North America Native Plant

Viper Beggarticks

Botanical name: Bidens campylotheca pentamera

USDA symbol: BICAP

Life cycle: perennial

Habit: subshrub

Native status: Native to Hawaii  

Synonyms: Bidens campylotheca Sch. Bip. var. pentamera Sherff (BICAP2)  âš˜  Bidens pentamera (Sherff) O. Deg. & Sherff (BIPE)   

Viper Beggarticks: A Rare Hawaiian Treasure Worth Protecting Meet the viper beggarticks (Bidens campylotheca pentamera), one of Hawaii’s most endangered native flowering plants. This remarkable little shrub might not be on every gardener’s wishlist, but it deserves our attention and respect as a critically important piece of Hawaii’s unique botanical ...

Rare plant alert!

Region: United States

Status: S2T1: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ 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) ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: United States

Viper Beggarticks: A Rare Hawaiian Treasure Worth Protecting

Meet the viper beggarticks (Bidens campylotheca pentamera), one of Hawaii’s most endangered native flowering plants. This remarkable little shrub might not be on every gardener’s wishlist, but it deserves our attention and respect as a critically important piece of Hawaii’s unique botanical heritage.

What Makes Viper Beggarticks Special?

Viper beggarticks is a perennial shrub that stays refreshingly compact, typically growing as a low shrub under 1.5 feet tall and never exceeding 3 feet at maturity. This modest size makes it an intriguing option for small spaces, though its rarity means most gardeners will never encounter it.

You might also see this plant listed under its botanical synonyms: Bidens campylotheca Sch. Bip. var. pentamera Sherff or Bidens pentamera (Sherff) O. Deg. & Sherff. But whatever name it goes by, this little beauty is 100% Hawaiian.

Where Does It Call Home?

Viper beggarticks is exclusively native to Hawaii, making it a true island endemic. This means you won’t find it growing naturally anywhere else on Earth – talk about being location-specific! Its distribution within Hawaii is extremely limited.

The Reality Check: Why This Isn’t Your Average Garden Plant

Here’s where we need to have an honest conversation. Viper beggarticks carries a Global Conservation Status of S2T1 and is listed as Endangered in the United States. This isn’t just rare – it’s hanging on by a thread in the wild.

What does this mean for gardeners? If you’re lucky enough to come across viper beggarticks, you should only consider planting it if you can guarantee the plant material was responsibly sourced through legitimate conservation programs or botanical institutions. Wild collection would be both illegal and harmful to the species’ survival.

Growing Conditions and Care

Unfortunately, specific growing requirements for viper beggarticks remain largely undocumented, which isn’t surprising given its endangered status. Most information about its cultivation needs has been lost or never recorded as the species became increasingly rare.

What we do know is that as a Hawaiian native, it evolved in tropical conditions and would likely require:

  • Warm temperatures year-round
  • Protection from harsh winds
  • Well-draining soil
  • Careful attention to watering needs

The Bigger Picture

Rather than focusing solely on how to grow viper beggarticks, perhaps we should consider what this plant represents. It’s a reminder of Hawaii’s incredible biodiversity and the urgent need to protect native species before they disappear forever.

If you’re passionate about Hawaiian native plants but can’t access viper beggarticks, consider supporting local conservation efforts or growing other native Hawaiian species that are more readily available through ethical sources.

Bottom Line

Viper beggarticks is a plant that deserves our respect and protection rather than casual cultivation. While it might make a fascinating addition to a specialized native Hawaiian garden, its endangered status means it belongs primarily in conservation programs and botanical preserves.

If you’re drawn to rare Hawaiian natives, connect with local botanical gardens, native plant societies, or conservation organizations. They can guide you toward responsible ways to appreciate and potentially grow Hawaiian endemic species while supporting conservation efforts.

Sometimes the most meaningful way to grow a plant is to help ensure it survives in its natural habitat for future generations to discover and admire.

Viper Beggarticks

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Bidens L. - beggarticks

Species

Bidens campylotheca Sch. Bip. - viper beggarticks

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