| General Information |
| Distribution | In the Hawaiian Islands,
endemic to
O`ahu.
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Habit
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Erect, suffrutescent perennial herbs 0.5-2 m tall, with horizontal lateral branches.
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Leaves
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Leaves pinnately compound or partly bipinnately compound, usually (6-)9-26 cm long including petiole, leaflets 3-7, coriaceous, ovate-lanceolate, usually 4-9 cm long, 2-5.5 cm wide, sparsely pubescent at least on veins, margins serrate.
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Flowers
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Heads 5-30 in compound cymes terminating lateral branches only, 3-4.5(-5) cm in diameter including ray florets, peduncles 1-3 cm long, sparsely pubescent; outer involucral bracts 4-8 mm long, the inner ones distinct; ray florets 5(-7) per head, sterile, rays yellow, 20-26 mm long, 7-8 mm wide; disk florets 9-20(-26) per head, perfect, corollas yellow, occasionally with black tips on lobes; pappus of 1-2(3) awns 0.5-1.5 mm long, often irregularly developed and decurrent into the margins of the achene.
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Fruit
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Achenes brown, straight or slightly curved but not twisted, narrowly winged, (7-)11-20 mm long, 1.5-2.8 mm wide, glabrous or sparsely setose on margins.
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Chromosomes
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2n = 72*
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