Australian Tropical Rainforest Plants - Online edition

Myrsine smithii Jackes


Herb (herbaceous or woody, under 1 m tall)
Shrub (woody or herbaceous, 1-6 m tall)
Click/tap on images to enlarge
Leaves and fruit. © G. Sankowsky
Leaves and fruit. © G. Sankowsky
Scale bar 10mm. © CSIRO
Cotyledon and 1st leaf stage, epigeal germination. © CSIRO
10th leaf stage. © CSIRO
Family

Jackes, B.R. (2005) Australian Systematic Botany 18: 423. Type: Queensland, State Forest Reserve 607, Emerald Logging Area, OFarrell 131, 21.ix.1973; Holo: QRS.

Common name

Muttonwood

Stem

Usually flowers and fruits as a shrub 2-5 m tall.

Leaves

Leaf blades about 4.6-9 x 3.2-4.5 cm, petioles short, about 6-10 mm long, channelled on the upper surface. Oil dots red, the larger ones visible to the naked eye, the smaller ones visible with a lens. Lateral veins difficult to see, 14-19 on each side of the midrib, forming loops inside the blade margin. Terminal buds clothed in reddish brown hairs.

Flowers

Inflorescences produced in the axils of the leaves. Flowers shortly stalked, attached to a short spur or burr. Calyx and corolla marked with orange-yellow or orange-brown oil glands. Corolla lobes about 1.5-3 mm long. Anthers sessile. Ovary orange with about 2-3 ovules embedded in a glandular placenta attached to the base of the ovary. Stigma sessile, capitate.

Fruit

Fruits globular or depressed globular, about 4-6 mm diam. on a pedicel about 3-5 mm long. Surface marked by numerous orange-brown glands or oil dots. Seeds about 4 mm diam. Embryo about 4 mm long, cotyledons very short, less than 1 mm long, much shorter than and about as wide as the radicle.

Seedlings

Cotyledons about 2-4 x 1-3 mm, margins with a few teeth. First pair of leaves obovate, margins coarsely toothed with 2-3 teeth on each side. At the tenth leaf stage: leaf blade margin coarsely toothed with about 8-11 teeth on each side. Midrib raised on the upper surface of the leaf blade. Oil dots orange-red, orbicular, visible with a lens. Stem and terminal bud clothed in reddish gland-like hairs or processes. Seed germination time 136 to 208 days.

Distribution and Ecology

Endemic to NEQ. Altitudinal range from 1000-1200 m. Grows as an understory plant in mountain rain forest.

Synonyms
Rapanea sp. (Emerald JOF 131), Australian Rain Forest Trees, Shrubs & Vines : (2003). Rapanea sp. (Atherton K.J. White AQ91778), Names & Distribution of Queensland Plants, Algae & Lichens. : 119(2002).
RFK Code
3450
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