Animalia → Gastropoda → Physidae

Grain Physa

Physella hordacea

Invertebrate Animals

ORBIC List 1S1

State Rank

SX
S1
S2
S3
S4
S5

S1 — Critically Imperiled in Oregon

What do these ranks mean? ORBIC's ranking definitions or NatureServe's conservation status categories

Ecoregions

N. Basin & Range
Coast Range
West Cascades
Willamette Valley

Counties

Coos · Lake · Lane · Multnomah

Other states / provinces

BC, WA

Range map

Certain
Possible
Extirpated
Absent