Gentians, Dogbanes, Madders, and Allies

Gentianales · 50 species · 3 families

In Québec, the order Gentianales brings together 50 species of plants, in 3 families. The stars? Common milkweed, Spreading dogbane and Partridgeberry, the most often observed. The richest region: Estrie, with 34 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.

Species observed by region

Where do the observations come from?

  • Mostly iNaturalist : photos taken by people all over Québec, with the species confirmed by the community.
  • Other public sources : such as eBird for birds and the provincial forest inventories, gathered by GBIF, the global biodiversity data network.
  • What we keep : confirmed observations, with an exact position (not blurred to protect a rare species), that their author allows to be reused.
  • One place counts once : several observations of the same species at the same spot (within 11 m) count as one.
  • So our numbers are lower : than iNaturalist’s total. A region without observations does not mean the species does not live there.

Data downloaded in September 2026.

  1. Estrie34
  2. Montérégie33
  3. Montréal28
  4. Capitale-Nationale27
  5. Outaouais27
  6. Laurentides26
  7. Chaudière-Appalaches23
  8. Centre-du-Québec22
  9. Saguenay–Lac-Saint-Jean21
  10. Bas-Saint-Laurent19
  11. Côte-Nord19
  12. Lanaudière19
  13. Gaspésie–Îles-de-la-Madeleine18
  14. Mauricie17
  15. Abitibi-Témiscamingue17
  16. Laval17
  17. Nord-du-Québec15
Common milkweed6,574 observations
Spreading dogbane2,811 observations
Partridgeberry2,778 observations
Fragrant bedstraw1,868 observations
Narrowleaf gentian787 observations
Common periwinkle690 observations
Swamp milkweed672 observations
Hemp dogbane613 observations
Buttonbush589 observations
Common marsh bedstraw571 observations
False baby's breath502 observations
Rough bedstraw308 observations
Azure bluet290 observations
Pale swallow-wort216 observations
Small bedstraw179 observations
American spurred gentian177 observations
Northern bog bedstraw168 observations
Stiff marsh bedstraw117 observations
Closed bottle gentian115 observations
Butterfly milkweed97 observations
Marsh felwort81 observations
Black swallow-wort74 observations
Lanceleaf wild licorice67 observations
Autumn dwarf-gentian56 observations
Branched centaury51 observations
Yellow Spring bedstraw47 observations
Sweetscented bedstraw37 observations
Northern bedstraw36 observations
Licorice bedstraw35 observations
Cleavers33 observations
Victorin's fringedgentian28 observations
Yellow screwstem25 observations
Bottle gentian19 observations
Fringed gentian17 observations
White bedstraw16 observations
Bluntleaf bedstraw15 observations
Danes' dwarf gentian14 observations
Boreal bedstraw13 observations
Snow gentian12 observations
Fourpart dwarf gentian6 observations
Field madder3 observations
Longleaf bluet3 observations
Western fringe gentian3 observations
Greater periwinkle2 observations
Marin County bedstraw1 observations
European centaury1 observations
lesser fringed gentian1 observations
Poke milkweed1 observations