Plantae → Filicopsida → Marsileaceae
American Pillwort
Pilularia americana
Alex Heyman · CC-0
ORBIC List 2S2
State Rank
SX
S1
S2
S3
S4
S5
S2 — Imperiled in Oregon
G4?
Global Rank
Apparently Secure
List 2
ORBIC
Threatened in Oregon
What do these ranks mean? ORBIC's ranking definitions or NatureServe's conservation status categories
Ecoregions
Blue Mountains
N. Basin & Range
East Cascades
Klamath Mountains
Counties
Crook · Deschutes · Jackson · Klamath · Lake
Other states / provinces
CA+
Range map
Certain
Possible
Extirpated
Absent