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    Weeds (22)
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    Gerald Holmes (7)
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Plants - Forbs/Herbs

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Image Subject Name Scientific Name Description
1572396 lettuce Lactuca sativa Pelleted lettuce seeds near a crack in the soil.  Soil cracking can affect lettuce stand establishment. (sudangrass allelopathy experiment).  October 1995
1572395 lettuce Lactuca sativa Pelleted lettuce seeds near a crack in the soil.  Soil cracking can affect lettuce stand establishment. (sudangrass allelopathy experiment).  October 1995
1571636 lettuce Lactuca sativa Radicle from germinating lettuce seed was unable to make sufficient contact with soil and died.  This can be a significant problem during high temperatures at planting such as occurs in Yuma, AZ and the Imperial Valley of CA. August 1995
1571635 lettuce Lactuca sativa Radicle from germinating lettuce seed was unable to make contact with soil and died.  This can be a significant problem during high temperatures at planting such as occurs in Yuma, AZ and the Imperial Valley of CA. August 1995
1571633 lettuce Lactuca sativa Radicle from germinating lettuce seed was unable to make contact with soil and died.  This can be a significant problem during high temperatures at planting such as occurs in Yuma, AZ and the Imperial Valley of CA. August 1995
1571632 lettuce Lactuca sativa Radicle from germinating lettuce seed was unable to make contact with soil and died.  August 1995
1571616 lettuce Lactuca sativa Soil cracks along the seeding line can reduce stand establishment in lettuce.  October 1995
1116031 goldenrod Solidago spp.
5438092 prickly lettuce Lactuca serriola
0025022 musk thistle Carduus nutans
5436164 bull thistle Cirsium vulgare normal empty seed head, not attacked by seed head gall fly
5436163 bull thistle Cirsium vulgare normal seed head not attacked by gall fly
1459141 dandelion Taraxacum officinale
1294030 British yellowhead Inula britannica Seed heads
0015021 coat buttons Tridax procumbens
1120251 anisescented goldenrod Solidago odora October. Photo from Forest Plants of the Southeast and Their Wildlife Uses by J.H. Miller and K.V. Miller, published by The University of Georgia Press in cooperation with the Southern Weed Science Society.
1392102 goatsbeard Tragopogon spp.
1196160 orange hawkweed Hieracium aurantiacum
1120086 American burnweed Erechtites hieraciifolius September. Photo from Forest Plants of the Southeast and Their Wildlife Uses by J.H. Miller and K.V. Miller, published by The University of Georgia Press in cooperation with the Southern Weed Science Society.
1196159 orange hawkweed Hieracium aurantiacum
0024067 musk thistle Carduus nutans from a single seed head
1196158 orange hawkweed Hieracium aurantiacum
1215061 western salsify Tragopogon dubius close-up of seed head
1116032 dandelion Taraxacum officinale
1119119 annual sowthistle Sonchus oleraceus
1358011 orange agoseris Agoseris aurantiaca Seed head
1120223 Carolina falsedandelion Pyrrhopappus carolinianus November. Photo from Forest Plants of the Southeast and Their Wildlife Uses by J.H. Miller and K.V. Miller, published by The University of Georgia Press in cooperation with the Southern Weed Science Society.
1358021 pale agoseris Agoseris glauca Seed head
1459534 meadow salsify Tragopogon lamottei
1380080 dandelion Taraxacum officinale
1380081 dandelion Taraxacum officinale
1380064 coltsfoot Tussilago farfara
5413953 Kure Atoll nehe Lipochaeta integrifolia
5407960 American star-thistle Centaurea americana
5407970 Texas thistle Cirsium texanum
5402997 bristly starbur Acanthospermum hispidum
5365127 common sunflower Helianthus annuus Damage to developing sunflower seeds caused by birds feeding on the seedhead.
5392667 goatsbeard Tragopogon spp.
5392665 common salsify Tragopogon porrifolius Seed head
5392059 bull thistle Cirsium vulgare Gone by thistles
5392005 Italian plumeless thistle Carduus pycnocephalus Setting seed
1556272 hawkweeds Hieracium spp.
5269024 western salsify Tragopogon dubius Seed head is a giant dandelion-type plume, 3 inches in diameter. When the sun hits the seed head, it glistens with a pale bronze color and is quite stunning.
5162041 bull thistle Cirsium vulgare seeds

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