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, 44 in all.

D81_6660%20Small
NEW! Apocynum cannabinum (Indian Hemp) 7122
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
D81_6660%20Small
NEW! Argemone polyanthemos (Crested Prickly Poppy) 7324
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
D81_6660%20Small
NEW! Astragalus flexuosus (Flexible Milkvetch) 7554
Common Name Flexible Milkvetch
Scientific Name Astragalus flexuosus
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
D81_6660%20Small
NEW! Astragalus gracilis (Slender Milkvetch) 7437
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
D81_6660%20Small
NEW! Astragalus kentrophyta (Spiny Milkvetch) 7566
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
D81_6660%20Small
NEW! Astragalus laxmannii var. robustior (Prairie Milkvetch) 7921
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
D81_6660%20Small
NEW! Berteroa incana (Hoary False Alyssum) 7181
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
D81_6660%20Small
NEW! Cirsium canescens (Prairie Thistle) 7758
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
D81_6660%20Small
NEW! Conium maculatum (Poison Hemlock) 7255
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
D81_6660%20Small
NEW! Croton texensis (Texas Croton) 7151
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
D81_6660%20Small
NEW! Cryptantha cinerea var. jamesii (James’ Cryptantha) 7385
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
D81_6660%20Small
NEW! Cryptantha minima (Little Cryptantha) 7363
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
D81_6660%20Small
NEW! Cryptantha thyrsiflora (Calcareous Cryptantha) 7778
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
D81_6660%20Small
NEW! Dalea candida (Prairie White Clover) 7463
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
D81_6660%20Small
NEW! Delphinium carolinianum ssp. virescens (Plains Larkspur) 8055-2
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
D81_6660%20Small
NEW! Delphinium geyeri (Geyer’s Larkspur) 8034
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
D81_6660%20Small
NEW! Eremogone hookeri var. hookeri (Hooker’s Sandwort) 7726
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
D81_6660%20Small
NEW! Erigeron bellidiastrum (Pretty Daisy) 7636
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
D81_6660%20Small
NEW! Eriogonum alatum var. alatum (Winged Buckwheat)  7491
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
D81_6660%20Small
NEW! Eriogonum ovalifolium var. purpureum (Purple Cushion Buckwheat) 7520
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
D81_6660%20Small
NEW! Euphorbia esula (Leafy Spurge) 7058
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
D81_6660%20Small
NEW! Helianthus petiolaris ssp. petiolaris (Prairie Sunflower) 7875
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
D81_6660%20Small
Heterotheca villosa (Hairy False Goldenaster) 7147
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
D81_6660%20Small
NEW! Hymenopappas filifolius var. polycephalus (Manyhead Hymenopappus) 7526
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
D81_6660%20Small
NEW! Lepidium latifolium (Broadleaf Pepperweed) 7044
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
D81_6660%20Small
NEW! Lygodesmia juncea (Rush Skeletonweed) 7882
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
D81_6660%20Small
NEW! Machaeranthera tanacetifolia (Tanseyleaf Aster) 7346
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
D81_6660%20Small
Medicago sativa (Wild Alfalfa) 7428
Common Name Wild Alfalfa
Scientific Name Medicago sativa
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
D81_6660%20Small
NEW! Mirabilis albida (White Four O’clock) 7087
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
D81_6660%20Small
NEW! Oenothera cespitosa ssp. cespitosa (Tufted Evening Primrose) 7710
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
D81_6660%20Small
Oenothera coronopifolia (Cut-leaf Evening Primrose) 7293
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
D81_6660%20Small
NEW! Oenothera lavandulifolia (Lavender-leaf Sundrops) 7398
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
D81_6660%20Small
NEW! Oenothera suffrutescens (Scarlet Gaura) 7840
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
D81_6660%20Small
NEW! Oenothera villosa ssp. villosa (Hairy Evening Primrose) 7863
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
D81_6660%20Small
Opuntia polyacantha var. polyacantha (Plains Prickly Pear) 7990
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
D81_6660%20Small
Pediomelum digitatum (Palmleaf Indian Breadroot) 7942
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
D81_6660%20Small
NEW! Penstemon albidus (White Penstemon) 7967
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
D81_6660%20Small
Peritoma serrulata (Rocky Mountain Beeplant) 7309
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
D81_6660%20Small
NEW! Phlox andicola (Plains Phlox) 7815
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
D81_6660%20Small
NEW! Phyla cuneifolia (Wedgeleaf Fogfruit) 7031
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
D81_6660%20Small
NEW! Physaria ludoviciana (Foothill Bladderpod) 7584
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
D81_6660%20Small
NEW! Plantago patagonica (Woolly Plantain) 7994
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
D81_6660%20Small
NEW! Polanisia dodecandra ssp. trachysperma (Redwhisker Clammyweed) 7238
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
D81_6660%20Small
Ratibida columnifera (Prairie Coneflower) 8038
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
D81_6660%20Small
NEW! Solanum rostratum (Buffalo Bur) 7287
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
D81_6660%20Small
NEW! Symphoricarpos occidentalis (Western Snowberry) 7108
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
D81_6660%20Small
Sphaeralcea coccinea (Scarlet Globemallow) 7323
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
D81_6660%20Small
NEW! Tetraneuris acaulis var. acaulis (Stemless Four-nerve Daisy) 7544
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
D81_6660%20Small
NEW! Thelesperma megapotamicum (Hopi Tea Greenthread) 7918
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
D81_6660%20Small
NEW! Tribulus terrestris (Puncture Vine) 7219
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
D81_6660%20Small
NEW! Verbena stricts (Hoary Verbena) 7690
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
D81_6660%20Small
NEW! Yucca glauca (Great Plains Yucca) 7600
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

© Tom Lebsack 2022

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