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
Escobaria vivipara v. rosea	RP 1	USA : Nevada (Nye County)
Mammillaria tetrancistra	RP 2	USA : Nevada (Nye County)
Pediocactus simpsonii v. minor	RP 3	USA : Colorado (Montezuma County)
Pediocactus simpsonii v. minor	RP 4	USA : Colorado (Ouray County)
Pediocactus simpsonii v. nigrispinus	RP 5	USA : Washington (Yakima County)
Pediocactus simpsonii v. minor	RP 6	USA : Utah (Abajo Mts, San Juan County)
Sclerocactus mesae-verdae	RP 7	USA : Colorado (Montezuma County)
Sclerocactus cloveriae v. heilii	RP 8	USA : New Mexico (San Juan County)
Sclerocactus parviflorus	RP 9	USA : Colorado (Montrose County)
Sclerocactus parviflorus	RP 10	USA : Colorado (Montezuma County)
Sclerocactus parviflorus	RP 12	USA : Utah (Garfield County)
Sclerocactus parviflorus	RP 13	USA : New Mexico (San Juan County)
Sclerocactus polyancistrus	RP 14	USA : Nevada (Nye County)
Sclerocactus polyancistrus	RP 15	USA : Nevada (Nye County)
Sclerocactus spinosior v. schleseri	RP 16	USA : Nevada (Lincoln County)
Agave utahensis v. eborispina	RP 17	USA : Nevada (Nye County)
Pediocactus despainii	RP 18	USA : Utah (Emery)
Pediocactus simpsonii v. simpsonii	RP 20	USA : Nevada (White Pine County)
Pediocactus simpsonii v. simpsonii	RP 21	USA : Nevada (White Pine County)
Sclerocactus parviflorus	RP 22	USA : New Mexico (Chaco River, San Juan County)
Sclerocactus mesae-verdae	RP 23	USA : New Mexico (San Juan County)
Pediocactus simpsonii v. robustior	RP 24	USA : Nevada (Humboldt County)
Sclerocactus wetlandicus v. ilseae	RP 25	USA : Utah (Uintah County)
Sclerocactus nyensis	RP 26	USA : Nevada (Nye County)
Sclerocactus nyensis	RP 27	USA : Nevada (Nye County)
Sclerocactus parviflorus	RP 28	USA : Utah (Duchesne County)
Sclerocactus parviflorus v. contortus	RP 29	USA : Utah (San Juan County)
Echinocereus engelmannii v. chrysocentrus	RP 30	USA : Nevada (Nye Busted, Nye County)
Agave utahensis v. eborispina	RP 31	USA : Nevada (Clark County)
Agave utahensis v. nevadensis	RP 32	USA : Nevada (Clark County)
Escobaria sp. nova	RP 33	USA : Arizona (Navajo County)
Echinomastus johnsonii	RP 34	USA : Nevada (Clark County)
Echinocactus polycephalus	RP 35	USA : Nevada (Clark County)
Sclerocactus parviflorus	RP 36	USA : Colorado (Montezuma County)
Sclerocactus parviflorus	RP 37	USA : Colorado (Montezuma County)
Sclerocactus parviflorus	RP 38	USA : Utah (San Juan County)
Pediocactus sileri	RP 39	USA : Arizona (Mohave County)
Pediocactus simpsonii v. minor	RP 40	USA : Colorado (Jefferson County)
Pediocactus simpsonii	RP 41	USA : Colorado (Mount Princeton, Chaffee County)
Sclerocactus cloveriae v. reevesii	RP 42	USA : New Mexico (San Juan County)
Opuntia pulchella	RP 43	USA : Nevada (Nye County)
Escobaria vivipara v. desertii	RP 44	USA : extreme South Nevada (Clark County)
Echinocereus triglochidiatus v. mojavensis	RP 45	USA : Nevada (Wilson Pass, Clark County)
Escobaria vivipara v. desertii	RP 46	USA : Nevada (Kyle Cyn, Clark County, 4000 feet)
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)
Echinocereus coccineus	RP 49	USA : New Mexico (McKinley County)
Toumeya papyracantha	RP 50	USA : Arizona (SE Holbrook, Navajo County)
Sclerocactus whipplei	RP 51	USA : Arizona (Navajo County)
Echinocereus triglochidiatus v. gonacanthus	RP 52	USA : New Mexico (Otero County)
Pediocactus simpsonii	RP 53	USA : Colorado (Montezuma County)
Pediocactus simpsonii	RP 54	USA : Utah (La Sal Mountains, San Juan County)
Sclerocactus mesae-verdae	RP 55	USA : New Mexico (San Juan County)
Sclerocactus parviflorus	RP 56	USA : Utah (San Juan County)
Sclerocactus parviflorus	RP 57	USA : Utah (Grand County, 7000 feet)
Sclerocactus wetlandicus	RP 58	USA : Utah (Uintah County)
Sclerocactus wetlandicus	RP 59	USA : Utah (Uintah County)
Pediocactus simpsonii v. minor	RP 60	USA : Colorado (Monarch Pass, Chaffee County)
Sclerocactus whipplei	RP 61	USA : Arizona (Apache County)
Sclerocactus whipplei	RP 62	USA : Arizona (Navajo County)
Pediocactus simpsonii	RP 63	USA : Utah (Near Arizona / Utah border, Kane County)
Mammillaria tetrancistra	RP 64	USA : Nevada (Clark County)
Echinocereus viridiflorus	RP 65	USA : New Mexico (Philmont, Colfax County)
Mammillaria grahamii v. grahamii	RP 66	USA : New Mexico (Otero County)
Sclerocactus parviflorus	RP 67	USA : Colorado (McElmo Canyon stops, Montezuma County)
Sclerocactus parviflorus	RP 68	USA : Colorado (McElmo Canyon stops, Montezuma County)
Sclerocactus parviflorus	RP 69	USA : Colorado (McElmo Canyon stops, Montezuma County)
Echinocereus fasciculatus v. fasciculatus	RP 70	USA : Arizona (Mammoth, Pinal County)
Echinocereus fasciculatus v. bonkerae	RP 71	USA : Arizona (Oracle, Pinal County)
Agave toumeyana v. toumeyana	RP 72	USA : Arizona (Pinal County)
Echinocereus nicholii	RP 73	USA : Arizona (Silver Bell Mountains, Pima County)
Ferocactus acanthodes v. eastwoodiae	RP 74	USA : Arizona (Pinal County)
Echinocereus engelmannii v. purpureus	RP 75	USA : Utah (St. George, Washington County)
Peniocereus greggii	RP 76	USA : Arizona (Cochise County)
Mammillaria grahamii v. oliviae	RP 77	USA : New Mexico (Hidalgo County)
Mammillaria meridorosei	RP 78	USA : New Mexico (Hidalgo County)
Sclerocactus parviflorus	RP 79	USA : Utah (Lockhart Canyon, San Juan County)
Pediocactus paradinei	RP 80	USA : Arizona (Coconino County)
Escobaria missouriensis	RP 81	USA : Colorado (Montrose County)
Sclerocactus glaucus	RP 82	USA : Colorado (South-West of Delta County)

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