Some Friedrich Ritter field collection numbers of potential interest to readers
FR 17 Trichocereus terscheckioides (Famatina, La Rioja?, Argentina)
FR 17 Trichocereus terscheckioides (31 km North of Tucumán, Argentina)
FR 17 Trichocereus terscheckioides (Famatina, La Rioja, Argentina)
FR 26 Trichocereus terscheckii (Betania, Salta, Argentina)
FR 26 Trichocereus terscheckii (Tacuarandi, Tarija, Bolivia; 1958/04)
FR 26 Trichocereus terscheckii (60 km South of Salta, Salta, Argentina)
FR 70 Trichocereus werdermannianus (Chuquisaca, Bolivia)
FR 70 Trichocereus werdermannianus (Tupiza, Potosí, Bolivia)
FR 70 Trichocereus werdermannianus (Near Cieneguillas, Tarija, Bolivia; 1958/04)
FR 72 Trichocereus tacaquirensis (Bolivia 1955)
FR 72 Trichocereus tacaquirensis (Tupiza, East of river, Potosí, Bolivia)
FR 72 Trichocereus tacaquirensis (Tupiza, Potosí, Bolivia)
FR 72 Trichocereus tacaquirensis (Curque, Tarija, Bolivia 1953)
FR 72 Trichocereus tacaquirensis (Tupiza, Potosí, Bolivia 1962)
FR 72 Trichocereus tacaquirensis (Cieneguillas, Tarija, Bolivia 1962)
FR 101 Trichocereus bridgesii (Mecapaca, La Paz, Bolivia)
FR 101 Trichocereus bridgesii (Near La Paz, Abrajes, La Paz, Bolivia 03/1953)
FR 155 Trichocereus peruvianus
FR 155a Trichocereus tacnaensis (var Estique)
FR 156 Trichocereus knuthianus
FR 270 Trichocereus glaucus
FR 270a Trichocereus glaucus (Camaraca, Tarapacá, Chile) (forma pendens)
FR 567 Trichocereus pachanoi
FR 567a Trichocereus santaensis
FR 615 Trichocereus crassicostatus (Bolivia)
FR 676 Trichocereus pallarensis
FR 677 Trichocereus knuthianus
FR 677a Trichocereus cuzcoensis
FR 853 Trichocereus crassicostatus (Río Cajas, Tarija, Bolivia)
FR 853 Trichocereus crassicostatus (La Merced – Río Negro, Tarija, Bolivia)
FR 853 Trichocereus crassicostatus (Below Tarija city, on Río Tarija, Tarija, Bolivia)
FR 853 Trichocereus crassicostatus (Angosto, Tarija, Bolivia)
FR 856 Trichocereus riomizquiensis
FR 991 Trichocereus scopulicola (Tapecua, Tarija, Bolivia 1000-1500m)
FR 991 Trichocereus scopulicola (Cañada – Palos Blancos, 24 km West of Palos Blancos, Tarija, Bolivia 1000-1500m)
FR 993 Trichocereus terscheckioides (Cafayate, Salta, Argentina)
FR 993 Trichocereus terscheckioides (Famatina, La Rioja, Argentina)
FR 993 Trichocereus terscheckioides (54 km West of Belén, Catamarca, Argentina)
FR 994 Trichocereus tacnaensis
FR 1467 Trichocereus torataensis
FR 1468 Trichocereus pallarensis (forma Machac)
Be aware that there are many databases which list Knize numbers but omit many of Knize’s actual applications of those numbers. Confusion is prevented by their recognition not their avoidance.
A great collection of collection numbers can be found at Ralph Martin website (the above list was assembled using data from there and from Ritter’s Kakteen in Sudamerika)
By number: http://ralph.cs.cf.ac.uk/Cacti/fieldno.html
By name: http://ralph.cs.cf.ac.uk/Cacti/finder.html