Flora of the Hawaiian Islands
Dicotyledon Literature for Dubautia herbstobatae
Wagner et al., 1990, 1999.
   Asteraceae -- The Sunflower Family Bibliography
      Dubautia herbstobatae
General Information
Distribution In the Hawaiian Islands, endemic to O`ahu.

Asteraceae - Dubautia herbstobatae Asteraceae - Dubautia herbstobatae















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Habit
Small spreading shrubs up to 5 dm tall; stems brown, becoming woody near growing point, glabrous when vegetative except ciliolate at leaf scars.
Leaves
Leaves opposite or rarely ternate, upper surface lustrous or shiny, coriaceous, narrowly elliptic, 2-5.5 cm long, 0.3-1.1 cm wide, 1-nerved or sometimes obscurely 3-nerved, glabrous or glabrate, margins entire or very shallowly 1-3-toothed above the middle, eciliate, apex narrowly acute, base sessile or briefly attenuate.
Flowers
Heads 5-15, often ternate or paired along a terminal central axis or cymosely arranged in simple, lax, paniculate inflorescences 3-9 cm long, 2.5-7.5 cm wide, peduncles slender, hispidulous-tomentose, lower ultimate ones usually 1-4 cm long, upper ones reduced to ca. 0.2 cm long; receptacle flat to low and broadly conical, false involucre consisting of a single series of 4-11 peripheral, strongly connate receptacular bracts 5-9 mm long, grayish silky pubescent; florets 4-20 per head, corollas yellowish orange, 3-5 mm long, glabrous and eglandular or the tubular portion bearing a few inconspicuous hairs; pappus of usually 16-20 very narrowly linear, ascending-setose bristles ca. 4-5.5 mm long.
Fruit
Achenes 4-6 mm long, grayish silky pubescent.
Chromosomes
2n = 26*