Kebnat

Najas

5 species

In Québec, the genus Najas (family Hydrocharitaceae) counts 5 species of plants. The stars? Slender naiad, Southern naiad and Cryptic naiad, the most often observed. The richest region: Estrie, with 4 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. Estrie4
  2. Outaouais4
  3. Centre-du-Québec4
  4. Laurentides3
  5. Montérégie3
  6. Capitale-Nationale2
  7. Montréal2
  8. Chaudière-Appalaches2
  9. Lanaudière2
  10. Bas-Saint-Laurent1
  11. Mauricie1
  12. Abitibi-Témiscamingue1
  13. Laval1

Najas 5

Alismatales
All2,855Poales529Asterales316Lamiales214Rosales205Caryophyllales204Malpighiales120Asparagales119Brassicales109Ranunculales98Ericales95Fabales91Alismatales74Saxifragales68Polypodiales60Apiales51Dipsacales50Gentianales50Solanales43Fagales38Boraginales33Malvales29Myrtales29Sapindales27Pinales26Liliales22Ophioglossales20Lycopodiales18Geraniales17Cornales14Celastrales12Equisetales9Vitales7Commelinales6Cucurbitales6Nymphaeales5Oxalidales5Piperales5Osmundales4Aquifoliales3Santalales3Selaginellales3Acorales2Buxales2Ceratophyllales2Isoetales2Salviniales2Crossosomatales1Ginkgoales1Hymenophyllales1Laurales1Magnoliales1Marchantiales1Proteales1Schizaeales1
Hydrocharitaceae
All74Potamogetonaceae28Araceae19Hydrocharitaceae10Alismataceae8Tofieldiaceae3Juncaginaceae2Butomaceae1Ruppiaceae1Scheuchzeriaceae1Zosteraceae1
Slender naiad146 observations
Southern naiad26 observations
Cryptic naiad18 observations
Brittle waternymph9 observations
Slender waternymph6 observations