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
Echinocereus coccineus	RP 49	USA : New Mexico (McKinley County)
Echinocereus engelmannii v. chrysocentrus	RP 30	USA : Nevada (Nye Busted, Nye County)
Echinocereus engelmannii	RP 155	USA : Nevada (North of Las Vegas Clark)
Echinocereus engelmannii v. purpureus	RP 75	USA : Utah (St. George, Washington County)
Echinocereus fasciculatus v. fasciculatus	RP 70	USA : Arizona (Mammoth, Pinal County)
Echinocereus fasciculatus v. fasciculatus	RP 124	USA : Arizona (Coconino County)
Echinocereus fasciculatus v. bonkerae	RP 71	USA : Arizona (Oracle, Pinal County)
Echinocereus nicholii	RP 73	USA : Arizona (Silver Bell Mountains, Pima County)
Echinocereus pectinatus v. dasyacanthus	RP 154	USA : New Mexico (South of Carlsbad Eddy)
Echinocereus pseudopectinatus	RP 112	USA : Arizona (Perilla Mountains, Cochise County)
Echinocereus reichenbachii	RP 147	USA : Oklahoma (Roger Mills)
Echinocereus reichenbachii	RP 146	USA : Colorado (Pueblo Reservoir Pueblo)
Echinocereus reichenbachii v. perbellus	RP 121	USA : Colorado (Otero County)
Echinocereus reichenbachii v. perbellus	RP 97	USA : New Mexico (Eddy County)
Echinocereus reichenbachii v. perbellus	RP 141	USA : New Mexico (Pecos River Eddy)
Echinocereus triglochidiatus v. gonacanthus	RP 52	USA : New Mexico (Otero County)
Echinocereus triglochidiatus v. inermis	RP 90	USA : Colorado (Mesa County)
Echinocereus triglochidiatus v. toroweapensis	RP 151	USA : Arizona (Toroweap Point Mohave)
Echinocereus triglochidiatus v. mojavensis	RP 167	USA : California (Inyo)
Echinocereus triglochidiatus	RP 114	USA : New Mexico (Cibola County)
Echinocereus triglochidiatus v. inermis	RP 105	USA : Colorado (Montrose County)
Echinocereus triglochidiatus v. mojavensis	RP 45	USA : Nevada (Wilson Pass, Clark County)
Echinocereus viridiflorus	RP 88	USA : New Mexico (Fort Union, Mora County)
Echinocereus viridiflorus	RP 65	USA : New Mexico (Philmont, Colfax County)
Echinocereus x roetteri	RP 125	USA : New Mexico (Otero County)
Echinomastus johnsonii	RP 34	USA : Nevada (Clark County)
Escobaria missouriensis v. marstonii	RP 150	USA : Arizona (Mohave)
Escobaria missouriensis	RP 81	USA : Colorado (Montrose County)
Escobaria sp. nova	RP 33	USA : Arizona (Navajo County)
Escobaria vivipara v. vivipara	RP 113	USA : New Mexico (Mora County)
Escobaria vivipara v. desertii	RP 46	USA : Nevada (Kyle Cyn, Clark County, 4000 feet)
Escobaria vivipara v. rosea	RP 1	USA : Nevada (Nye County)
Escobaria vivipara v. desertii-rosea	RP 47	USA : Nevada (Kyle Cyn, Clark County, 6000 feet)
Escobaria vivipara v. rosea	RP 48	USA : Nevada (Kyle Cyn, Clark County, 7000 feet)
Escobaria vivipara v. desertii	RP 169	USA : Nevada (West of Las Vegas Clark)
Escobaria vivipara v. desertii	RP 44	USA : extreme South Nevada (Clark County)
Ferocactus acanthodes v. eastwoodiae	RP 74	USA : Arizona (Pinal County)
Ferocactus fordii v. grandiflorus	RP 149	Mexicó : Baja California Sur ()
Ferocactus viridescens v. littoralis	RP 148	Mexicó : Baja California Norte ()
Ferocactus viridescens	RP 99	USA : California (San Diego County)

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