2021
Northeastern Colorado

Until this summer we had not explored the wildflower opportunities of Northeastern Colorado, concentrating instead on the mountains and Western Slope. This changed with a trip in June to Sterling in Logan County, where I grew up, and Pawnee Buttes National Grassland in adjacent Weld County. As might be expected we found many new species for the site, 45 in all.

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NEW! Apocynum cannabinum (Indian Hemp) 7122
Photo Details
Common Name Indian Hemp
Scientific Name Apocynum cannabinum
Family Apocynaceae
(Dogbane)
Date June 25, 2021
Location Overland Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/14
Speed 1/320 sec.
ISO 800
More Photos and Plant Details
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NEW! Argemone polyanthemos (Crested Prickly Poppy) 7324
Photo Details
Common Name Crested Prickly Poppy, Thistle Poppy
Scientific Name Argemone polyanthemos
Family Papaveraceae
(Poppy)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 100 mm
Aperture f/16
Speed 1/1250 sec.
ISO 2000
More Photos and Plant Details
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NEW! Hedysarum boreale (Boreal) Sweetvetch) 7554
Photo Details
Common Name Boreal Sweetvetch
Scientific Name Hedysarum boreale
Family Fabaceae
(Pea)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 140 mm
Aperture f/16
Speed 1/320 sec.
ISO 2000
More Photos and Plant Details
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NEW! Astragalus gracilis (Slender Milkvetch) 7437
Photo Details
Common Name Slender Milkvetch
Scientific Name Astragalus gracilis
Family Fabaceae
(Pea)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/200 sec.
ISO 2500
More Photos and Plant Details
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NEW! Astragalus kentrophyta (Spiny Milkvetch) 7566
Photo Details
Common Name Spiny Milkvetch
Scientific Name Astragalus kentrophyta
Family Fabaceae
(Pea)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/250 sec.
ISO 2000
More Photos and Plant Details
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NEW! Astragalus laxmannii var. robustior (Prairie Milkvetch) 7921
Photo Details
Common Name Prairie Milkvetch
Scientific Name Astragalus laxmannii var. robustior
Family Fabaceae
(Pea)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/14
Speed 1/80 sec.
ISO 800
More Photos and Plant Details
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NEW! Berteroa incana (Hoary False Alyssum) 7181
Photo Details
Common Name Hoary False Alyssum
Scientific Name Berteroa incana
Family Brassicaceae
(Mustard)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 160 mm
Aperture f/16
Speed 1/400 sec.
ISO 800
More Photos and Plant Details
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NEW! Cirsium canescens (Prairie Thistle) 7758
Photo Details
Common Name Prairie Thistle
Scientific Name Cirsium canescens
Family Asteraceae
(Sunflower)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/2000 sec.
ISO 2000
More Photos and Plant Details
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NEW! Conium maculatum (Poison Hemlock) 7255
Photo Details
Common Name Poison Hemlock
Scientific Name Conium maculatum
Family Apiaceae
(Parsley)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/18
Speed 1/200 sec.
ISO 1400
More Photos and Plant Details
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NEW! Croton texensis (Texas Croton) 7151
Photo Details
Common Name Texas Croton, Skunkweed
Scientific Name Croton texensis
Family Euphorbiaceae
(Spurge)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/160 sec.
ISO 800
More Photos and Plant Details
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NEW! Cryptantha cinerea var. jamesii (James’ Cryptantha) 7385
Photo Details
Common Name James' Cryptantha
Scientific Name Cryptantha cinerea var. jamesii
Family Boraginaceae
(Forget-me-not)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/250 sec.
ISO 2000
More Photos and Plant Details
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NEW! Cryptantha minima (Little Cryptantha) 7363
Photo Details
Common Name Little Cryptantha
Scientific Name Cryptantha minima
Family Boraginaceae
(Forget-me-not)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/200 sec.
ISO 2000
More Photos and Plant Details
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NEW! Cryptantha thyrsiflora (Calcareous Cryptantha) 7778
Photo Details
Common Name Calcareous Cryptantha, Calcareous Catseye
Scientific Name Cryptantha thyrsifolia
Family Boraginaceae
(Forget-me-not)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/1000 sec.
