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Scale bar 10mm. Copyright CSIRO
Cotyledon stage, epigeal germination. Copyright CSIRO
10th leaf stage. Copyright CSIRO
Denhamia obscura (A.Rich.) Meisn. ex Walp.
Walpers, W.G. (1842) Repertorium Botanices Systematicae: 203. Type: ?.
Denhamia leucocarpum Steud., Nomenclator Botanicus 1: 491(1840), Type: ?. Leucocarpum obscurum A.Rich., Voyage de l'Astrolabe 2, Sertum Austrolabianum: 46(1834), Type: Northern Territtoy, Melville Island, (not Moreton Bay), Fraser. Denhamia xanthosperma F.Muell., Transactions and Proceedings of the Philosophical Institute of Victoria 3: 28(1859), Type: Northern Territtory, Arnhem Land, F. Mueller s.n.; syn: MEL.
Leaf blades about 5-12 x 1.5-3.5 cm, almost white on the underside, particularly the older leaves. Leaf bearing twigs reddish.
Capsules with woody valves. Capsules about 2.5-4 cm long.
Cotyledons elliptic, about 15-20 x 10-15 mm, with a midrib and about four other veins radiating from the base. First pair of leaves with two to three teeth on each side. At the tenth leaf stage: leaf blade margins with four or five sharply pointed teeth on each side; midrib raised on the upper surface; stipules small and inconspicuous, visible only with a lens.
Distribution and Ecology
There is a chance that this species may have medicinal properties as the inner bark was used in cases of toothache. (http://www.bri.net.au/medicine.html)
This species is one of the few native plants known to have been used as an aphrodisiac by the aborigines. Cribb (1981).
Shrub (woody or herbaceous, 1-6 m tall)