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     


Phalaris carnariensis . Florets with two sterile lemmas that are over half the length of the floret. Phalaris carnariensis. Florets with two sterile lemmas that are over half the length of the floret.
Phalaris canariensis
Phalaris carnariensis. Florets with two sterile lemmas that are over half the length of the floret.
From Left to Right: 1. Phalaris arundinacea 2. Phalaris canariensis. Light brown florets with yellow longitudinal lines.  From Left to Right: 1. Phalaris arundinacea 2. Phalaris canariensis. Light brown florets with yellow longitudinal lines. 
Phalaris canariensis
From Left to Right: 1. Phalaris arundinacea 2. Phalaris canariensis. Light brown florets with yellow longitudinal lines. 
Phaseolus coccineus. True seeds that are highly variable in size and color. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences. Phaseolus coccineus. True seeds that are highly variable in size and color. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Phaseolus coccineus
Phaseolus coccineus. True seeds that are highly variable in size and color. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Phaseolus lunatus. White true seeds with translucent lines radiating from the hilum to the outer margin. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences. Phaseolus lunatus. White true seeds with translucent lines radiating from the hilum to the outer margin. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Phaseolus lunatus
Phaseolus lunatus. White true seeds with translucent lines radiating from the hilum to the outer margin. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.

Phaseolus vulgaris. True seeds with extreme variability in color and size. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences. Phaseolus vulgaris. True seeds with extreme variability in color and size. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Phaseolus vulgaris
Phaseolus vulgaris. True seeds with extreme variability in color and size. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Phedimus spurius. True seeds with fine longitudinal lines with stipples in between. Phedimus spurius. True seeds with fine longitudinal lines with stipples in between.
Phedimus spurius
Phedimus spurius. True seeds with fine longitudinal lines with stipples in between.
Phleum pratense. Caryopsis with a slightly oblique scar. Phleum pratense. Caryopsis with a slightly oblique scar.
Phleum pratense
Phleum pratense. Caryopsis with a slightly oblique scar.
Phleum pratense. Brown caryopsis and a gray floret. Phleum pratense. Brown caryopsis and a gray floret.
Phleum pratense
Phleum pratense. Brown caryopsis and a gray floret.

Phlox drummondii. True seeds with a longitudinal groove on the dorsal side. Phlox drummondii. True seeds with a longitudinal groove on the dorsal side.
Phlox drummondii
Phlox drummondii. True seeds with a longitudinal groove on the dorsal side.
Physalis alkekengi. True seeds with stipples that tend to be in rows parallel to the circular margin. Physalis alkekengi. True seeds with stipples that tend to be in rows parallel to the circular margin.
Physalis alkekengi
Physalis alkekengi. True seeds with stipples that tend to be in rows parallel to the circular margin.
Physalis longifolia var. subglabrata . Yellow true seeds with a rough sugary look. Physalis longifolia var. subglabrata. Yellow true seeds with a rough sugary look.
Physalis longifolia var. subglabrata
Physalis longifolia var. subglabrata. Yellow true seeds with a rough sugary look.
From Left to Right: 1. Solanum nigrum 2. 3. Physalis spp. From Left to Right: 1. Solanum nigrum 2. & 3. Physalis spp.
Physalis longifolia var. subglabrata
From Left to Right: 1. Solanum nigrum 2. & 3. Physalis spp.

