Wagner, Warren L., Derral R. Herbst and S. H. Sohmer. 1999. Manual of the Flowering Plants of Hawai

Flora of Hawaii:

Distribution     
In the Hawaiian Islands, endemic to Maui.

Habit
Sprawling, many-branched shrubs 1-2 m tall, forming loosely tangled clumps that sprawl on or among the branches of other vegetation; branches ascending, densely leafy along the new growth, young parts densely whitish tomentose. 

Leaves
Leaves chartaceous, narrowly elliptic, 9-18 cm long, 0.8-2.6 cm wide, upper surface arachnoid tomentose when young, becoming glabrate, lower surface densely grayish white tomentose, margins coarsely serrate, base long-attenuate, petioles 0-1 cm long.  Flowers  

Flowers
Heads in compact, arachnoid tomentose panicles 5-13 cm long, peduncles 0-5 mm long; involucre ovoid to obovoid, 4-5 mm high, 2-2.5 mm in diameter, the bracts purple-tinged, margins serrulate, sometimes only in upper 1/2, apex attenuate-aristate to mucronate; ray florets 12-14 per head, female, rays cream-colored, 0.6-0.8 mm long, the corolla tube 1.5-1.6 mm long; disk florets 7-12 per head, male, corollas campanulate, ca. 2.5 mm long, the expanded part 1-1.3 mm long, glandular puberulent, the lobes 0.5-0.6 mm long, style lobes not separating; pappus of 4-9 short, subequal bristles.   

Fruit
Achenes ca. 1.5 mm long, glabrate to sparsely puberulent near base.   

Chromosomes
2n = 36*