Climbing Onion

Also known as: Zulu Potato

Botanical Overview

Climbing Onion (Bowiea volubilis) belongs to the Liliaceae family. While not among the most extensively documented medicinal plants, this species has recorded uses that warrant attention from researchers and practitioners. The lily family (Liliaceae) includes bulbous herbs with erect stems, alternate leaves, and showy six-parted flowers with prominent stamens. The underground bulbs serve as storage organs rich in carbohydrates. Many species contain steroidal saponins and alkaloids with medicinal properties.

General Description

It is native to a region stretching from Kenya to Cape Province. It is the 14th most commonly sold medicinal plant in South Africa, used to treat various health conditions. Due to massive harvesting, populations of this plant have been significantly reduced. Due to its unique appearance, it is sometimes cultivated as a houseplant.

ⓘ Information
Description adapted from Wikipedia (CC BY-SA 4.0).

Family Context

The Liliaceae family is widely distributed in temperate regions. Notable medicinal members include:

Geographic Distribution

Climbing Onion has been recorded in Argentina, Brazil, Namibia, United States, and South Africa.

Traditional Uses

Climbing Onion has been traditionally used for digestive health.

Digestive health.

  • Purgative

For digestive complaints, the herb is typically prepared as a tea or decoction taken before meals. The bitter compounds stimulate digestive secretions and improve nutrient absorption. Some traditions use the powdered root or leaves in small doses as a stomachic tonic.

Active Compounds

Phytochemical research has identified 22 compounds in this species, including a diverse array of phytochemical classes (see the Complete Chemical Inventory below for the full list).

The identified compounds include the following categories:

  • Flavonoid: antioxidant compounds that protect cells from oxidative damage
ⓘ Information
Information on this page is compiled from Dr. Duke’s Phytochemical and Ethnobotanical Databases (USDA ARS), a public domain resource. Consult a healthcare professional before using any herbal preparation.
⚠ Caution
Traditional records: This plant has documented uses including Purgative, Poison. Self-medication with herbs carries risks including allergic reactions, drug interactions, and toxicity. Only use under the supervision of a qualified healthcare professional.

Distribution and Conservation

Reported distribution: Argentina, Brazil, Namibia, United States, South Africa.

Complete Use Records

CategoryCultural Context
CardiotonicAfrica
DropsyAfrica(Xosa)
FatalityAfrica
PurgativeAfrica(Fingu)
PoisonElsewhere
SterilityAfrica(Xosa)

Complete Chemical Inventory

CompoundFormulaMW
BOVOCHRYSOIDC₃₁H₄₄O₁₀576.7 Da
BOVOCRYPTOSIDEC₃₁H₄₄O₁₁592.7 Da
BOVOCYANOTOXIN
BOVOEOLOTOXIN
BOVOERYTHROTOXIN
BOVOGENINS
BOVOPURPUROSIDEC₃₁H₄₄O₁₀576.7 Da
BOVORUBOSIDEC₃₁H₄₂O₁₁590.7 Da
BOVOSIDE-A
BOVOSIDE-B
BOVOSIDE-C
BOVOSIDES
BOVOXANTHOTOXIN
BUFODIANOLIDE
GLUCOBOVOSIDE-AC₃₇H₅₄O₁₄722.8 Da
HELLEBRIGENINC₂₄H₃₂O₆416.5 Da
KILIMANDSCHAROGENIN-A
KILIMANDSCHAROGENIN-B
KILIMANDSCHAROTOXIN
NABOGENIN
SCILLIGLAUCOSIDINC₂₄H₃₀O₅398.5 Da
SINISTRIN

Data from PubChem (NIH/NLM, public domain).


References & Further Reading

External Research Links

Data Sources