ISO 2000
More Photos and Plant Details
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NEW! Dalea candida (Prairie White Clover) 7463
Photo Details
Common Name Prairie White Clover
Scientific Name Dalea candida
Family Fabaceae
(Pea)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/250 sec.
ISO 2000
More Photos and Plant Details
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NEW! Delphinium carolinianum ssp. virescens (Plains Larkspur) 8055-2
Photo Details
Common Name Plains Larkspur, White Larkspur, Carolina Larkspur
Scientific Name Delphinium carolinianum ssp. virescens
Family Fabaceae
(Pea)
Date June 26, 2021
Location Along CR 12 west of Pawnee Buttes, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 160 mm
Aperture f/14
Speed 1/500 sec.
ISO 800
More Photos and Plant Details
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NEW! Delphinium geyeri (Geyer’s Larkspur) 8034
Photo Details
Common Name Geyer's Larkspur
Scientific Name Delphinium geyeri
Family Fabaceae
(Pea)
Date June 26, 2021
Location Along CR 12 west of Pawnee Buttes, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/400 sec.
ISO 1600
More Photos and Plant Details
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NEW! Eremogone hookeri var. hookeri (Hooker’s Sandwort) 7726
Photo Details
Common Name Hooker's Sandwort
Scientific Name Eremogone hookeri var. hookeri
Family Caryophyllaceae
(Pink)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 82 mm
Aperture f/18
Speed 1/500 sec.
ISO 2000
More Photos and Plant Details
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NEW! Erigeron bellidiastrum (Pretty Daisy) 7636
Photo Details
Common Name Pretty Daisy
Scientific Name Erigeron bellidiastrum
Family Asteraceae
(Sunflower)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/1000 sec.
ISO 2000
More Photos and Plant Details
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NEW! Eriogonum alatum var. alatum (Winged Buckwheat)  7491
Photo Details
Common Name Winged Buckwheat
Scientific Name Eriogonum alatum var. alatum
Family Polygonaceae
(Buckwheat)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/640 sec.
ISO 2000
More Photos and Plant Details
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NEW! Eriogonum ovalifolium var. purpureum (Purple Cushion Buckwheat) 7520
Photo Details
Common Name Purple Cushion Buckwheat
Scientific Name Eriogonum ovalifolium var. purpureum
Family Polygonaceae
(Buckwheat)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/14
Speed 1/400 sec.
ISO 2000
More Photos and Plant Details
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NEW! Euphorbia esula (Leafy Spurge) 7058
Photo Details
Common Name Leafy Spurge
Scientific Name Euphorbia esula
Family Euphorbiaceae
(Spurge)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 130 mm
Aperture f/16
Speed 1/160 sec.
ISO 1600
More Photos and Plant Details
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NEW! Helianthus petiolaris ssp. petiolaris (Prairie Sunflower) 7875
Photo Details
Common Name Prairie Sunflower
Scientific Name Heliantus petiolaris ssp. petiolaris
Family Asteraceae
(Sunflower)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/2500 sec.
ISO 800
More Photos and Plant Details
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Heterotheca villosa (Hairy False Goldenaster) 7147
Photo Details
Common Name Hairy False Goldenaster
Scientific Name Heterotheca villosa
Family Asteraceae
(Sunflower)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 130 mm
Aperture f/16
Speed 1/160 sec.
ISO 1600
More Photos and Plant Details
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NEW! Hymenopappas filifolius var. polycephalus (Manyhead Hymenopappus) 7526
Photo Details
Common Name Manyhead Hymenopappus
Scientific Name Hymenopappus filifolius var. polycephalus
Family Asteraceae
(Sunflower)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/320 sec.
ISO 800
More Photos and Plant Details
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NEW! Lepidium latifolium (Broadleaf Pepperweed) 7044
Photo Details
Common Name Broadleaf Pepperweed
Scientific Name Lepidium latifolium
Family Brassicaceae
(Mustard)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/18
Speed 1/200 sec.
ISO 5600
More Photos and Plant Details
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NEW! Lygodesmia juncea (Rush Skeletonweed) 7882
Photo Details
Common Name Rush Skeletonweed
Scientific Name Lygodesmia juncea
Family Asteraceae
(Sunflower)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/250 sec.
