There are at least 28 members of the dogbane, gentian and milkweed order, Gentianales, found in Montana. Some of these species are exotics (not native to Montana)Exotic species have been deliberately or accidentally introduced to areas outside of their native geographic range and are able to reproduce and maintain sustainable populations in these areas. These exotic populations may also be referred to as alien, introduced, invasive, non-native, or non-indigenous. and some species have been designated as Species of Concern.Species of Concern are native taxa that are at-risk due to declining population trends, threats to their habitats, restricted distribution, and/or other factors. Designation as a Montana Species of Concern or Species of Concern is based on the Montana Status Rank, and is not a statutory or regulatory classification. Rather, these designations provide information that helps resource managers make proactive decisions regarding species conservation and data collection priorities.

Dogbanes Family: Apocynaceae Apocynum androsaemifolium, spreading dogbane Apocynum cannabinum, clasping-leaf dogbane

Gentians

Family: Gentianaceae Eustoma grandiflorum, showy prairie-gentian Frasera albicaulis, white-stem frasera Frasera speciosa, green gentian Gentiana affinis, prairie gentian Gentiana algida, whitish gentian Gentiana calycosa, explorer's gentian Gentiana fremontii, moss gentian Gentiana glauca, glaucous gentian Gentiana prostrata, pygmy gentian Gentianella amarella, northern gentian Gentianella propinqua, four-parted gentian Gentianella tenella, slender gentian Gentianopsis macounii, Macoun's gentian Gentianopsis simplex, hiker's gentian Gentianopsis thermalis, Rocky Mountain fringed gentian Halenia deflexa, spurred gentian Lomatogonium rotatum, marsh felwort Swertia perennis, felwort Zeltnera exaltata, western centaury

Milkweeds

Family: Asclepiadaceae Asclepias incarnata, swamp milkweed Asclepias ovalifolia, ovalleaf milkweed Asclepias pumila, low milkweed Asclepias speciosa, showy milkweed Asclepias stenophylla, narrowleaf milkweed Asclepias verticillata, whorled milkweed Asclepias viridiflora, green milkweed

Further reading

See also List of dicotyledons of Montana

Notes