Plants of Hawaii Volcanoes National Park

Scientific Name Sophora chrysophylla (Salisb.) Seem.
Family Fabaceae (pea & bean family)

Other Names Mamane, mamani
Status Endemic
Distribution & Habitat Scattered in dry shrublands and forest to mesic forests.  Much less common as the forest becomes wet.  These trees form a dominant part of the subalpine vegetation on East Maui and Hawai`i and range in elevation from 450 to 3,240 m.  On all the main islands except Ni`iha and Kaho`olawe (Wagner, et al. 1990: 706).
Locations in this Guide Thurston Lava Tube (a single tree at the entrance trail from the parking lot), Kipuka Puaulu, Mauna Loa Strip Road, Top of the Strip Road
General Appearance
Shrubs or trees up to 15 m tall (Wagner, et al. 1990: 706).

This is a highly polymorphic species.

Kipuka Puaulu
Kipuka Puaulu Mauna Loa Strip Road (top of the road)

Top of the Strip Road

The trunks have a heavy texture.

Top of the Strip Road

Top of the Strip Road
Leaves
The leaves are pinnately compound with 12 to 20 leaflets.  The individual leaflets are 0.7 to 5 cm long and 0.3 to 2.3 cm wide (Wagner, et al. 1990: 706). Keamoku Flow

Keamoku Flow (Mauna Loa Strip Road)

Keamoku Flow
Flowers & Fruits
The flowers occur in terminal and auxillary racemes.  The corolla is yell and ranges from 11.5 to 21 mm long, and 8 to 20 mm wide (Wagner, et al. 1990: 706). Keamoku Flow

Mauna Loa Strip Road (top of the road)

Mauna Loa Strip Road (top of the road)

Thurston Lava Tube (at parking lot entrance)

Top of the Strip Road
The seed pods are moderately to strongly constricted around the seed.  They range from 2 to 16 cm long.

The seeds are reported by Wagner, et al. (1990: 706) to be brown to grayish black, although we have observed numerous examples  to yellow-orange seeds.  This is closer to Stone and Pratt's (1994: 247) description of bright yellow-orange seeds.

Keamoku Flow (Mauna Loa Strip Road)
Keamoku Flow Keamoku Flow

Phenology
Thurston Lava Tube A few flowers in a tree at the entrance. 5/6/01
Top of the Strip Road No flowers.  Seed pods are very abundant. 5/8/01
Thurston Lava Tube No flowers in the area. 6/16/01
     
Natural History Manane is resistant to fire and grows vigorously after a fire.  This species has been seriously impacted by feral goats and sheep.  Mamane has made a strong comeback in areas where goats and sheep have been excluded (Stone and Pratt 1994: 247).
Conservation
Miscellaneous Photos
Other Notes

References
Links to Other Sites

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Last Updated: 07/14/05

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