ISO 800
More Photos and Plant Details
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NEW! Machaeranthera tanacetifolia (Tanseyleaf Aster) 7346
Photo Details
Common Name Tanseyleaf Aster
Scientific Name Machaeranthera tanacetifolia
Family Asteraceae
(Sunflower)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 170 mm
Aperture f/16
Speed 1/200 sec.
ISO 2200
More Photos and Plant Details
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NEW! Mirabilis albida (White Four O’clock) 7087
Photo Details
Common Name White Four O'clock
Scientific Name Mirabilis albida
Family Nyctaginaceae
(Four O'clock)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 160 mm
Aperture f/14
Speed 1/320 sec.
ISO 800
More Photos and Plant Details
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NEW! Oenothera cespitosa ssp. cespitosa (Tufted Evening Primrose) 7710
Photo Details
Common Name Tufted Evening Primrose
Scientific Name Oenothera cespitosa ssp. cespitosa
Family Onagraceae
(Evening Primrose)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/18
Speed 1/1000 sec.
ISO 2000
More Photos and Plant Details
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Oenothera coronopifolia (Cut-leaf Evening Primrose) 7293
Photo Details
Common Name Cut-leaf Evening Primrose
Scientific Name Oenothera coronopifolia
Family Onagraceae
(Evening Primrose)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 130 mm
Aperture f/20, Shutter Priority
Speed 1/200 sec.
ISO 800
More Photos and Plant Details
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NEW! Oenothera lavandulifolia (Lavender-leaf Sundrops) 7398
Photo Details
Common Name Lavender-leaf Sundrops
Scientific Name Oenothera lavandulifolia
Family Onagraceae
(Evening Primrose)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/400 sec.
ISO 2000
More Photos and Plant Details
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NEW! Oenothera suffrutescens (Scarlet Gaura) 7840
Photo Details
Common Name Scarlet Gaura
Scientific Name Oenothera suffrutescens
Family Onagraceae
(Evening Primrose)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/640 sec.
ISO 800
More Photos and Plant Details
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NEW! Oenothera villosa ssp. villosa (Hairy Evening Primrose) 7863
Photo Details
Common Name Hairy Evening Primrose
Scientific Name Oenothera villosa ssp.villosa
Family Onagraceae
(Evening Primrose)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/200 sec.
ISO 800
More Photos and Plant Details
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Opuntia polyacantha var. polyacantha (Plains Prickly Pear) 7990
Photo Details
Common Name Plains Prickly Pear
Scientific Name Opuntia polyacantha var. polyacantha
Family Cactaceae
(Cactus)
Date June 26, 2021
Location Along CR 12 west of Pawnee Buttes, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 105 mm
Aperture f/16
Speed 1/400 sec.
ISO 1600
More Photos and Plant Details
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Pediomelum digitatum (Palmleaf Indian Breadroot) 7942
Photo Details
Common Name Palmleaf Indian Breadroot
Scientific Name Pediomelum digitatum
Family Fabaceae
(Pea)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/320 sec.
ISO 1600
More Photos and Plant Details
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NEW! Penstemon albidus (White Penstemon) 7967
Photo Details
Common Name White Penstemon
Scientific Name Penstemon albidus
Family Plantaginaceae
(Plantain)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/500 sec.
ISO 1600
More Photos and Plant Details
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Peritoma serrulata (Rocky Mountain Beeplant) 7309
Photo Details
Common Name Rocky Mountain Beeplant
Scientific Name Peritoma serrulata
Family Cleomaceae
(Cleome)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 105 mm
Aperture f/14, Shutter Priority
Speed 1/200 sec.
ISO 2000
More Photos and Plant Details
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NEW! Phlox andicola (Plains Phlox) 7815
Photo Details
Common Name Plains Phlox
Scientific Name Phlox andicola
Family Polemoniaceae
(Phlox)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/14
Speed 1/500 sec.
ISO 800
More Photos and Plant Details
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NEW! Phyla cuneifolia (Wedgeleaf Fogfruit) 7031
Photo Details
Common Name Wedgeleaf Fogfruit
Scientific Name Phyla cuneifolia
Family Verbenaceae
(Verbena)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/13
Speed 1/200 sec.
