Cactaceae

• Coryphantha missouriensis (Sweet) Britton & Rose, Missouri Foxtail cactus, Synonym: Escobaria missouriensis (Sweet) D.R. Hunt, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Coryphantha vivipara (Nutt.) Britton & Rose, Pincushion cactus, Synonym: Escobaria vivapara (Nutt.) Buxbaum, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Echinocereus viridiflorus Englem., Nylon hedgehog cactus, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Opuntia fragilis (Nutt.) Haw., Brittle pricklypear, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Opuntia polyacantha Haw., Plains pricklypear, Native, Common, Photos Phytoimages, USDA_Plants

• Opuntia polyacantha Haw. var. hystricina (Engelm. & J. M. Bigelow) B.D. Parfitt, Porcupine pricklypear, Synonyms: Opuntia erinacea Engelm. & J. M. Bigelow var. hystricina (Engelm. & J. M. Bigelow) L. D. Benson, Opuntia polyacantha var. rufispina (Engelm. & J. M. Bigelow ex Engelm) L.D. Benson, Opuntia rhodantha K. Schum., Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Opuntia polyacantha Haw. var. trichophora (Engelm. & J. M. Bigelow) J.M. Coult., Grizzly bear cactus, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Opuntia polyacantha Haw. var. polyacantha, Starvation pricklypear, Synonyms: Opuntia haecockiae G. Arp, Opuntia polyacantha var. juniperina (Britton & Rose) L.D. Benson, Opuntia rutila Nutt., Opuntia schweriniana K. Schum, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Pediocactus simpsonii (Engelm.) Britton & Rose, Mountain cactus, Mountain ball cactus, Synonyms: Pediocactus simpsonii var. minor (Engelm.) Cockerell. Not listed for Larimer county in Ackerfield (2015), Native, Common, Photos Phytoimages, USDA_Plants

Campanulaceae

• Campanula parryi A.Gray, Rocky Mountain bellflower, Parry's harebell, Native, Common, Photos Phytoimages, USDA_Plants

• Campanula rapunculoides L., Rove bellflower, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Campanula rotundifolia L., Harebell, Bluebells of Scotland, Synonyms: Campanula gieseckiana Vest ex Schult, Campanula groenlandica Berlin, Native, Common, Photos Phytoimages, USDA_Plants

• Campanula uniflora L., Arctice bellflower, Alpine harebell, Native, Common, Photos Phytoimages, USDA_Plants

• Lobelia siphilitica L. var. ludoviciana A. DC., Great blue lobelia, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Triodanis leptocarpa Nieuwl., Slimpod Venus' looking-glass, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Triodanis perfoliata (L.) Nieuwl., Venus' looking-glass, Native, Common, Photos Phytoimages, USDA_Plants

Cannabaceae

• Cannabis sativa L. ssp. sativa, Marijuana, Introduced, Abundance - Unknown, Photos Phytoimages, USDA_Plants

• Celtis reticulata Torr., Netleaf hackberry, Synonyms: Celtis laevigata Willd. var. reticulata (Torr.) L.D. Benson, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Humulus neomexicanus Rydb., New Mexican hop, Synonym: Humulus lupulus var. neomexicanus A.Nelson & Cockerell, Native, Common, Photos Phytoimages, USDA_Plants

Caprifoliaceae

• Linnaea borealis L. var. longiflora Torr., Twinflower, Native, Common, Photos Phytoimages, USDA_Plants

• Lonicera involucrata (Richardson) Banks ex Spreng., Black twinberry, twinberry honeysuckle, Bush honeysuckle, Native, Common, Photos Phytoimages, USDA_Plants

• Lonicera tatarica L., Tatarian honeysuckle, Introduced, Larimer Co., Photos Phytoimages, USDA_Plants

• Symphoricarpos albus (L.) S.F. Blake, White snowberry, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Symphoricarpos occidentalis Hook., Wolfberry, Snowberry, Native, Common, Photos Phytoimages, USDA_Plants

• Symphoricarpos rotundifolius A. Gray, Mountain snowberry, Synonyms: Symphoricarpos oreophilus A. Gray, Symphoriocarpos palmeri G. N. Jones, Native, Common, Photos Phytoimages, USDA_Plants