemosa. Nutlets with a white, V-shaped attachment area at base of dorsal side.
Neslia paniculata. Silicles with a margin that have a stigma stem on one end, and an attachment stem on the other.  Neslia paniculata. Silicles with a margin that have a stigma stem on one end, and an attachment stem on the other. 
Neslia paniculata
Neslia paniculata. Silicles with a margin that have a stigma stem on one end, and an attachment stem on the other. 
Nicotiana × hybrida. Seeds with a protruding hilum. Nicotiana × hybrida. Seeds with a protruding hilum.
Nicotiana × hybrida
Nicotiana × hybrida. Seeds with a protruding hilum.
Nicotiana sylvestris. Seeds with the hilum that is lateral to the base. Nicotiana sylvestris. Seeds with the hilum that is lateral to the base.
Nicotiana sylvestris
Nicotiana sylvestris. Seeds with the hilum that is lateral to the base.

Nicotiana tabacum. Seeds with a narrow hilum that is a conspicuous projection on the seed margin.  Nicotiana tabacum. Seeds with a narrow hilum that is a conspicuous projection on the seed margin. 
Nicotiana tabacum
Nicotiana tabacum. Seeds with a narrow hilum that is a conspicuous projection on the seed margin. 
Nierembergia sp. Seeds with surfaces composed of irregular flat surfaces.  Nierembergia sp. Seeds with surfaces composed of irregular flat surfaces. 
Nierembergia sp.
Nierembergia sp. Seeds with surfaces composed of irregular flat surfaces. 
Nigella damascena. Seeds with a large rib following the entire margin of the seed.  Nigella damascena. Seeds with a large rib following the entire margin of the seed. 
Nigella damascena
Nigella damascena. Seeds with a large rib following the entire margin of the seed. 
Nigella sp. Black seeds with a large rib following the entire margin of the seed. Nigella sp. Black seeds with a large rib following the entire margin of the seed.
Nigella sp.
Nigella sp. Black seeds with a large rib following the entire margin of the seed.

Ocimum basilicum. Nutlets with a single protruding scar and a slight longitudinal ridge on the dorsal side.  Ocimum basilicum. Nutlets with a single protruding scar and a slight longitudinal ridge on the dorsal side. 
Ocimum basilicum
Ocimum basilicum. Nutlets with a single protruding scar and a slight longitudinal ridge on the dorsal side. 
Odontites vulgaris. Achenes with ten or more strong, sharp longitudinal ridges. Odontites vulgaris. Achenes with ten or more strong, sharp longitudinal ridges.
Odontites vernus subsp. serotinus
Odontites vulgaris. Achenes with ten or more strong, sharp longitudinal ridges.
Oenothera argillicola. Seeds with strong ridges where flat surfaces meet. Oenothera argillicola. Seeds with strong ridges where flat surfaces meet.
Oenothera argillicola
Oenothera argillicola. Seeds with strong ridges where flat surfaces meet.
Oenothera biennis. Seeds with many irregular flat surfaces with a ridge between the surfaces.  Oenothera biennis. Seeds with many irregular flat surfaces with a ridge between the surfaces. 
Oenothera biennis
Oenothera biennis. Seeds with many irregular flat surfaces with a ridge between the surfaces. 

Oenothera cinerea. Capsules with four longitudinal winglike ridges with sharp edges.  Oenothera cinerea. Capsules with four longitudinal winglike ridges with sharp edges. 
Oenothera cinerea
Oenothera cinerea. Capsules with four longitudinal winglike ridges with sharp edges. 
Oenothera coronopifolia. Scurfy rough seeds. Oenothera coronopifolia. Scurfy rough seeds.
Oenothera coronopifolia
Oenothera coronopifolia. Scurfy rough seeds.
From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida  3. Oenothera gaura . Smooth capsules with eight longitudinal grooves. From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida 3. Oenothera gaura. Smooth capsules with eight longitudinal grooves.
Oenothera curtiflora
From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida 3. Oenothera gaura. Smooth capsules with eight longitudinal grooves.
From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida  3. Oenothera gaura . There are four longitudinal bracts surrounding the capsule. From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida 3. Oenothera gaura. There are four longitudinal bracts surrounding the capsule.
Oenothera gaura
From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida 3. Oenothera gaura. There are four longitudinal bracts surrounding the capsule.

Oenothera grandiflora. Seeds with wavy ridges. Oenothera grandiflora. Seeds with wavy ridges.
Oenothera grandiflora
Oenothera grandiflora. Seeds with wavy ridges.
From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida  3. Oenothera gaura.  Dull and woolly capsules. From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida 3. Oenothera gaura. Dull and woolly capsules.
Oenothera hispida
From Left to Right: 1. Oenothera curtiflora 2. Oenothera hispida 3. Oenothera gaura. Dull and woolly capsules.
Oenothera hispida.  The capsule's large protruding carpal walls have longitudinal grooves. Oenothera hispida. The capsule's large protruding carpal walls have longitudinal grooves.
Oenothera hispida
Oenothera hispida. The capsule's large protruding carpal walls have longitudinal grooves.
Oenothera hispida. The apex of the capsule is pyramidal, while the base is cylindrical. Oenothera hispida. The apex of the capsule is pyramidal, while the base is cylindrical.
Oenothera hispida
Oenothera hispida. The apex of the capsule is pyramidal, while the base is cylindrical.

Oenothera laciniata. Small seeds with a very rough reticulated surface.  Oenothera laciniata. Small seeds with a very rough reticulated surface. 
Oenothera laciniata
Oenothera laciniata. Small seeds with a very rough reticulated surface. 
Oenothera lindheimeri. Capsules with a central longitudinal groove on each side. Oenothera lindheimeri. Capsules with a central longitudinal groove on each side.
Oenothera lindheimeri
Oenothera lindheimeri. Capsules with a central longitudinal groove on each side.
Oenothera macrocarpa. Winged structures on the seeds' apical end.  Oenothera macrocarpa. Winged structures on the seeds' apical end. 
Oenothera macrocarpa
Oenothera macrocarpa. Winged structures on the seeds' apical end. 
Oenothera perennis. True seeds with a large marginal rib. Oenothera perennis. True seeds with a large marginal rib.
Oenothera perennis
Oenothera perennis. True seeds with a large marginal rib.