As of 2023, 71 species of Santalales have been observed in iNaturalist in the US and 892 throughout the world.

• FAMILY AMPHOROGYNACEAE
• FAMILY APTANDRACEAE
• FAMILY BALANOPHORACEAE
• FAMILY CERVANTESIACEAE
  • Buffalo-Nut (Pyrularia pubera) - 2 (Great Smoky Mountains NP)
• FAMILY COMANDRACEAE
  • Bastard Toadflax (Comandra umbellata) - 3rd-most iNat observations in US for Santalales - 5 (Agate)
• FAMILY COULACEAE
• FAMILY ERYTHROPALACEAE
• FAMILY LORANTHACEAE
  • Showy Mistletoes
• FAMILY MISODENDRACEAE
  • Feathery Mistletoe (Misodendrum)
• FAMILY NANODEACEAE
• FAMILY OCTOKNEMACEAE
• FAMILY OLACACEAE
• FAMILY OPILIACEAE
• FAMILY SANTALACEAE
  • Western Dwarf-Mistletoe (Arceuthobium campylopodum) - 5th-most iNat observations in US for Santalales
  • Sandlewood
• FAMILY SCHOEPFIACEAE
• FAMILY STROMBOSIACEAE
• FAMILY THESIACEAE
• FAMILY VISCACEAE
  • American Mistletoe (Phoradendron leucarpum) - most iNat observations in US for Santalales
• FAMILY XIMENIACEAE

As of 2023, 496 species of Saxifragales have been observed in iNaturalist in the US and 1,925 throughout the world.

• FAMILY ALTINGIACEAE
  • Sweetgum (Liquidambar styraciflua) - most iNat observations in US for Saxifragales - 6 (Dry Streambed Garden at MOBOT), 2 (Great Smoky Mountains NP), 10
• FAMILY APHANOPETALACEAE
• FAMILY CERCIDIPHYLLACEAE
  • Katsura Tree (Cercidiphyllum japonicum)
• FAMILY CRASSULACEAE
  • Ice Plant (Hylotelephium sp.) - 6 (Heckman Rock Garden at MOBOT) - NOAH
  • Rose Crown (Rhodiola rhodantha) - 6 (Alpine VC at RMNP)
  • Stonecrops (Sedum spp.) - 6 (Kemper Garden at MOBOT)
    • Yellow Stonecrop (Sedum lanceolatum) - 6 (Alpine VC at RMNP)
    • Sierra Stonecrop (Sedum obtusatum) - 7 (Lower Cathedral Lake at Yosemite)
• FAMILY CYNOMORIACEAE
  • Scarlet Synomorium (Cynomorium coccineum) - MOBOT?
• FAMILY DAPHNIPHYLLACEAE
• FAMILY GROSSULARIACEAE
  • Goosberries/Currants (Ribes) - Food
    • Wild Gooseberry (Ribes missouriense) - Perry Lake, Great Smoky Mountains NP, RMNP - NOAH
    • Wax Currant (Ribes cereum) - 6 (Moraine Park at RMNP)
• FAMILY HALORAGACEAE
  • Water-Milfoils (Myriophyllum) - 6 (Onondaga), 8
    • Eurasian Water-Milfoil (Myriophyllum spicatum) - Great Plains Nature Park, KS
• FAMILY HAMAMELIDACEAE
  • Witch-Hazel (Hamamelis virginiana) - 2nd-most iNat observations in US for Saxifragales - 2 (Great Smoky Mountains NP), 3, 10
  • Vernal Witch Hazel (Hamamelis vernalis) - 6 (MOBOT)
• FAMILY ITEACEAE
• FAMILY PAEONIACEAE
  • Peonies (Paeonia)
• FAMILY PENTHORACEAE
• FAMILY PERIDISCACEAE
• FAMILY PTEROSTEMONACEAE
• FAMILY SAXIFRAGACEAE
  • Alumroots (Heuchera sp.) - 7 (Rainbow Falls at Devil's Postpile NM)
  • Coral Bells (Heuchera sp.) - 6 (Woodland Garden at MOBOT) - NOAH
  • Saxifrages (Micranthes)
  • Whiplash Saxifrage (Saxifraga hirculus) - 6 (Alpine VC at RMNP)
• FAMILY TETRACARPAEACEAE

As of 2023, no species of Berberidopsidales have been observed in iNaturalist in the US and 4 throughout the world.

• FAMILY AEXTOXICACEAE
  • Olivillo (Aextoxicon punctatum) - Most common iNat observation in the world. Found mainly in Chile south of the Atacama Desert.
• FAMILY BERBERIDOPSIDACEAE

As of 2023, 5 species of Dilleniales have been observed in iNaturalist in the US and 297 throughout the world.

• FAMILY DILLENIACEAE
  • Simpoh Air (Dillenia suffruticosa) -

As of 2023, 5 species of Gunnerales have been observed in iNaturalist in the US and 38 throughout the world.

• FAMILY GUNNERACEAE
  • Gunnera spp. - 12 (Hawaii, native), 5 (introduced)
• FAMILY MYROTHAMNACEAE

As of 2023, 1,847 species of Caryophyllales have been observed in iNaturalist in the US and 8,443 throughout the world.

• FAMILY ACHATOCARPACEAE
• FAMILY AGDESTIDACEAE
• FAMILY AIZOACEAE
  • Iceplants
• FAMILY AMARANTHACEAE
  • Amaranth
  • Fourwing Saltbush (Atriplex canescens) - 4 (South Entrance at Petrified Forest)
• FAMILY ANCISTROCLADACEAE
• FAMILY ASTEROPEIACEAE
• FAMILY BARBEUIACEAE
• FAMILY CARYOPHYLLACEAE
  • Pinks (Dianthus) - 6 (Heckman Rock Garden at MOBOT) - NOAH
    • Deptford Pink (Dianthus armeria) - 6 (Konza)
  • Rose Campion (Lychnis sp.) - 6 (Heckman Rock Garden at MOBOT) - NOAH
  • Moss Campion (Silene acaulis) - 6 (Alpine VC at RMNP)
  • White Campion (Silene latifolia)
  • Common Chickweed (Stellaria media)
• FAMILY CHENOPODIACEAE
  • Saltlover (Halogeton glomeratus) - 7 East of Tonopah, NV in the Great Basin Desert)
• FAMILY CORBICHONIACEAE
• FAMILY DIONCOPHYLLACEAE
• FAMILY DROSERACEAE
  • Sundews (Drosera)
    • Spoonleaf Sundew (Drosera intermedia) - 3 (Ferd's Bog in the Adirondacks)
    • Round-Leaved Sundew (Drosera rotundifolia) - 3 (Ferd's Bog in the Adirondacks)
    • Threadleaf Sundew (Drosera filiformis) - 6 (Schoenberg Temperate House at MOBOT) - NOAH
    • Fork-Leaved Sundew (Drosera binata) - 6 (Schoenberg Temperate House at MOBOT) - NOAH
    • Sundew (Drosera sp.) - 6 (Schoenberg Temperate House at MOBOT) - NOAH
  • Venus Flytrap (Dionaea muscipula) - 2 (Green Swamp), 6 (Shoenberg Temperate House at MOBOT) - NOAH
• FAMILY DROSOPHYLLACEAE
• FAMILY FRANKENIACEAE
• FAMILY GISEKIACEAE
• FAMILY LIMEACEAE
• FAMILY LOPHIOCARPACEAE
• FAMILY MOLLUGINACEAE
  • Green Carpetweed (Mollugo verticillata)
• FAMILY NEPENTHACEAE
  • Hanging Pitcher Plant (Nepenthes sp.) - NOAH - Climatron at MOBOT
• FAMILY NYCTAGINACEAE
  • Four O'Clocks (Mirabilis)
  • Yellowstone Sand Verbena (Abronia ammophila) - Endemic to small area around Yellowstone Lake
  • Prairie Snowball (Abronia fragrans) - 5 (Agate)
• FAMILY PETIVERIACEAE
• FAMILY PHYSENACEAE
• FAMILY PHYTOLACCACEAE
  • Pokeweed (Phytolacca) - Perry Lake, KS
    • American Pokeweed (Phytolacca americana) - most observed Caryophyllales species in U.S. in iNaturalist
