North America Non-native Plant

Calamagrostis Purpurea Phragmitoides

Botanical name: Calamagrostis purpurea phragmitoides

USDA symbol: CAPUP6

Habit: grass

Native status: Not native but doesn't reproduce and persist in the wild

The Mystery of Calamagrostis purpurea phragmitoides: When Plant Names Don’t Add Up Sometimes in the world of native gardening, we encounter plant names that seem legitimate but turn out to be botanical mysteries. Calamagrostis purpurea phragmitoides is one such case – a name that appears scientific and proper, but doesn’t ...

The Mystery of Calamagrostis purpurea phragmitoides: When Plant Names Don’t Add Up

Sometimes in the world of native gardening, we encounter plant names that seem legitimate but turn out to be botanical mysteries. Calamagrostis purpurea phragmitoides is one such case – a name that appears scientific and proper, but doesn’t actually correspond to any recognized plant species.

What We Know About This Name

The genus Calamagrostis is real and well-documented. These plants are commonly known as reedgrasses, and they’re a group of perennial grasses found throughout temperate regions of the world. Many species in this genus are excellent native plants for gardens and natural landscapes.

However, Calamagrostis purpurea phragmitoides doesn’t appear in any major botanical databases or taxonomic references. This could happen for several reasons:

  • It might be a misidentified or misspelled plant name
  • It could be an outdated name that’s no longer accepted
  • It may have been incorrectly constructed by combining different botanical terms

The Real Calamagrostis Species Worth Growing

If you’re interested in growing native reedgrasses, there are several legitimate Calamagrostis species that make wonderful garden plants:

  • Calamagrostis canadensis (Canada Reedgrass) – A moisture-loving native grass
  • Calamagrostis stricta (Northern Reedgrass) – Great for wetland gardens
  • Calamagrostis purpurascens (Purple Reedgrass) – A beautiful ornamental native

How to Verify Plant Names

When you encounter unfamiliar plant names, especially for native gardening projects, it’s always wise to verify them through reliable sources:

  • Check the USDA PLANTS Database
  • Consult your local native plant society
  • Verify with extension office publications
  • Cross-reference multiple botanical databases

Moving Forward with Confidence

While Calamagrostis purpurea phragmitoides remains a mystery, don’t let this discourage your native gardening journey! The Calamagrostis genus offers many legitimate, beautiful, and ecologically valuable species that can enhance your landscape while supporting local wildlife.

If you came across this plant name in a specific context – perhaps a plant list, nursery catalog, or gardening resource – consider reaching out to the source for clarification. They may have additional information about what plant was actually intended, or they might need to correct an error in their materials.

Remember, successful native gardening is built on accurate plant identification and reliable information. When in doubt, stick with well-documented native species that are proven performers in gardens like yours!

Calamagrostis Purpurea Phragmitoides

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Calamagrostis Adans. - reedgrass

Species

Calamagrostis purpurea (Trin.) Trin.

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