Denhamia bilocularis (F.Muell.) M.P.Simmons
McKenna, M.J., Simmons, M.P., Bacon, C.D. & Lombardi, J.A. (2011) Systematic Botany 36(4): 929.
Shrub or small tree to 10 m tall. Inner bark orange or orange-brown. Stems hairless with fine longitudinal ridges.
New growth often reddish, twig bark orange when scraped gently with a knife. Leaves simple, alternate. Stipules 2, free, lanceolate, usually 0.5-2 mm long. Petiole 2-7 mm long, articulation visible where petiole attaches to stem. Leaf blade elliptic to narrow-elliptic, oblong, 3-11 cm long, 1.5-7 cm wide, base cuneate or attenuate, margins toothed, apex acute, acuminate or rarely obtuse. Lateral veins 5-8 pairs. Surfaces hairless. Midrib raised on the upper surface. Lateral veins forming loops inside the blade margin. Twigs angled or longitudinally ribbed.
Inflorescence axillary, racemose. Pedicels 1.8-2.5 mm long. Flowers bisexual, actinomorphic, 4 or 5 merous. Sepals ± free, broadly ovate, c. 0.8 mm long. Petals free, oblong-ovate, 1.5-2.5 mm long, white to cream. Stamens inserted beneath disc, alternating with petals, anther filaments about 0.8-2 mm long, anthers globose, small. Disc prominent, about 1.2 mm diam.; ovary superior, 2(-4) locular; style elongate, stigma ± 2-lobed.
Fruit a capsule, 2 valved, globular or obovoid, ellipsoid or obcordate, 5-8 mm long, 4-7 mm diam., style persistent at apex, yellow. Seeds 1 or 2, black or brown, ellipsoid, 4 x 3 mm; aril thinly fleshy, smooth, orange, completely or partly covering seed. Embryo green. Cotyledons about 2.5 x 2 mm, radicle about 0.6 mm long.
Seed germination time 45 days. Seedling glabrous. Cotyledons elliptical, about 13 x 7-9 mm. Hypocotyl 4-angled, square in transverse section. First leaves oblanceolate, apex mucronate, base attenuate. Leaf blade margins toothed with 3-7 teeth on each side particularly towards the apex. Midrib raised on the upper surface. At the tenth leaf stage: leaf blades elliptic, apex apiculate, base attenuate, margins with 10-16 serrate teeth on each side. Midrib raised on the upper surface. Stipules lanceolate, about 1 mm long, base lacinate with an extension or lobe pointing backwards. Stems 4-5-angled with lines running down from the decurrent leaf bases. Roots orange.
This profile information and associated coding has been adapted from Hyland (2010); Cooper & Cooper (2004), McKenna et al. (2011), Simmons (2004) and Harden et al. (2014).
Maytenus bilocularis (F.Muell.) Loes., Die Naturlichen Pflanzenfamilien Edn. 2, 20 b: 135 (1942). Celastrus bilocularis F.Muell., Transactions of the Philosophical Institute of Victoria 3: 31 (1859), Type: "On the shrubby banks of the rivers Dawson and Burnett.". Maytenus sp. Windsor Tableland (B.Hyland 3416RFK).