  • Rivina sp. - 6 (Climatron at MOBOT) - NOAH
• FAMILY PLUMBAGINACEAE
• FAMILY POLYGONACEAE
  • Buckwheats (Eriogonum) - 1 (Yellowstone, Wind River Range)
    • California Buckwheat (Eriogonum fasciculatum) - common iNaturalist observation for Caryophyllales in the US - Yosemite NP
    • Yellow Eriogonum (Eriogonum flavum) - 5 (Agate)
    • James' Buckwheat (Eriogonum jamesii) - Bandalier NM
    • Sulfur Buckwheat (Eriogonum umbellatum) - 6 (Moraine Park at RMNP)
  • Koenigia (Koenigia islandica) - 6 (Alpine VC at RMNP)
  • American Jumposeed (Persicaria virginiana)
  • Knotweed (Polygonum sp.) - 6 (Heckman Rock Garden at MOBOT) - NOAH
  • Rhubarb (Rheum spp.) - Food
  • Curly Dock (Rumex crispus)
• FAMILY RHABDODENDRACEAE
• FAMILY SARCOBATACEAE
  • Greasewood (Sarcobatus vermiculatus) - 7 (Navy Beach at Mono Lake)
• FAMILY SIMMONDSIACEAE
• FAMILY STEGNOSPERMATACEAE
• FAMILY TAMARICACEAE
• SUBORDER CACTINEAE
  • FAMILY ANACAMPSEROTACEAE
  • FAMILY BASELLACEAE
  • FAMILY CACTACEAE
    • Saguaro Cactus (Carnegiea gigantea) - Most-observed cactus in U.S. in iNaturalist - 9 (Saguaro, Organ Pipe), 6 (Desert Dome at Omaha Zoo)
    • Cholla Cacti (Cylindropuntia)
      • Teddybear Cholla (Cylindropuntia bigelovii) - 7 (Mojave County, AZ)
      • Silver Cholla (Cylindropuntia echinocarpa) - 7 (Mojave NP)
      • Tree Cholla (Cylindropuntia imbricata) - 4 (Comanche NG)
      • Branched Pencil Cholla (Cylindropuntia ramosissima) - 7 (Mojave NP)
    • Hedgehog Cacti (Echinocereus)
      • Engelmann's Hedgehog Cactus (Echinocereus engelmannii) - 7 (Mojave NP)
      • Kingcup Cactus (Echinocereus triglochidiatus) - Black Canyon of the Gunnison, CO
    • Tropical Cactus (Epiphyllum) - 6 (Climatron at MOBOT)
    • Barrel Cacti (Ferocactus)
      • Fishhook Barrel Cactus (Ferocactus wislizeni) - 6 (Desert Dome at Omaha Zoo)
    • Cottontop Cactus (Homalocephala polycephala) - 7 (Alabama Hills, on the edge of the Great Basin Desert)
    • Prickly Pears (Opuntia) - 7, 9 (Big Bend National Park)
      • Prickly Pear (Opuntia) - 7, 9 (Big Bend National Park) - NOAH
      • Purple Prickly Pear (Opuntia azurea) - 9 (Big Bend)
      • Beavertail Cactus (Opuntia basilaris) - 7 (Alabama Hills, on the edge of the Great Basin Desert)
      • Brittle Prickly Pear (Opuntia fragilis) - Black Canyon of the Gunnison, CO
  • FAMILY DIDIEREACEAE
  • FAMILY HALOPHYTACEAE
  • FAMILY MONTIACEAE
    • Virginia Spring Beauty (Claytonia virginica) - Second-most-observed Caryophyllales in the US
    • Big-Rooted Spring Be (Claytonia megarhiza) - 6 (Alpine VC at RMNP)
  • FAMILY PORTULACACEAE
    • Purslanes (Portulaca) - Yosemite NP
  • FAMILY TALINACEAE