Allionia incarnata
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 8 August 2004
Aloysia wrightii
6 km east of Robles Junction, Pima County, Arizona, USATaken by RL Minckley on 14 August 2010
Argemone pleicantha
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 9 May 2006
Argemone pleicantha
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 29 April 2005
Corydalis aurea
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 8 April 2005
Cylindropuntia spinosior
San Bernardino Valley, Cochise County, Arizona, USATaken by RL Minckley on 20 April 2005
Erysimum capitatum
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 8 April 2005
Eschscholzia californica
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 25 April 2002
Hymenoxys odorata
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 30 May 2004
Larrea tridentata
Imperial County, California, USATaken by RL Minckley on 8 March 2010
Lepidium thurberi
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 30 May 2004
Lepidium thurberi
Close-up of flowersSan Bernardino Valley, Sonora, MexicoTaken by T Pasqualucci on 19 August 2005
Mentzelia albicaulis
Sulfur Springs Valley, Cochise County, Arizona, USATaken by RL Minckley on 7 August 2018
Opuntia engelmannii
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 7 May 2005
Opuntia santa-rita
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 25 May 2007
Peniocereus greggii
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 14 May 2004
Peniocereus greggii
Close-up of flowersSan Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 14 May 2004
Peniocereus greggii
FruitTaken by RL Minckley on 11 August 2011
Phacelia arizonica
San Bernardino Valley, Sonora, Mexico
Taken by RL Minckley on 24 March 2005
Phacelia arizonica
Close-up of flowers
San Bernardino Valley, Sonora, Mexico
Taken by RL Minckley on 24 March 2005
Phacelia crenulata
Taken by RL Minckley on 22 April 2005
Phacelia glandulosa
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 12 April 2005
Physaria gordoni
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 18 March 2007
Proboscidea althaeifolia
with female Perdita hurdi, its only known pollen specialist bee speciesSan Bernardino Valley, Sonora, MexicoTaken by C Mayer on 6 August 2007
Proboscidea parviflora
Sulfur Springs Valley, Cochise County, Arizona, USATaken by RL Minckley on 5 August 2017
Sphaeralcea laxa
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 25 April 2002
Sphaeralcea laxa
Close-up of flowerSan Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 25 April 2002
Streptanthus arizonicus
San Bernardino Valley, Sonora, MexicoTaken by RL Minckley on 24 March 2005