ISO 800
More Photos and Plant Details
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NEW! Physaria ludoviciana (Foothill Bladderpod) 7584
Photo Details
Common Name Foothill Bladderpod
Scientific Name Physaria ludoviciana
Family Brassicaceae
(Mustard)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/400 sec.
ISO 2000
More Photos and Plant Details
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NEW! Plantago patagonica (Woolly Plantain) 7994
Photo Details
Common Name Woolly Plantain
Scientific Name Plantago patagonica
Family Plantaginaceae
(Plantain)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 105 mm
Aperture f/16
Speed 1/200 sec.
ISO 1600
More Photos and Plant Details
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NEW! Polanisia dodecandra ssp. trachysperma (Redwhisker Clammyweed) 7238
Photo Details
Common Name Redwhisker Clammyweed
Scientific Name Polanisia dodecandra ssp. trachysperma
Family Cleomaceae
(Cleome)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/18
Speed 1/250 sec.
ISO 800
More Photos and Plant Details
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NEW! Psoralidium tenuiflorum (Slimflower Scurfpea) 7428
Photo Details
Common Name Slimflower Scurfpea
Scientific Name Psoralidium tenuiflorum
Family Fabaceae
(Pea)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/200 sec.
ISO 2000
More Photos and Plant Details
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Ratibida columnifera (Prairie Coneflower) 8038
Photo Details
Common Name Plains Coneflower
Scientific Name Ratibida columnifera
Family Asteraceae
(Sunflower)
Date June 26, 2021
Location Along CR 12 west of Pawnee Buttes, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/400 sec.
ISO 1600
More Photos and Plant Details
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NEW! Solanum rostratum (Buffalo Bur) 7287
Photo Details
Common Name Buffalo Bur
Scientific Name Solanum rostratum
Family Solanaceae
(Nightshade)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/14
Speed 1/320 sec.
ISO 800
More Photos and Plant Details
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NEW! Symphoricarpos occidentalis (Western Snowberry) 7108
Photo Details
Common Name Western Snowberry
Scientific Name Symphoricarpos occidentalis
Family Caprifoliaceae
(Honeysuckle)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/125 sec.
ISO 800
More Photos and Plant Details
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Sphaeralcea coccinea (Scarlet Globemallow) 7323
Photo Details
Common Name Scarlet Globemallow
Scientific Name Sphaeralcea coccinea
Family Malvaceae
(Mallow)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/200 sec.
ISO 2500
More Photos and Plant Details
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NEW! Tetraneuris acaulis var. acaulis (Stemless Four-nerve Daisy) 7544
Photo Details
Common Name Stemless Four-nerve Daisy
Scientific Name Tetraneuris acaulis var. acaulis
Family Asteraceae
(Sunflower)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/250 sec.
ISO 2000
More Photos and Plant Details
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NEW! Thelesperma megapotamicum (Hopi Tea Greenthread) 7918
Photo Details
Common Name Hopi Tea Greenthread
Scientific Name Thelesperma magapotamicum
Family Asteraceae
(Sunflower)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 105 mm
Aperture f/14
Speed 1/250 sec.
ISO 800
More Photos and Plant Details
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NEW! Tribulus terrestris (Puncture Vine) 7219
Photo Details
Common Name Puncture Vine
Scientific Name Tribulus terrestris
Family Zygophyllaceae
(Caltrop)
Date June 25, 2021
Location Oregon Trail Recreation Area, Sterling, Logan County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/14
Speed 1/250 sec.
ISO 800
More Photos and Plant Details
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NEW! Verbena stricts (Hoary Verbena) 7690
Photo Details
Common Name Hoary Verbena
Scientific Name Verbena stricta
Family Verbenaceae
(Verbena)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 180 mm
Aperture f/16
Speed 1/500 sec.
ISO 2000
More Photos and Plant Details
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NEW! Yucca glauca (Great Plains Yucca) 7600
Photo Details
Common Name Great Plains Yucca
Scientific Name Yucca glauca
Family Asparagaceae
(Asparagus)
Date June 26, 2021
Location Pawnee Buttes Trail, Pawnee National Grassland, Weld County
Camera Nikon D810
Lens Nikkor-Micro 70-180mm f/4.5-5.6
Focal Length 140 mm
Aperture f/16
Speed 1/800 sec.
ISO 2000
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© Tom Lebsack 2023

Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County