Phytolacca americana. True seeds, some with fragments of transparent tissue that may adhere to the seed surface. Phytolacca americana. True seeds, some with fragments of transparent tissue that may adhere to the seed surface.
Phytolacca americana
Phytolacca americana. True seeds, some with fragments of transparent tissue that may adhere to the seed surface.
Picris echioides. Achenes with transverse ridges, which are narrow and crowded at the base and gradually become wider and deeper approaching the apex. Picris echioides. Achenes with transverse ridges, which are narrow and crowded at the base and gradually become wider and deeper approaching the apex.
Picris echioides
Picris echioides. Achenes with transverse ridges, which are narrow and crowded at the base and gradually become wider and deeper approaching the apex.
Pimpinella anisum. Mericarps with strong longitudinal ribs. Pimpinella anisum. Mericarps with strong longitudinal ribs.
Pimpinella anisum
Pimpinella anisum. Mericarps with strong longitudinal ribs.
Pinus ponderosa . True seeds that are often associated with wings, which are totally or partially removed in the conditioning process. Pinus ponderosa. True seeds that are often associated with wings, which are totally or partially removed in the conditioning process.
Pinus ponderosa
Pinus ponderosa. True seeds that are often associated with wings, which are totally or partially removed in the conditioning process.

Piper aduncum. True seeds that are black with a yellow caruncle.  Piper aduncum. True seeds that are black with a yellow caruncle. 
Piper aduncum
Piper aduncum. True seeds that are black with a yellow caruncle. 
Piptatheropsis micrantha. Florets with light striations on the florets and glumes. Piptatheropsis micrantha. Florets with light striations on the florets and glumes.
Piptatheropsis micrantha
Piptatheropsis micrantha. Florets with light striations on the florets and glumes.
Pisum sativum. Seeds of garden peas are usually white to green in color, whereas field peas can be green with purple spots, or yellow with brown flecking. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences. Pisum sativum. Seeds of garden peas are usually white to green in color, whereas field peas can be green with purple spots, or yellow with brown flecking. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Pisum sativum
Pisum sativum. Seeds of garden peas are usually white to green in color, whereas field peas can be green with purple spots, or yellow with brown flecking. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Pittosporum undulatum. True seeds that are black with scattered yellow surface material.  Pittosporum undulatum. True seeds that are black with scattered yellow surface material. 
Pittosporum undulatum
Pittosporum undulatum. True seeds that are black with scattered yellow surface material. 

Plantago aristata. True seeds with a white ring surrounding the double hilum but not touching it. Plantago aristata. True seeds with a white ring surrounding the double hilum but not touching it.
Plantago aristata
Plantago aristata. True seeds with a white ring surrounding the double hilum but not touching it.
Plantago coronopus. True seeds with strong stipples on the dorsal side but weak on the ventral side.  Plantago coronopus. True seeds with strong stipples on the dorsal side but weak on the ventral side. 
Plantago coronopus
Plantago coronopus. True seeds with strong stipples on the dorsal side but weak on the ventral side. 
Plantago lanceolata . True seeds with heavily enrolled margins. Plantago lanceolata. True seeds with heavily enrolled margins.
Plantago lanceolata
Plantago lanceolata. True seeds with heavily enrolled margins.
Plantago lanceolata. True seeds with a light brown embryo. Plantago lanceolata. True seeds with a light brown embryo.
Plantago lanceolata
Plantago lanceolata. True seeds with a light brown embryo.

Plantago major. True seeds with small ridges that travel the length of the dorsal side but turn on the ventral side, and converge toward the hilum.  Plantago major. True seeds with small ridges that travel the length of the dorsal side but turn on the ventral side, and converge toward the hilum. 
Plantago major
Plantago major. True seeds with small ridges that travel the length of the dorsal side but turn on the ventral side, and converge toward the hilum. 
Plantago media. True seeds with a rounded dorsal side and a slightly concave ventral side. Plantago media. True seeds with a rounded dorsal side and a slightly concave ventral side.
Plantago media
Plantago media. True seeds with a rounded dorsal side and a slightly concave ventral side.
Plantago ovata. True seeds with a brown longitudinal bar on the dorsal side and V-shaped bars in the ventral cavity. Plantago ovata. True seeds with a brown longitudinal bar on the dorsal side and V-shaped bars in the ventral cavity.
Plantago ovata
Plantago ovata. True seeds with a brown longitudinal bar on the dorsal side and V-shaped bars in the ventral cavity.
Plantago ovata. True seeds with a brown longitudinal bar on the dorsal side and V-shaped bars in the ventral cavity. Plantago ovata. True seeds with a brown longitudinal bar on the dorsal side and V-shaped bars in the ventral cavity.
Plantago ovata
Plantago ovata. True seeds with a brown longitudinal bar on the dorsal side and V-shaped bars in the ventral cavity.

