Genus Clermontia

The group contains morphologically divergent species, and was long thought to have derived from at least three introductions: one for Lobelia and Trematolobelia, one for Brighamia, and one for Clermontia, Cyanea, and Delissea.

Species in the genus Clermontia of plants

 
 

Kohala Mountain clermontia - There are fewer than 250 individuals remaining in the wet forests on the slopes of the volcano. Threats to the species include disturbance by feral pigs, deer, rats, and people, and invasive plant species.

 
 

Hillside clermontia - There are ten known total occurrences of the plant and probably fewer than 1000 individuals remaining.

 
 

Oahu clermontia - Clermontia oblongifolia is a species of flowering plant in the bellflower family known by the common name Oahu clermontia. It is one of several Hawaiian lobelioids in genus Clermontia that are known as ?oha wai. This plant is native to three of the Hawaiian Islands, where one subspecies is not uncommon but the other two are very rare and endangered.

 
 

Pele clermontia - There are two subspecies. When the plant was placed on the endangered species list, only ssp. peleana was believed extant, and it was known from eight remaining wild plants. The last of the eight died in the year 2000, and the species was then only known from one cultivated plant. Breeding efforts produced a number of seedlings that were transplanted into the species' native habitat, and by 2007, one of them was flowering.

 
 

Pear clermontia - This is a small tree which grows in Metrosideros polymorpha and Acacia koa dominated montane wet and subalpine dry forests on the slopes of Mauna Loa and Mauna Kea between 3,000 and 7,000 ft . Associated plants include Lythrum maritimum and Rubus hawaiensis. It has toothed leaf blades borne on winged petioles. The plant blooms in November and December in greenish white double-lipped flowers with green-tipped sepals. Pear-shaped fruits occur soon after.

 
 

Hana clermontia - This is a shrub which can reach five meters in height. It grows in wet Metrosideros forests. Some individuals are protected within Haleakal? National Park. Threats to the species include invasive plant species such as glory bush and Vaseygrass , and feral pigs, which inflict severe damage upon the ecosystem.