MāMane

sophora chrysophylla

The māmane is a beautiful, hardy woody species endemic to the high-elevation dry forests and shrublands of the Hawaiian Islands, most notably on the slopes of Mauna Kea and Mauna Loa. Belonging to the pea family, this resilient plant plays an irreplaceable role in Hawaii's subalpine ecosystem. It is famous for its vibrant, golden-yellow pea-like flowers that paint the volcanic landscapes with brilliant color, bringing life to otherwise stark environments. Beyond its visual appeal, the māmane is a critical keystone species. It serves as the primary habitat and food source for several endemic Hawaiian forest birds, including the critically endangered palila, which depends almost entirely on the plant's seeds for survival. Historically, its extremely dense, hard wood was highly prized by Native Hawaiians for making tools, house posts, and sled runners, making it a culturally and ecologically invaluable treasure of the archipelago.

Habitat: Found in subalpine dry forests, shrublands, and high-elevation volcanic slopes, particularly on the island of Hawaiʻi between 1,200 and 3,000 meters elevation.

Appearance

Māmane typically grows as a large shrub or a medium-sized tree, reaching heights of up to 15 meters, though often smaller at high elevations. It is easily identified by its pinnately compound leaves featuring small, oval, grayish-green leaflets that have a fine, velvety texture. During blooming periods, it bursts into clusters of bright, golden-yellow, pea-like flowers hanging from the branches. These flowers develop into distinctive, woody, four-winged seed pods that contain small, hard, bright yellow to orange seeds.

KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderFabalesFamilyFabaceaeGenusSophora

MāMane

Interesting facts

Māmane wood is so incredibly dense and hard that it was historically used by Native Hawaiians to make spade-like digging tools (ʻōʻō) and sled runners for downhill lava sledding (hōlua).

The gold-colored flowers of the māmane are a major source of nectar for native Hawaiian honeycreepers like the ʻapapane and ʻiʻiwi.

The seeds of the māmane contain high levels of cytisine, a toxic alkaloid that would be lethal to most animals, yet the endemic Palila bird eats them with no ill effects.

Special abilities

Hosts symbiotic rhizobia bacteria in root nodules to convert atmospheric nitrogen into nutrients, allowing growth in barren volcanic soils.

Accumulates toxic alkaloids, particularly cytisine, in its seeds and leaves to deter generalist herbivores and seed predators.

Possesses small, hairy, leathery leaves that minimize water loss in dry, high-altitude subalpine environments.

Measurements & details

Length: 200-1500 cm
Lifespan: 50-150 years
Incubation: 14-60 days

Diet & Feeding

As an autotrophic plant, the māmane produces its own organic compounds through photosynthesis, using sunlight, water, carbon dioxide, and soil minerals.

Primary Foods

Sunlight
Water
Carbon dioxide
Soil minerals

Foraging Method

Photosynthesis

Ecological connections

eaten by

Palila

Loxioides bailleui

The critically endangered palila bird feeds almost exclusively on the toxic seeds of the māmane.

eaten by

Feral Sheep

Ovis aries

Invasive sheep consume young seedlings and strip bark, severely threatening wild māmane populations.

mutualism

ʻApapane

Himatione sanguinea

The endemic Hawaiian honeycreeper feeds on the nectar of māmane flowers, aiding in pollination.

Traits

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Also known as

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Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How to identify MāMane?

The easiest way to identify MāMane is to use the Snappit nature identifier app.

How long is MāMane?

200-1500 cm

How long does MāMane live?

50-150 years

What does MāMane eat?

As an autotrophic plant, the māmane produces its own organic compounds through photosynthesis, using sunlight, water, carbon dioxide, and soil minerals.

Where is MāMane usually found?

Found in subalpine dry forests, shrublands, and high-elevation volcanic slopes, particularly on the island of Hawaiʻi between 1,200 and 3,000 meters elevation.

How does MāMane hunt?

Photosynthesis

How long do MāMane eggs take to hatch?

14-60 days