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Genus Micromyrtus Family Myrtaceae

Description: Shrubs.

Leaves opposite, imbricate, small and narrow, dotted with oil glands.

Inflorescences axillary, consisting of 1–3 flowers on a common peduncle, often forming terminal clusters. Flowers 5- or rarely 6-merous, white, pink or yellow. Sepals small. Petals free. Stamens equal to the number of petals and opposite them, or twice as many. Ovary 1-locular, placentation apical, or subapical to lateral, ovules 2–10, collateral, never superposed.

Fruit an indehiscent nut, scarcely enlarged from flower; seed usually solitary.


Photo © ANBG

Distribution and occurrence: World: c. 22 species, endemic Australia. Australia: Qld, N.S.W., Vic., S.A., W.A.

Text by Peter G. Wilson
Taxon concept:

 Key to the species 
1Flowers 6-merous; ovules usually 8Micromyrtus hexamera
Flowers 5-merous; ovules 2 or 42
2Ovules 2; hypanthium less than 1 mm longMicromyrtus minutiflora
Ovules 4–66; hypanthium usually more than 1 mm long
                       Back to 1
3
3Leaves with keel ciliate; margins of sepals fimbriateMicromyrtus blakelyi
Leaves with keel glabrous; margins of sepals minutely toothed to entire
                       Back to 2
4
4Hypanthia flanked with 2 lateral pairs of ribs.Micromyrtus ciliata
Hypanthia with 5–8 ribs, ± equally spaced.
                       Back to 3
5
5Hypanthia 5-ribbed.6
Hypanthia up to 8-ribbed, ribs branching acutely towards the base of hypanthia.
                       Back to 4
Micromyrtus striata
6Leaves obovate, oblanceolate to oblong, 0.6–1.4 mm wide; flowers distinctly pedunculate.Micromyrtus grandis
Leaves linear to oblanceolate, 0.5–0.8 mm wide; flowers ± sessile.
                       Back to 5
Micromyrtus sessilis

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