SafePlants

Brighamia insignis: The Enigmatic Hawaiian Palm

Brighamia insignis, a captivating succulent endemic to Hawaii, goes by several common names that reflect its unique appearance: `Olulu, Alula (Hawaiian), Vulcan Palm, or, most endearingly, Cabbage on a Stick. Its unusual morphology and critically endangered status make it a fascinating subject for plant enthusiasts.

Considerations for Pets

• Brighamia insignis has succulent stems and fleshy leaves.

Considerations for Children

• Brighamia insignis is sometimes referred to as "Cabbage on a Stick" which may appeal to children.

Taxonomy and Nomenclature

• Scientific Name: Brighamia insignis A. Gray
• Family: Campanulaceae (Bellflower Family)
• Kingdom: Plantae
• Taxonomic Rank: Species
• Synonyms:
  • Brighamia remyi H. St. John
  • Brighamia citrina (C.N. Forbes &amp Lydgate) H. St. John
  • Brighamia citrina var. napaliensis H. St. John

Distribution and Habitat

• Brighamia insignis is endemic to the Hawaiian Islands, specifically Kaua`i.
• It is found growing on steep sides of volcanic mountains and coastal cliffs.

Morphological Characteristics and Growth Habits

• Brighamia insignis is a caudiciform succulent, with a thick, stout, generally unbranched stem typically growing to 1-2 meters in height.
• The stem is swollen at the base.
• It features a rosette of large, fleshy, spoon-shaped leaves.
• New leaves form in the crown, while older, lower leaves turn yellow.

Ecological Role

• The plant's drastic reduction in wild populations is due to loss of pollinators.

Quirky Facts

• Brighamia insignis is one of the most unusual plants in the Hawaiian flora.
• It has been described as looking like a "cabbage on a stick" because of its rosette of fleshy leaves atop a thick stem.

Further Information

• Information on Brighamia insignis, including nomenclature, synonymy, status, and distribution, can be found in the "Flora of the Hawaiian Islands."
• IUCN Red List: http://dx.doi.org/10.2305/IUCN.UK.2003.RLTS.T44080A10849319.en