North America Non-native Plant

Digitalis Mariana Heywoodii

Botanical name: Digitalis mariana heywoodii

USDA symbol: DIMAH

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

Synonyms: Digitalis purpurea L. ssp. heywoodii P. Silva & M. Silva (DIPUH)   

The Mystery of Digitalis mariana heywoodii: A Plant That Might Not Exist If you’ve stumbled across the name Digitalis mariana heywoodii in your plant research, you’re not alone in wondering what exactly this mysterious plant might be. Here’s the thing though – this particular botanical name appears to be something ...

The Mystery of Digitalis mariana heywoodii: A Plant That Might Not Exist

If you’ve stumbled across the name Digitalis mariana heywoodii in your plant research, you’re not alone in wondering what exactly this mysterious plant might be. Here’s the thing though – this particular botanical name appears to be something of a botanical ghost story.

What We Know (And Don’t Know)

Digitalis mariana heywoodii is listed in some databases with the synonym Digitalis purpurea L. ssp. heywoodii P. Silva & M. Silva, suggesting it might be a subspecies of the common foxglove. However, extensive searches through botanical literature and plant databases reveal virtually no reliable information about this specific plant.

This lack of information could mean several things:

  • It might be an extremely rare or localized variety
  • The taxonomic classification could be outdated or incorrect
  • It may have been reclassified under a different name
  • The name might be a database error

The Geographic Mystery

Without verified botanical sources, we cannot determine where this plant naturally occurs or if it exists as a distinct taxon at all.

Should You Try to Grow It?

Here’s our honest recommendation: don’t spend time searching for seeds or plants labeled as Digitalis mariana heywoodii. With no reliable growing information, habitat requirements, or even confirmation of its existence as a distinct species, you’d likely be chasing botanical shadows.

Better Alternatives for Your Garden

Instead of pursuing this mystery plant, consider these well-documented native alternatives that offer similar appeal:

  • Native foxgloves specific to your region
  • Penstemon species – often called beardtongue, these natives offer tubular flowers loved by pollinators
  • Chelone species – turtlehead plants provide similar flower shapes and are excellent for wildlife

The Takeaway

Sometimes in the plant world, names exist in databases without corresponding real plants you can actually grow. Digitalis mariana heywoodii appears to be one of those enigmatic entries. Rather than getting caught up in botanical mysteries, focus your gardening energy on well-documented native species that will thrive in your specific location and provide proven benefits to local wildlife.

If you’re specifically interested in foxglove-type plants, consult with local native plant societies or extension offices to find appropriate species for your area. They’ll point you toward plants that actually exist – and more importantly, ones you can successfully grow!

Digitalis Mariana Heywoodii

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Digitalis L. - foxglove

Species

Digitalis mariana Boiss.

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