Alangium polyosmoides (F.Muell.) Baill.

de Wilde, W. J. J. O. & Duyfjes, B. E. E., 2017, The species of Alangium section Rhytidandra (Alangiaceae), Blumea 62 (1), pp. 75-83 : 79

7. Alangium polyosmoides (F.Muell.) Baill.

Alangium polyosmoides (F.Muell.) Baill. (1864) 195; Hewson (1984) 11, f. 3. ― Pseudalangium polyosmoides F.Muell. (1860) 84. ― Rhytidandra polyosmoides (F.Muell.) F.Muell. (1864) 172. ― Type: Beckler s.n. (holo MEL MEL607318), Australia, New South Wales, Clarence River, fl.

Tree 4–20 m tall; twigs (blackish) brown, 1.5–3 mm diam, glabrous or (conspicuously) hairy. Leaves: petiole (0.5–)1(–1.5) cm long; lamina drying brownish green, glabrous or hairy, ovate or elliptic, 6‒12 by 2.5‒4 cm, base (strongly) asymmetric, (sub)- rounded or cuneate, apex acute-acuminate; veins pinnate, 4‒6 at each side, tertiary venation faint or distinct, (reticulate or) scalariform. Inflorescences solitary peduncled compound cymes, glabrous or hairy, 2‒10-flowered; peduncle 5‒15 mm long. Flowers variously appressed (grey-)hairy; pedicel 1.5‒4 mm long; corolla in bud (8‒) 10‒15 mm long, base not swollen, apex (sub)obtuse or rounded; ovary and calyx ± narrow, 2.5‒3 mm long, not ribbed, greyish brown-hairy; limb (0.5‒) 1 mm long, not spreading, 1.5‒2 mm wide at margin, with 5 low lobes; petals (4–)5‒8, inside hairy or sparingly hairy, 8‒15 mm long, somewhat coherent at base; stamens 5, (8‒) 10‒14 mm long, at base slightly adnate to petals, filament 5‒9 mm long, hairy in the middle, anther 3‒5 mm long, the thecae usually slightly sagittate at base, connective glabrous; style 5‒8 mm long, hairy, stigma lobes c. 1 mm long. Fruit 1‒6(‒8?) per infructescence, ripening glossy black (always?), early glabrescent, ovoid-ellipsoid, c. 15 mm long; calyx remnant small.

Distribution ― East Australia (Queensland to New South Wales).

Note ― Alangium polyosmoides is a variable species, in which two taxa, apparently with some intermediates, can be recognised; we follow Bloembergen (1939) and Hewson (1984) in ranking them as subspecies.

Key to the subspecies

1. Indument composed of hairs 0.1‒0.5 mm long, plant early glabrescent. Internodes glabrous a. subsp. polyosmoides