Literature for Hibiscus arnottianus Wagner et al., 1990, 1999. Literature for Hibiscus arnottianus subsp. arnottianus Wagner et al., 1990, 1999. Literature for Hibiscus arnottianus subsp. immaculatus Wagner et al., 1990, 1999. Literature for Hibiscus arnottianus subsp. punaluuensis Wagner et al., 1990, 1999.
Malvaceae -- The Cacao, Linden, Mallow Family	Bibliography
Hibiscus arnottianus

General Information
Distribution
Habit	Shrubs or small trees up to 8(-10) m tall, glabrous to glabrate or sometimes young stems, petioles, and calyces copiously yellowish stellate pubescent.
Leaves	Leaf blades coriaceous, ovate-elliptic to broadly ovate, usually 4-15(-30) cm long, 2-11(-25) cm wide, upper surface glabrous or glabrate, lower surface glabrate to densely pubescent, margins entire or dentate throughout or near apex, apex acute to subacuminate, base obtuse to subcordate or cuneate, petioles usually less than 1/2 the length of blades, stipules subulate to filiform, 5-10 mm long, caducous.
Flowers	Flowers weakly fragrant, solitary, borne near the ends of the branches, pedicels stout, 1.5-6(-9) cm long, articulate; involucral bracts 5-7, reflexed to erect, linear-lanceolate to narrowly oblong, 5-15(-25) mm long, 1-2 mm wide; calyx tubular, (1.5-)2-3(-3.4) cm long, lobes deltate-acute, 3-10 mm long; petals flaring, white, occasionally with a pink tinge on abaxial side, sometimes aging pinkish, (5-)6-11(-13) cm long from point of insertion, adnate basally to the staminal column into a tube 1-3(-4) cm long; staminal column exserted, pinkish to dark red, rarely white, 8-19 cm long; filaments arising in upper 1/3-1/2 of staminal column, red or white, spreading, 0.8-3 cm long.
Fruit	Capsules chartaceous, obovoid-apiculate, ca. 1.7-2.5 cm long, glabrous, endocarp smooth, shiny, exocarp reticulate-veined.
Seeds	Seeds ca. 4 mm long, yellowish brown tomentose.
Chromosomes	2n = 80*, 84*