North America Non-native Plant

Claspleaf Twistedstalk

Botanical name: Streptopus amplexifolius var. papillatus

USDA symbol: STAMP

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Alaska  

Synonyms: Streptopus amplexifolius (L.) DC. ssp. papillatus (Ohwi) Á. Löve & D. Löve (STAMP3)   

Claspleaf Twistedstalk: An Uncommon Perennial for Specialized Gardens If you’re looking for something truly different in your garden, claspleaf twistedstalk (Streptopus amplexifolius var. papillatus) might catch your eye. This perennial forb is definitely not your typical garden center find, and there’s good reason for that. Let’s dive into what makes ...

Claspleaf Twistedstalk: An Uncommon Perennial for Specialized Gardens

If you’re looking for something truly different in your garden, claspleaf twistedstalk (Streptopus amplexifolius var. papillatus) might catch your eye. This perennial forb is definitely not your typical garden center find, and there’s good reason for that. Let’s dive into what makes this plant unique and whether it deserves a spot in your landscape.

What Is Claspleaf Twistedstalk?

Claspleaf twistedstalk is a perennial forb, which means it’s a non-woody plant that comes back year after year. As a forb, it lacks the significant woody tissue you’d find in shrubs or trees, with its growing points (those perennating buds) staying at or below ground level to survive harsh conditions.

This plant also goes by the botanical synonym Streptopus amplexifolius ssp. papillatus, so don’t be confused if you see it listed that way in plant databases or specialty catalogs.

Where Does It Grow?

Here’s where things get interesting – and a bit complicated. This variety of claspleaf twistedstalk is found in Alaska, but it’s actually considered non-native there. It’s managed to establish itself and reproduces on its own in the wild, showing it’s quite adaptable to Alaskan conditions.

Should You Plant Claspleaf Twistedstalk?

This is where we need to have an honest conversation. While claspleaf twistedstalk isn’t listed as invasive or noxious, its non-native status in Alaska raises some questions for environmentally conscious gardeners.

The Case for Planting It:

  • It’s a unique addition that most neighbors won’t have
  • As a perennial, it provides long-term garden value
  • It has proven adaptability to challenging growing conditions

The Case Against:

  • Limited ecological benefits compared to native alternatives
  • Very little horticultural information available
  • Difficult to source from reputable nurseries

Native Alternatives to Consider

If you’re drawn to the idea of an unusual perennial forb, consider exploring native Alaska plants instead. Native species will provide better support for local wildlife, integrate more naturally with your regional ecosystem, and often require less maintenance once established.

Growing Conditions and Care

Here’s where we hit a bit of a wall – specific growing information for this variety is quite limited. What we do know is that it has successfully established itself in Alaska’s challenging climate, suggesting it can handle:

  • Cold temperatures and harsh winters
  • Variable moisture conditions
  • Shorter growing seasons

However, without detailed horticultural guidance, growing this plant would be somewhat experimental. You’d need to observe its preferences and adjust care accordingly.

The Bottom Line

Claspleaf twistedstalk falls into that category of plants that are botanically interesting but practically challenging. While it’s not harmful to grow, the combination of limited availability, minimal care information, and non-native status makes it a questionable choice for most gardeners.

If you’re set on trying something unusual, you might have better luck focusing on native plants that are equally uncommon but offer clearer benefits to your local ecosystem. Your garden – and local wildlife – will likely thank you for it.

Claspleaf Twistedstalk

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Liliaceae Juss. - Lily family

Genus

Streptopus Michx. - twistedstalk

Species

Streptopus amplexifolius (L.) DC. - claspleaf twistedstalk

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