172 Fields number on the database for Ralph Peters

All Agave Ariocarpus Bursera Coryphantha Dudleya Echinocactus Echinocereus Echinomastus Escobaria Ferocactus Glandulicactus Mammillaria Opuntia Pediocactus Peniocereus Sclerocactus Thelocactus Toumeya      

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20 - 40 - 80

Species	Field number	Locality	Picture
Bursera microphylla	RP 143	USA : Arizona (Tucson Pima)
Pediocactus peeblesianus ssp. fickeisenii	RP 145	USA : Arizona (Wolf Hole)
Echinocereus reichenbachii	RP 146	USA : Colorado (Pueblo Reservoir Pueblo)
Echinocereus reichenbachii	RP 147	USA : Oklahoma (Roger Mills)
Ferocactus viridescens v. littoralis	RP 148	Mexicó : Baja California Norte ()
Ferocactus fordii v. grandiflorus	RP 149	Mexicó : Baja California Sur ()
Escobaria missouriensis v. marstonii	RP 150	USA : Arizona (Mohave)
Echinocereus triglochidiatus v. toroweapensis	RP 151	USA : Arizona (Toroweap Point Mohave)
Echinocactus texensis	RP 152	USA : New Mexico (Roosevelt)
Sclerocactus parviflorus	RP 153	USA : New Mexico (Valencia)
Echinocereus pectinatus v. dasyacanthus	RP 154	USA : New Mexico (South of Carlsbad Eddy)
Echinocereus engelmannii	RP 155	USA : Nevada (North of Las Vegas Clark)
Agave utahensis v. eborispina	RP 156	USA : Nevada (Peek-a-boo Canyon Clark)
Agave utahensis v. eborispina	RP 157	USA : Nevada (North of Las Vegas Clark)
Pediocactus peeblesianus v. fickeiseniae	RP 158	USA : Arizona (A Colorado River overlook Coconino)
Glandulicactus wrightii	RP 159	USA : Texas (West of Terlingua Brewster)
Ariocarpus fissuratus	RP 160	USA : Texas (West of Terlingua Brewster)
Thelocactus bicolor v. bicolor	RP 161	USA : Texas (West of Lajitas Brewster)
Coryphantha macromeris	RP 162	USA : New Mexico (South of Carlsbad Eddy)
Thelocactus bicolor / flavidispinus	RP 163	USA : Texas (BBRSP Presidio)
Sclerocactus wrightiae	RP 164	USA : Utah (Wayne)
Sclerocactus parv-wrightiae	RP 165	USA : Utah (Wayne)
Opuntia basilaris v. heilii	RP 166	USA : Utah (Wayne)
Echinocereus triglochidiatus v. mojavensis	RP 167	USA : California (Inyo)
Agave utahensis v. eborispina	RP 168	USA : Nevada (Lincoln)
Escobaria vivipara v. desertii	RP 169	USA : Nevada (West of Las Vegas Clark)
Agave utahensis v. kaibabensis	RP 170	USA : Arizona (Coconino)
Sclerocactus wetlandicus	RP 171	USA : Utah (Duchesne)
Sclerocactus wetlandicus 'brevispinus'	RP 172	USA : Utah (Duchesne)
Sclerocactus parviflorus	RP 173	USA : Utah (North-East of Wellington Carbon)
Pediocactus simpsonii	RP 174	USA : Utah (Duchesne)
Sclerocactus wetlandicus	RP 175	USA : Utah (Uintah)

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