Australian Tropical Rainforest Plants - Online edition
Xanthostemon verticillatus (C.T.White & W.D.Francis) L.S.Sm.
Smith, L.S. (1956) Proceedings of the Royal Society of Queensland 67: 38.
Bloomfield Penda; Penda, Bloomfield
Usually poorly formed and multistemmed as a result of flood damage.
Leaves in whorls of 3-5. Leaf blades rather narrow, about 5-6 x 1-1.5 cm, petioles about 0.4-0.5 cm long. Oil dots visible with a lens. Generally 1 or 2 oil dots per reticulation. Old leaves turn red prior to falling.
Calyx tube (hypanthium) glabrous, about 5-6 x 10-12 mm, lobes glabrous outside, pubescent inside, broadly triangular, about 3.5-4 mm long. Petals pubescent, variable in shape, about 6-8 mm long, with linear, pubescent, staminode glands about 3 mm long at the base. Stamens about 40-50. Staminal filaments cream, about 15-20 mm long, each inserted in an orifice in the base of the anther, anthers about 1-1.5 mm long. Ovary glabrous, surrounded by but not enclosed in the calyx tube (hypanthium). Ovary about 4 mm diam., placentas peltate. Style about 28-35 mm long. Stigma small and terminal.
Cotyledons almost orbicular, about 4-5 mm diam. At the tenth leaf stage: leaf blade narrowly elliptic or obovate, apex acute, base attenuate, upper surface with a few hairs along midrib towards the base and about the margin of the leaf blade; oil dots very small, visible with a lens, more obvious near the margin of the leaf blade; petiole hairy. Seed germination time 11 days.
This little-known species has great potential for horticulture. A small tree that in cultivation flowers as a shrub or grown in a pot. The flowers are pale yellow.