---
title: "Plain Pocketbook"
description: "Lampsilis cardium — Other animals. Lampsilis cardium is a species of freshwater mussel in the family Unionidae, the river mussels."
canonical: https://animalchecklist.com/animal/plain-pocketbook
last_updated: 2026-09-20
---

# Plain Pocketbook

> Lampsilis cardium — Other animals. Lampsilis cardium is a species of freshwater mussel in the family Unionidae, the river mussels.

- Scientific name: *Lampsilis cardium*
- Category: `other` (Other animals)
- Habitats: `freshwater` (Lakes & rivers)
- iNaturalist observations: 5034
- Wikidata: [Q3013322](https://www.wikidata.org/wiki/Q3013322)
- iNaturalist taxon: [104027](https://www.inaturalist.org/taxa/104027)

## Names

- en: Plain Pocketbook
- fr: Mulette cordiforme

## Countries with the most observations

US (3858), CA (852)

## Summary

Lampsilis cardium is a species of freshwater mussel in the family Unionidae, the river mussels. It is known commonly as the plain pocketbook. It is widespread in eastern North America, where it is native to the Mississippi River and Great Lakes drainage systems.

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Lampsilis_cardium

## Photo

![Plain Pocketbook](https://animalchecklist.com/img/animals/plain-pocketbook/medium.jpg)

Photo: Charlie (she/they) · CC0 · inaturalist — https://www.inaturalist.org/observations/232402271

## Machine access

`GET https://animalchecklist.com/api/v1/animals/plain-pocketbook?lang=en` — see [openapi.json](https://animalchecklist.com/openapi.json).