Australian Tropical Rainforest Plants - Online edition

Myrsine ireneae Jackes subsp. ireneae

Herb (herbaceous or woody, under 1 m tall)
Shrub (woody or herbaceous, 1-6 m tall)
Click/tap on images to enlarge
Flowers. © CSIRO
Leaves and fruits. © B. Gray
Fruit, many views, cross section and seed. © W. T. Cooper
Scale bar 10mm. © CSIRO
Cotyledon stage, epigeal germination. © CSIRO
10th leaf stage. © CSIRO

Jackes, B.R. (2005) Australian Systematic Botany 18: 416. Type: Qld, Timber Reserve 142 Zarda Logging Area. B. Hyland 6898, 26. vii. 1972; Holo: QRS; Iso: BRI, CANB.


Can grow into a small tree but often flowers and fruits as a shrub.


Leaf blades elliptic to obovate, about 4-17 x 1.7-4.8 cm, usually asymmetrical (unequal-sided), petioles about 0.6-1 cm long. Midrib depressed on the upper surface of the leaf blade. Oil dots clear and orbicular, streaky oil dots and reddish oil dots very rare or absent.


Flowers pedicellate, pedicels about 1-3 mm long, attached to short burrs on the twig. Calyx gland dotted, calyx tube about 0.5-1 mm long, lobes about 1 mm long. Corolla tube very short, lobes about 1.5-2.5 mm long. Anthers about 1-1.5 mm long, filaments very short. Ovary about 0.8-1.5 mm long. Stigma sessile, capitate. Ovules 3-4.


Fruits globose, about 4-5 mm diam., calyx persistent at the base. Pedicel about as long as the fruit. Seeds about 3-4 mm diam. Embryo about 2.5-3 mm long. Cotyledons about 1 mm long and about as wide as the radicle.


Cotyledons ovate to orbicular, about 7-9 x 6.8 mm, margins toothed with about 1-7 teeth on each side. Oil dots small, pink to red. First pair of leaves elliptic-ovate with a few teeth on both sides of the midrib. Midrib depressed on the upper surface. At the tenth leaf stage: leaf blade asymmetrical, margin toothed with about 8-10 teeth on each side mainly towards the apex. Oil dots mainly clear and orbicular. Stem and terminal bud clothed in gland-like hairs or processes. Seed germination time 97 to 146 days.

Distribution and Ecology

Endemic to Queensland, occurs in NEQ and CEQ. Altitudinal range from 500-1260 m. Grows as an understory plant in mountain rain forest.

Rapanea sp. (Zarda BH 6898), Australian Tropical Rain Forest Trees Shrubs & Vines : (2003). Rapanea sp. (Zarda LA B.P. Hyland 6898), Names & Distribution of Queensland Plants, Algae & Lichens : 119(2002).
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