Dipsacaceae

• Dipsacus fullonum L., Common teasel, Fuller's teasel, Synonym: Dipsacus sylvestris Huds., Introduced, Larimer Co., Photos Phytoimages, USDA_Plants

• Knautia arvensis (L.) Coult., Bluebuttons, Field scabiosa, Introduced, Uncommon, Photos Phytoimages, USDA_Plants

Elaeagnaceae

• Elaeagnus angustifolia L., Russian olive, Introduced, Larimer Co., Photos Phytoimages, USDA_Plants

• Elaeagnus commutata Bernh. ex Rydb., Silverberry, Introduced, Larimer Co., Photos Phytoimages, USDA_Plants

• Shepherdia argentea (Pursh) Nutt., Silver buffaloberry, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Shepherdia canadensis (L.) Nutt., Canadian buffaloberry, Bitter buffaloberry, Native, Common, Photos Phytoimages, USDA_Plants

Elatinaceae

• Bergia texana (Hook.) Seub. ex Walp., Texas bergia, Native, Boulder Co., Photos Phytoimages, USDA_Plants

• Elatine brachysperma A. Gray, shortseed waterwort, Native, Weld Co., Photos Phytoimages, USDA_Plants

• Elatine rubella Rydb., Southwestern waterwort, Synonym: Elatine triandra Schkuhr., Native, Weld & Grand Cos., Photos Phytoimages, USDA_Plants

Ericaceae

• Arctostaphylos patula Greene, Greenleaf manzanita, Synonym: pinetorum Rollins, Native, Jackson Co., Photos Phytoimages, USDA_Plants

• Arctostaphylos uva-ursi (L.) Spreng., Bearberry, Bearberry manzanita, Kinnikinnick, Mealberry, Native, Abundance - Unknown, Photos Phytoimages, USDA_Plants

• Arctostaphylos X coloradensis Rollins, Hybrid bearberry, Hybrid between A. patula and A. uva-ursi, Native, Abundance - Unknown, Photos Phytoimages, USDA_Plants

• Chimaphila umbellata (L.) W.P.C. Barton, Pipsissewa, Native, Uncommon, Photos Phytoimages, USDA_Plants

• Gaultheria humifusa (Graham) Rydb., Alpine spicy-wintergreen, Creeping Wintergreen, Native, Common, Photos Phytoimages, USDA_Plants

• Kalmia microphylla (Hook.) A. Heller, Alpine laurel, Swamp laurel, Native, Common, Photos Phytoimages, USDA_Plants

• Moneses uniflora A.Gray, Wood nymph, Star-flowered pyrola, Synonym: Pyrola uniflora L., Native, Common, Photos Phytoimages, USDA_Plants

• Monotropa hypopithys L., Pinesap, Synonym: Hypopithys monotropa Crantz, Native, Uncommon, Photos Phytoimages, USDA_Plants

• Orthilia secunda (L.) House, One-sided Pyrola, Synonym: Pyrola secunda L., Native, Common, Photos Phytoimages, USDA_Plants

• Pterospora andromedea Nutt., Pinedrops, Native, Common, Photos Phytoimages, USDA_Plants

• Pyrola asarifolia Michx., Pink wintergreen, Swamp pyrola, Native, Common, Photos Phytoimages, USDA_Plants

• Pyrola chlorantha Sw., Green-flowered wintergreen, Green-flowered Pyrola, Native, Common, Photos Phytoimages, USDA_Plants

• Pyrola minor L., Lesser wintergreen, Least pyrola, Native, Common, Photos Phytoimages, USDA_Plants

• Pyrola picta Sm., White-veined wintergreen, Pictureleaf wintergreen, Native, Boulder & Jackson Cos., Photos Phytoimages, USDA_Plants

• Rhododendron albiflorum Hook., White azalea, Cascade azalea, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Vaccinium cespitosum Michx., Dwarf blueberry, Native, Common, Photos Phytoimages, USDA_Plants

• Vaccinium myrtillus L., Whortleberry, Huckleberry, Including Vaccinium myrtillus L. ssp. oreophilum (Rydb.) Á. Löve & D. Löve & Kapoor, Native, Common, Photos Phytoimages, USDA_Plants

• Vaccinium scoparium Leiberg ex Coville, Dwarf red whortleberry, Broom huckleberry, grouse whortleberry, Native, Common, Photos Phytoimages, USDA_Plants

Euphorbiaceae

• Euphorbia fendleri Torr. & A. Gray, Fendler's sandmat, Synonym: Chamaesyce fendleri (Torr. & A. Gray) Small, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia geyeri Engelm. & A. Gray, Geyer's sandmat, Synonym: Chamaesyce geyeri (Engelm. & A. Gray) Small, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia glyptosperma Engelm., Ribseed sandmat, Synonym: Chamaesyce glyptosperma (Engelm.) Small, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia maculata L., Spotted sandmat, Synonym: Chamaesyce maculata (L.) Small, Introduced, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia missurica Raf., Prairie sandmat, Synonym: Chamaesyce missurica (Raf.) Shinners, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia serpyllifolia Pers., Thymeleaf sandmat, Synonym: Chamaesyce serpyllifolia ssp. serpyllifolia (Pers.) Small, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia stictospora Engelm., Slimseed sandmat, Synonym: Chamaesyce stictospora (Engelm.) Small, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia brachycera Engelm., Horned spurge, Synonym: Tithymalus robustus (Engelm.) Small, Native, Abundance - Unknown, Photos Phytoimages, USDA_Plants

• Euphorbia cyparissias L., Cypress spurge, Synonym: Tithymalus cyparissias (L.) Hill, Introduced, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia virgata Waldst. & Kit., Leafy spurge, Russian leafy spurge, wolf's milk, This taxon has been called E. esula but see Flora North America (vol. 12, p. 312) for explanation of why that name was misapplied, Introduced, Uncommon, Photos Phytoimages, USDA_Plants

• Euphorbia dentata Michx., Toothed spurge, Synonym: Poinsettia dentata (Michx.) Klotzsch & Garcke, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia marginata Pursh, Snow on the mountain, Synonym: Agaloma marginata (Pursh) Á. Löve & D. Löve, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia myrsinites L., Myrtle spurge, Synonym: Tithymalus myrsinites (L.) Hill, Introduced, Larimer Co., Photos Phytoimages, USDA_Plants

• Euphorbia spathulata Lam., Warty spurge, Synonym: Tithymalus spathulatus (Lam.) W.A. Weber, Native, Larimer Co., Photos Phytoimages, USDA_Plants

• Tragia ramosa Torr., Noseburn, Branched noseburn, Native, Larimer Co., Photos Phytoimages, USDA_Plants