# List of dicotyledons of Montana

There are at least 2109 species of dicotyledons found in Montana according to the Montana Field Guide. This is a list of Dicotyledoneae orders found in Montana. The Montana Natural Heritage Program has identified a number of dicot species as "Species of Concern". Some of these species are exotics (not native to Montana).
* List of Asterales of Montana (Order Asterales)
* List of Ranunculales of Montana (Order Ranunculales)
* List of Rubiales of Montana (Order Rubiales)
* List of Campanulales of Montana (Order Campanulales)
* List of Fagales of Montana (Order Fagales)
* List of Lamiales of Montana (Order Lamiales)
* List of Rhamnales of Montana (Order Rhamnales)
* List of Polygonales of Montana (Order Polygonales)
* List of Capparales of Montana (Order Capparales)
* List of Caryophyllales of Montana (Order Caryophyllales)
* Celastrales (Order Celastrales)
** Celastrus scandens, bittersweet
** Paxistima myrsinites, mountain-lover or Oregon boxleaf
* List of Dipsacales of Montana (Order Dipsacales)
* List of Gentianales of Montana (Order Gentianales)
* Dogwood (Order Cornales)
** Cornus canadensis, Bunchberry dogwood
** Cornus sericea, Red-osier dogwood
* List of Santalales of Montana (Order Santalales)
* List of Myrtales of Montana (Order Myrtales)
* Flax (Order Linales)
** Linum australe, southern flax
** Linum lewisii, prairie flax
** Linum rigidum, stiff-stem flax
** Linum rigidum var. compactum, Wyoming flax
** Linum rigidum var. rigidum, stiff-stem flax
** Linum usitatissimum, common flax
* List of Papaverales of Montana (Order Papaverales)
* List of Geraniales of Montana (Order Geraniales)
* Ginger (Order Aristolochiales)
** Asarum caudatum, wild ginger
* List of Apiales of Montana (Order Apiales)
* List of Ericales of Montana (Order Ericales)
* List of Malvales of Montana (Order Malvales)
* List of Sapindales of Montana (Order Sapindales)
* Milkworts (Order Polygalales)
** Polygala alba, white milkwort
** Polygala verticillata, whorled milkwort
* Oleasters (Order Proteales)
** Elaeagnus angustifolia, Russian olive
** Elaeagnus commutata, American silverberry
** Shepherdia argentea, silver buffaloberry
** Shepherdia canadensis, Canada buffaloberry
* List of Fabales of Montana (Order Fabales)
* Peony (Order Dilleniales)
** Paeonia brownii, western peony
* List of Plantaginales of Montana (Order Plantaginales)
* List of Primulales of Montana (Order Primulales)
* List of Rosales of Montana (Order Rosales)
* List of Scrophulariales of Montana (Order Scrophulariales)
* List of Solanales of Montana (Order Solanales)
* List of Euphorbiales of Montana (Order Euphorbiales)
* List of Theales of Montana (Order Theales)
* Sundews (Order Nepenthales)
** Drosera anglica, English sundew
** Drosera linearis, linear-leaved sundew
** Drosera rotundifolia, roundleaf sundew
* List of Urticales of Montana (Order Urticales)
* List of Violales of Montana (Order Violales)
* Water milfoil (Order Haloragales)
** Myriophyllum quitense, Andean water-milfoil
** Myriophyllum sibiricum, common water-milfoil
** Myriophyllum spicatum, Eurasian water-milfoil
** Myriophyllum verticillatum, whorled water-milfoil
* List of Nymphaeales of Montana (Order Nymphaeales)
* Water-starworts and mare's-tails (Order Callitrichales)
** Mare's tails, Family: Hippuridaceae
*** Hippuris vulgaris, common mare's-tail
** Water-starworts, Family: Callitrichaceae
*** Callitriche hermaphroditica, autumnal water-starwort
*** Callitriche heterophylla, large water-starwort
*** Callitriche palustris, vernal water starwort
*** Callitriche stagnalis, pond water-starwort
* List of Salicales of Montana (Order Salicales)