Literature for Tetramolopium humile Wagner et al., 1990, 1999. Literature for Tetramolopium humile subsp. haleakalae Wagner et al., 1990, 1999. Literature for Tetramolopium humile subsp. humile Wagner et al., 1990, 1999.
Asteraceae -- The Sunflower Family	Bibliography
Tetramolopium humile

General Information
Distribution
Habit	Gynomonoecious, cespitose, dwarf shrubs 8-20 cm tall; stems branched at base, densely glandular, somewhat resinous pilose or hispidulous.
Leaves	Leaves linear-oblanceolate or oblanceolate to spatulate, 10-25 mm long, 0.8-3 mm wide, densely glandular hispidulous, margins entire, apex obtuse, petiolate.
Flowers	Heads solitary or 5-7 in corymbose-paniculate inflorescences, peduncles 2-3.5 cm long, capitate glandular, bracts linear-subulate; involucre cylindrical, 7-9 mm high, 5-7 mm in diameter, bracts (22-)24-45, the inner ones often purple-tipped, linear or linear-lanceolate, densely capitate glandular or very sparsely strigose in subsp. humile, scarious hyaline-margined, narrowly so in outer bracts, entire or fimbriate at apex, acuminate; receptacle 1.2-1.4 mm in diameter; ray florets (13-)20-30(-36) per head, in a single series, rays white or tinged lavender, 2.9-3.3 mm long, 0.7-0.9 mm wide; disk florets perfect, 7-24 per head, corollas pink to purple, rarely yellow, tubular, 6.5-7.5 mm long, the tube 3-4 mm long; pappus dull yellowish brown, stout, 5.5-7(-8) mm long, longer than involucre.
Fruit	Achenes fusiform-cylindrical, 3.3-4(-4.5) mm long, 0.7-0.8 mm wide, densely glandular and strigose, some glands large and globose, containing a resinous substance, faces obscurely 1-nerved basally or nerveless.
Chromosomes	2n = 18*