• A view of the cinder desert

    Haleakalā

    National Park Hawai'i

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  • O`heo Stream and Pools Closed

    The O`heo stream, located along the Pipiwai Trail, remains closed due to high water and damaged stream monitoring equipment. Visitors are advised to abide by posted “stream closed” signs and the direction of park staff.

  • For your safety

    The Summit and Kīpahulu Districts are remote. An ambulance can take up to 45 minutes to arrive at either district from the nearest town. People with respiratory or other medical conditions should also be aware that the summit of Haleakalā is at 10,000 ft.

  • Drive cautiously - Endangered birds land on roadway

    Nēnē (Hawaiian geese) are nesting in the park and may land on or frequent park roads and parking lots. Drivers are reminded to drive at the posted speed limits and exercise caution.

Geraniums

Heralded as the "geranium capital of the world" by botanists, the high slopes of Haleakalā National Park are home to four species of Hawaiian geraniums found nowhere else on earth. These rare and unique plants are known as 'hinahina ("silver") or nohoanu ("cold-dwelling") in Hawaiian.

 
Geranium cuneatum subsp. tridens

Geranium cuneatum subsp. tridens can be found scattered throughout the subalpine shrubland at Haleakala.

NPS Photo

Geranium cuneatum subspecies tridens, or "silver geranium," is the most common species of geranium at Haleakalā. Its small silvery leaves, like the silversword, are covered with silky hairs that reflect sunlight and preserve moisture. The three triangular teeth on the leaf edges give it the name "tridens" -i.e. tri (three)-dent (teeth). You can see the silver geranium at the Headquarters Visitor's Center, along the Hosmer Grove Nature Trail, and in many other places in the shrubland.

 
Geranium multiflorum

The endangered Geranium multiflorum has vibrant pink and purple flowers.

NPS Photo

Geranium multiflorum, or "manyflowered geranium," has delicate pink, purple or white flowers that are pollinated by the native Hawaiian yellow-faced bee. The leaves are often tinged red, possibly an adaptation to protect them against the harsh alpine sun. These endangered plants are found in high-altitude grasslands and forests, and sometimes in the shrubland. You can see Geranium multiflorum planted at the Headquarters Visitors Center.

 
Geranium arboreum

The graceful Geranium arboreum is pollinated by native birds, who fit their curved beaks into the flowers. As a result of ungulate predation and the loss of native birds, G. arboreum has become critically endangered.

NPS Photo - Stacey Torigoe

Geranium arboreum is the rarest of the four, and is the only bird-pollinated geranium in the world! The beautiful curved red flowers are adapted to fit the bill of nectar-sipping native honeycreepers like the i'iwi, who pick up pollen on their foreheads and transfer it to other flowers. Once widespread across the lower slopes of Haleakalā, this critically endangered species is now restricted to nine isolated populations with fewer than 50 individuals. Park staff are actively growing and planting these endangered plants in moist, shady gulches where they thrive. You can see the sprawling stems of Geranium arboreum along the Hosmer Grove Nature Trail.

 
Geranium hanaense

The rare Geranium hanaense grows only in the high bogs of Haleakala.

NPS Photo - Woody Mallinson

Geranium hanaense is a rare, sprawling geranium found in high-altitude bogs on the eastern slopes of Haleakala. Geranium hanaense may represent an evolutionary transition-its silvery toothed leaves resemble Geranium cuneatum, while its white and purple flowers resemble Geranium multiflorum. Geranium hanaense was only recently discovered in 1988, and is in the process of being listed as an endangered species.

Did You Know?

Did You Know?

You might find squid beaks at 10,023 feet (3055 m) above sea level. Haleakalā National Park is home to the ʻUaʻu - the Hawaiian Dark-Rumped Petrel - sea birds that eat squid and regurgitate the indigestible beak ouside their burrows in the summit district.