Kingdom Plantae Family Campanulaceae Scientific name Brighamia rockii Rank Species | Order Asterales Genus Brighamia Higher classification Brighamia | |
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Similar Cyanea platyphylla, Delissea rhytidosperma, Cyanea lobata, Cyanea grimesiana, Clermontia pyrularia | ||
Brighamia rockii plants rare
Brighamia rockii, known as the Molokai ohaha or Pua ʻala in Hawaiian, is a species of flowering plant in the bellflower family, Campanulaceae, that is endemic to the island of Molokaʻi in Hawaii. Pua ʻala inhabits mesic shrublands and forests on rocky cliffs from sea level to 470 m (1,540 ft) on the island's northern windward coast. Associated plants include ʻōhiʻa lehua (Metrosideros polymorpha), alaheʻe (Psydrax odorata), lama (Diospyros sandwicensis), ʻūlei (Osteomeles anthyllidifolia), and naupaka (Scaevola gaudichaudii).
Contents
Pua ʻala reaches a height of 1–5 m (3.3–16.4 ft) and has a succulent, trunk-like stem that tapers from the base. The oval-shaped leaves are 6–22 cm (2.4–8.7 in) long and 1–15 cm (0.39–5.91 in) wide and form a rosette on the top of the plant. Each inflorescence contains three to eight trumpet-shaped white flowers.
Conservation
Pua ʻala has been extirpated from the islands of Lānaʻi and Maui. Threats to its survival include habitat loss, competition with alien plants, predation by goats and deer, and a lack of pollinators.
There are five occurrences of the plant remaining in the wild, with a total estimated population of fewer than 200. It is federally listed as an endangered species.
Some individuals have been cultivated and planted in the habitat.