Plantago rugelii. Rough true seeds with angular margins. Plantago rugelii. Rough true seeds with angular margins.
Plantago rugelii
Plantago rugelii. Rough true seeds with angular margins.
Plantago virginica . True seeds with a hilum that is medial and depressed in the ventral concavity.  Plantago virginica. True seeds with a hilum that is medial and depressed in the ventral concavity. 
Plantago virginica
Plantago virginica. True seeds with a hilum that is medial and depressed in the ventral concavity. 
Pleuraphis jamesii . Spikelets with appressed hairs at the base. Pleuraphis jamesii. Spikelets with appressed hairs at the base.
Pleuraphis jamesii
Pleuraphis jamesii. Spikelets with appressed hairs at the base.
Pleuraphis rigida. Spikelets with narrow lemmas that are deeply cleft into a few or several lobes and awns. Pleuraphis rigida. Spikelets with narrow lemmas that are deeply cleft into a few or several lobes and awns.
Pleuraphis rigida
Pleuraphis rigida. Spikelets with narrow lemmas that are deeply cleft into a few or several lobes and awns.

Poa alpina.  Florets that have a slightly mottled surface. Poa alpina. Florets that have a slightly mottled surface.
Poa alpina
Poa alpina. Florets that have a slightly mottled surface.
Poa annua . Woolly floret. Poa annua. Woolly floret.
Poa annua
Poa annua. Woolly floret.
Poa annua .  Floret with a strong and protruding rachilla. Poa annua.  Floret with a strong and protruding rachilla.
Poa annua
Poa annua.  Floret with a strong and protruding rachilla.
From Left to Right: 1. Poa annua 2. Poa compressa 3. Poa nemoralis 4. Poa pratensis 5. Poa trivialis . Florets with long hairs on the lemma curves, palea margins, and the callus. From Left to Right: 1. Poa annua 2. Poa compressa 3. Poa nemoralis 4. Poa pratensis 5. Poa trivialis. Florets with long hairs on the lemma curves, palea margins, and the callus.
Poa annua
From Left to Right: 1. Poa annua 2. Poa compressa 3. Poa nemoralis 4. Poa pratensis 5. Poa trivialis. Florets with long hairs on the lemma curves, palea margins, and the callus.

Poa bulbosa. Bulblets are vegetative structures and not derived from a flower. Poa bulbosa. Bulblets are vegetative structures and not derived from a flower.
Poa bulbosa
Poa bulbosa. Bulblets are vegetative structures and not derived from a flower.
From Left to Right: 1. Poa annua 2. Poa compressa 3. Poa nemoralis 4. Poa pratensis 5. Poa trivialis. Smooth florets with fine hairs on the palea margin. From Left to Right: 1. Poa annua 2. Poa compressa 3. Poa nemoralis 4. Poa pratensis 5. Poa trivialis. Smooth florets with fine hairs on the palea margin.
Poa compressa
From Left to Right: 1. Poa annua 2. Poa compressa 3. Poa nemoralis 4. Poa pratensis 5. Poa trivialis. Smooth florets with fine hairs on the palea margin.
Poa compressa. Florets with a stout rachilla that has a prominent apical disk. Poa compressa. Florets with a stout rachilla that has a prominent apical disk.
Poa compressa
Poa compressa. Florets with a stout rachilla that has a prominent apical disk.
Poa glauca. Florets with faint intermediate nerves. Poa glauca. Florets with faint intermediate nerves.
Poa glauca
Poa glauca. Florets with faint intermediate nerves.