North America Non-native Plant

Smallbristle Hound’s Tongue

Botanical name: Cynoglossum microglochin

USDA symbol: CYMI3

Life cycle: biennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Smallbristle Hound’s Tongue: A Mysterious Plant with Limited Information If you’ve stumbled upon the name smallbristle hound’s tongue or its scientific name Cynoglossum microglochin in your plant research, you’re probably wondering what exactly this mysterious plant is all about. Well, you’re not alone in your curiosity – this particular species ...

Smallbristle Hound’s Tongue: A Mysterious Plant with Limited Information

If you’ve stumbled upon the name smallbristle hound’s tongue or its scientific name Cynoglossum microglochin in your plant research, you’re probably wondering what exactly this mysterious plant is all about. Well, you’re not alone in your curiosity – this particular species is something of an enigma in the botanical world.

What We Know About Smallbristle Hound’s Tongue

Cynoglossum microglochin, commonly known as smallbristle hound’s tongue, belongs to the broader hound’s tongue family. Based on available data, this plant is classified as a forb – essentially a non-woody flowering plant that lacks the thick, woody stems you’d find on shrubs or trees. It’s described as either biennial or perennial, meaning it either completes its life cycle over two years or returns year after year.

Where Does It Grow?

According to plant distribution records, smallbristle hound’s tongue has been documented in Massachusetts. However, it’s important to note that this species is considered non-native to North America, meaning it was introduced from elsewhere and has established itself in the wild.

The Information Gap

Here’s where things get tricky: there’s remarkably little detailed information available about Cynoglossum microglochin specifically. Unlike many other plants you might research for your garden, this species seems to fly under the radar in most horticultural and botanical literature. We don’t have clear details about:

  • Its appearance and aesthetic qualities
  • Preferred growing conditions
  • Hardiness zones
  • Benefits to pollinators or wildlife
  • Whether it poses any invasive threats

Should You Plant It?

Given the lack of available information and the plant’s non-native status, it’s difficult to make a strong recommendation either way about adding smallbristle hound’s tongue to your garden. Without knowing its growth habits, invasive potential, or care requirements, it’s a bit like buying a mystery seed packet – you’re not quite sure what you’re getting into.

Better Alternatives: Native Options to Consider

If you’re drawn to the idea of growing plants from the hound’s tongue family, or if you’re simply looking for interesting native forbs for your garden, consider these well-documented alternatives:

  • Wild bergamot (Monarda species) – attracts pollinators and has aromatic foliage
  • Purple coneflower (Echinacea purpurea) – beloved by butterflies and goldfinches
  • Wild ginger (Asarum canadense) – perfect for shady woodland gardens
  • Coral bells (Heuchera americana) – native with attractive foliage and delicate flowers

The Bottom Line

Smallbristle hound’s tongue remains something of a botanical mystery. If you do encounter this plant or seeds claiming to be this species, proceed with caution and consider consulting with local botanists or extension agents who might have more region-specific knowledge. In the meantime, there are plenty of well-documented native plants that can provide beauty, ecological benefits, and gardening success without the guesswork.

Sometimes in gardening, as in life, the most rewarding path is choosing plants we understand well – leaving the mysteries for the botanists to solve!

Smallbristle Hound’s Tongue

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

Lamiales

Family

Boraginaceae Juss. - Borage family

Genus

Cynoglossum L. - hound's tongue

Species

Cynoglossum microglochin Benth. - smallbristle hound's tongue

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