Results of DNA analysis in various studies (see, for example, R.B. Figlar & H.P. Nooteboom, Blumea 49: 87-100. 2004) have supported the concept that the various genera comprising the subfamily Magnolioideae would be more consistently treated as a single genus, Magnolia. This is the treatment followed here, though it is still not universally accepted[
Talauma dubia Eichler
Talauma ovata A.St.-Hil.
Photograph by: João Medeiros
Creative Commons Attribution 2.0
Magnolia ovata is an evergreen tree with a dense, ellipsoid crown; it can grow 20 - 30 metres tall. The bole can be 60 - 90cm in diameter[
The tree is sometimes harvested from the wild for local use as a medicine and source of wood. An ornamental tree, it can be used in landscaping[
The plant is toxic in all but small doses[
S. America - southern, eastern and central Brazil.
Atlantic rainforest, found in all forest formations favouring alluvial plains near rivers and low wet land[
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Grows well in a sunny position[
]. Succeeds in moist to wet soils[
A slow-growing tree[
The bark is febrifuge[
A leaf infusion is used in the treatment of diabetes[
Research has shown the presence of sterols, saponins, alkaloids and tannins in the plant[
Trials have failed to find any hypoglycaemic effect in the leaves of this plant. Considerable toxicity was demonstrated, however, making the use of the leaves inadvisable[
The sapwood and heartwood are not distinctly demarcated. The wood is moderately heavy, not durable and subject to the attack of insects. It is used for perfume boxes, toys, spools, linings, internal carpentry, wainscotings, coffins and boxes in general[
Seed - best sown as soon as it is ripe in a partially shaded position in individual containers. A very low germination rate can be expected, with the seed sprouting within 40 - 100 days[
]. The seedlings grow slowly and they should be ready to plant out 12 months or more later[
The seed has a very short viability of less than 30 days in storage[
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