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Scale bar 10mm. Copyright CSIRO

Flower. Copyright Barry Jago

Flowers. Copyright CSIRO

Leaves and Flowers. Copyright CSIRO

Fruit, two views and cross section. Copyright W. T. Cooper

Leaves and fruit. Copyright A. Ford & F. Goulter

10th leaf stage. Copyright CSIRO

1st leaf stage. Copyright CSIRO

Cotyledon stage, epigeal germination. Copyright CSIRO
Citronella smythii
Family
Icacinaceae
Botanical Name
Citronella smythii (F.Muell.) R.A.Howard
Howard, R.A. (1940) Journal of the Arnold Arboretum 21: 475. Type: ?.
Synonyms
Chariessa smythii (F.Muell.) Becc., Malesia 1: 118(1877), Type: ?. Villaresia smythii F.Muell., Fragmenta Phytographiae Australiae 5: 156(1865), Type: Ad sinum Rockinghams Bay. Dallachy.. Villaresia adenophylla Domin, Bibliotheca Botanica 89(4): 604(1928), Type: Nord-Queensland: Regenwalder bei Harveys Creek (DOMIN I. 1910).
Common name
Soapbox; Beech, Northern Silky; White Oak; Beech, Silky; Northern Silky Beech; Silky Beech; Oak, White
Stem
Seldom exceeding 45 cm dbh. Oak grain in the wood. Living bark layer quite thin.
Leaves
Young shoots and twigs densely clothed in rusty or yellowish brown erect hairs. Leaf blades about 11-17 x 4-8.5 cm. Midrib depressed on the upper surface. Oak grain in the twigs.
Flowers
Inflorescence usually a raceme of heads. Petals about 3-4.5 mm long. Ovary +/- glabrous. Usually one style developed but one or two vestigial styles usually visible. Stigma terminal, not much wider than the style and less than 1/4 of the diameter of the ovary.
Fruit
Fruits 12-16 mm long. Seeds with a longitudinal groove formed by the intrusion of the endocarp.
Seedlings
Cotyledons ovate, about 39-45 x 30-38 mm, petioles hairy. First leaf blades ovate-elliptic, with both surfaces clothed in hairs. Hypocotyl clothed in hairs. At the tenth leaf stage: leaves hairy on the upper surface at least along the midrib and main lateral veins; terminal bud, stem, petiole and expanding leaves densely hairy.
Distribution and Ecology
Endemic to Queensland, occurs in CYP (as far north as Mt Carter) and NEQ. Altitudinal range from near sea level to 1200 m. Grows as an understory tree in well developed rain forest on a variety of sites.
Natural History
Fallen fruit eaten by Cassowaries. Cooper & Cooper (1994).
CYP
X
NEQ
X
Tree
X
RFK Code
6