North America Native Plant

Quillwort

Botanical name: Isoetes ×echtuckeri

USDA symbol: ISEC3

Life cycle: perennial

Habit: grass

Native status: Native to Canada âš˜ Native to the lower 48 states  

Discovering Quillworts: The Ancient Water Plants in Your Local Wetlands Ever stumbled across what looks like underwater grass tufts while exploring a pond or marsh? You might have encountered one of nature’s most fascinating living fossils: the quillwort. These curious little plants have been quietly thriving in North America’s wetlands ...

Discovering Quillworts: The Ancient Water Plants in Your Local Wetlands

Ever stumbled across what looks like underwater grass tufts while exploring a pond or marsh? You might have encountered one of nature’s most fascinating living fossils: the quillwort. These curious little plants have been quietly thriving in North America’s wetlands for millions of years, and one particular species, Isoetes ×echtuckeri, calls the northeastern regions home.

What Exactly Is a Quillwort?

Don’t let the name fool you – quillworts aren’t actually related to grasses at all! They’re part of an ancient plant group that’s more closely related to ferns than anything else. Think of them as botanical time travelers that have survived since the age of dinosaurs. The × in Isoetes ×echtuckeri tells us something special: this is a hybrid species, born from the crossing of two parent quillwort species.

These perennial plants look like small tufts of dark green, quill-like leaves emerging from a central base – imagine a tiny underwater porcupine made of grass. Each leaf is hollow and helps the plant float and exchange gases underwater, making them perfectly adapted for their aquatic lifestyle.

Where to Find This Wetland Wonder

Isoetes ×echtuckeri is native to both Canada and the northeastern United States, making its home in the cool, clean waters of the region. You can find this quillwort in New Brunswick, Nova Scotia, Ontario, Quebec, and Maine – basically anywhere the lakes are clear and the summers aren’t too scorching hot.

As an obligate wetland plant, this quillwort almost always lives in wetlands, meaning you’ll never find it in your average backyard garden. It’s completely dependent on aquatic or semi-aquatic conditions to survive.

How to Identify Quillworts in the Wild

Spotting quillworts takes a keen eye, but here’s what to look for:

  • Small tufts of dark green, needle-like leaves growing from a central point
  • Leaves that are hollow and somewhat translucent when held up to light
  • Plants growing completely or partially submerged in shallow water
  • A bulb-like base anchored in muddy or sandy lake bottoms
  • No flowers – these plants reproduce with spores, not seeds

Are Quillworts Beneficial for Gardens and Ecosystems?

While you won’t be planting quillworts in your typical flower bed, they play important ecological roles in their wetland homes. These little plants help stabilize lake and pond bottoms with their root systems and provide habitat for small aquatic creatures. They’re also indicators of clean, healthy water – if you see quillworts thriving, it’s usually a good sign that the ecosystem is in balance.

For the adventurous water gardener with a natural pond or bog garden, quillworts can be fascinating additions, though they require very specific conditions to thrive. They need consistently cool, clean water and don’t tolerate pollution or major water level fluctuations well.

The Bottom Line on Quillworts

Isoetes ×echtuckeri represents one of nature’s most successful survival stories – a plant group that has weathered massive extinctions and climate changes while maintaining its unique underwater lifestyle. While they’re not practical for most home gardens, discovering these living fossils in their natural habitat is like finding a direct connection to Earth’s ancient past.

Next time you’re exploring a clear northern lake or pond, take a moment to peer into the shallows. Those unassuming grass-like tufts might just be quillworts – some of the most remarkable and resilient plants on our continent, quietly going about their business as they have for millions of years.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Northcentral & Northeast

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Quillwort

Classification

Group

Quillwort

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Lycopodiophyta - Lycopods

Subdivision
Class

Lycopodiopsida

Subclass
Order

Isoetales

Family

Isoetaceae Dumort. - Quillwort family

Genus

Isoetes L. - quillwort

Species

Isoetes ×echtuckeri D.F. Brunton & D.M. Britton [tenella × tuckermannii] - quillwort

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA