North America Native Plant

Entireleaved Thelypody

Botanical name: Thelypodium integrifolium longicarpum

USDA symbol: THINL

Life cycle: biennial

Habit: forb

Native status: Native to the lower 48 states  

Entireleaved Thelypody: A Rare Arizona Native Worth Understanding If you’ve stumbled across the name entireleaved thelypody in your native plant research, you’ve discovered one of Arizona’s more mysterious botanical residents. This uncommon biennial forb represents the kind of specialized native flora that makes desert gardening both challenging and rewarding. What ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Entireleaved Thelypody: A Rare Arizona Native Worth Understanding

If you’ve stumbled across the name entireleaved thelypody in your native plant research, you’ve discovered one of Arizona’s more mysterious botanical residents. This uncommon biennial forb represents the kind of specialized native flora that makes desert gardening both challenging and rewarding.

What Makes This Plant Special

Entireleaved thelypody (Thelypodium integrifolium longicarpum) belongs to the mustard family and lives as a biennial, meaning it completes its life cycle over two years. Like other forbs, it’s an herbaceous plant without woody stems, putting all its energy into leaves, flowers, and seeds rather than building permanent woody structure.

What truly sets this plant apart is its rarity. With a conservation status of S5T2?, entireleaved thelypody falls into an undefined category that suggests limited population data and potential conservation concerns. This makes it a plant that deserves our respect and careful consideration.

Where You’ll Find It Growing

This native species calls Arizona home, and apparently only Arizona. Its limited geographic distribution makes it a true endemic treasure of the American Southwest.

Should You Grow Entireleaved Thelypody?

Here’s where things get complicated. While supporting native plants is always admirable, entireleaved thelypody presents some unique challenges:

  • Its rarity status means wild populations may be vulnerable
  • Limited cultivation information makes successful growing difficult
  • Biennial nature requires patience and planning
  • Specialized habitat needs are poorly documented

If you’re determined to include this plant in your landscape, the golden rule is responsible sourcing. Never collect from wild populations. Instead, seek out specialized native plant nurseries that propagate from ethically obtained seeds.

The Reality of Growing Rare Natives

Unfortunately, detailed growing instructions for entireleaved thelypody simply aren’t available in standard horticultural literature. This lack of information reflects both its rarity and limited cultivation history. Without knowing its specific soil preferences, water needs, or ideal growing conditions, even experienced gardeners face an uphill battle.

Better-Known Alternatives

If you’re drawn to native Arizona forbs but want more reliable growing information, consider these better-documented alternatives:

  • Desert marigold (Baileya multiradiata)
  • Brittlebush (Encelia farinosa)
  • Desert lupine (Lupinus arizonicus)
  • Ghost plant (Graptopetalum paraguayense)

Conservation Through Appreciation

Sometimes the best way to support a rare native plant is simply to learn about it and appreciate its place in the ecosystem. Entireleaved thelypody may not be the showstopper for your garden border, but it represents the incredible diversity of Arizona’s native flora.

By understanding and respecting plants like entireleaved thelypody, we become better stewards of our native landscapes. Whether you choose to attempt growing this mysterious biennial or simply appreciate it from afar, you’re participating in the important work of native plant conservation.

Remember: every rare native species tells a story about adaptation, survival, and the intricate web of desert life. Entireleaved thelypody’s story may be largely unwritten in gardening guides, but it’s no less valuable for that mystery.

Entireleaved Thelypody

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Capparales

Family

Brassicaceae Burnett - Mustard family

Genus

Thelypodium Endl. - thelypody

Species

Thelypodium integrifolium (Nutt.) Endl. ex Walp. - entireleaved thelypody

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