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Plant Profile

(Dubautia kalalauensis)

Description
  • Global Rank: G1 - Critically Imperiled
  • Legal Status: Federally Endangered
  • Family: Asteraceae
  • State: HI
  • Nature Serve ID: 818666
  • Date Inducted in National Collection:

D. kalalauensis is a member of the sunflower family, specifically of the Hawaiian silversword alliance. This alliance refers to a diverse group of taxon that had undergone rapid evolution from a single immigrant plant species that migrated to the Hawaiian islands around five million years ago. This shrub has opposite lime green to yellow green leaves and florets that range from purple to green to brown in color.

Participating Institutions
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Updates
Clarice Mendoza
  • 09/15/2017

Main ecological threats to this shrub include competition with introduced invasive plants and stochastic events due to the effects of climate change.

Clarice Mendoza
  • 09/15/2017

There are an estimated 25 individuals left of this silversword species from a single population.

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Photos
Nomenclature
Taxon Dubautia kalalauensis
Authority B.G. Baldwin & G.D. Carr
Family Asteraceae
CPC Number 44868
ITIS 780679
USDA
Common Names Silversword | Na`ena`e | naenae
Associated Scientific Names Dubautia kalalauensis
Distribution Endemic to the Hawaiian island of Kaua`i, specifically the Kalalau Valley on the island's northern coast. It has been observed to be growing from 1,189 to 1,219 meters in elevation.
State Rank
State State Rank
Hawaii SNR
Habitat

Preferred habitats of D. kalalauensis are on steep slopes and by the sides of streams in densely vegetated forests.

Ecological Relationships

This shrub grows in forests dense with `ohi`a lehua trees. It grows in the understory of these trees alongside Hydrangea shrubs, Scaevola fan-flowers, Stenogyne herbs, and Cheirodendron ivies.

Pollinators
Common Name Name in Text Association Type Source InteractionID
Reintroduction
Lead Institution State Reintroduction Type Year of First Outplanting

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