Jim Conrad's Naturalist Newsletter: Selected 
 CACTI 

You can browse observation-linked thumbnails of all species of cacti documented by Jim at the iNaturalist website.

 SHORTCUTS TO MAJOR GROUPS: 
  Barrel Cacti | Beehive Cacti (Coryphantha) | Mammilarias | Chollas/Pencil Cacti | Pricklypears 

  • Barrel Cacti (ribbed)
    1. Devil's Tongue (Ferocactus latispinus ssp latispinus)
    2. Ferocactus echidne
    3. Ferocactus histrix
    4. Fire Barrel (Ferocactus pilosus)
    5. Giant Barrel (Echinocactus platyacanthus)
    6. Texas Barrel (Ferocactus hamatacanthus)
  • Beehive Cacti (knobby or "tuberculate")
    1. Golden-chested Beehive (Coryphantha erecta)
    2. Beehive (Coryphantha octacantha)
    3. Beehive (Coryphantha salinensis)
    4. Nipple Cactus, Groved (Coryphantha sulcata)
    5. Rhinocerous Cactus (Coryphantha cornifera)
  • "Biznaga" (Stenocactus crispatus)
  • "Biznaga" (Stenocactus obvallatus)
  • Blade-apple Cactus (Pereskia aculeata)
  • Cactus Leaves
  • Candelabra Cactus (Stenocereus dumotieri)
  • Chollas/Pencil Cacti, genus Cylindropuntia
    1. Cholla, Sheathed (Cylindropuntia tunicata)
    2. Cholla, Tree (Cylindropuntia imbricata)
    3. Pencil Cactus, Klein's (Cylindropuntia kleiniae)
    4. Tasajillo Cylindropuntia leptocaulis
  • Claret-cup (Echinocereus coccineus)
  • Climbing Cactus (Epiphyllum hookeri spp. guatemalense)
  • Garambullo (Myrtillocactus geometrizans)
  • Devil's Gut (Deamia testudo)
  • Hedgehog (Echinocereus cinerascens)
  • Hedgehog, Lace (Echinocereus reichenbachii)
  • Horse-Crippler (Thelocactus rinconensis)
  • Ladyfinger Cactus (Echinocereus pentalophus)
  • Mammillarias (knobby or "tuberculate")
    1. Ladyfinger Cactus (Mammillaria elongata)
    2. Mammillaria erythrosperma)
    3. Mammillaria, Gaumer's (Mammillaria gaumeri)
    4. Nipple Cactus (Mammillaria vetula ssp. vetula)
    5. Owl Eye Cactus (Mammillaria perbella)
    6. Pincushion (Mammillaria compressa ssp. compressa)
    7. Pincushion, Bird's-nest (Mammillaria decipiens)
    8. Pincushion, Mexican (Mammillaria magnimamma)
  • Mexican Fencepost Cactus (Lophocereus marginatus)
  • Mistletoe Cactus (Rhipsalis baccifera)
  • Cephalocereus polylophus
  • Night-blooming Cereus (Acanthocereus tetragonus)
  • Night-blooming Cereus (Hylocereus undatus)
  • Organ Pipe (Stenocereus laevigatus)
  • Organ Pipe (Stenocereus huastecorum)
  • Peyote, False (Lophophora diffusa)
  • Pitaya (Hylocereus)
  • Pricklypears (genera Opuntia and Nopalea)
    1. Bunny-ears (Opuntia microdasys)
    2. Cardona Pear (Opuntia streptacantha)
    3. Coastal Pricklypear (Opuntia stricta)
    4. Cochineal Nopal Cactus (Nopalea cochenillifera)
    5. Nopal Cactus Opuntia ficus-indica
    6. Nopal Cactus, Wild (Nopalea inaperta)
    7. Opuntia atrispina
    8. Opuntia depressa
    9. Opuntia dillenii
    10. Opuntia engelmannii
    11. Opuntia humifusa "Eastern"
    12. Opuntia macrorhiza "Western"
    13. Opuntia stenopetala
    14. Rzedowski's Pricklypear (Opuntia rzedowskii)
    15. Spineless Pricklypear (Opuntia cacanapa)
    16. Tulip Pricklypear (Opuntia phaeacantha)
    17. Tunitas (Opuntia auberi)
    18. Velvet Bur Cactus (Opuntia pubescens)
    19. Velvet Pricklypear (Opuntia tomentosa)
  • Queen-of-the-night ( Selenicereus grandiflorus)
  • Rat-tail Cactus (Aporocactus flagelliformis)
  • Sabucán (Pilosocereus gaumeri)
  • Snake Cactus (Nyctocereus serpentinus)