Australian Tropical Rainforest Plants - Online edition

Denhamia fasciculiflora (Jessup) M.P.Simmons


Shrub (woody or herbaceous, 1-6 m tall)
Tree
Click/tap on images to enlarge
Dehiscing fruit. © CSIRO
Scale bar 10mm. © CSIRO
Cotyledon stage, epigeal germination. © CSIRO
10th leaf stage. © CSIRO
Family

McKenna, M.J. et al (2011) Systematic Botany 36(4): 929

Common name

Orange bark

Stem

Seldom exceeding 30 cm dbh. Thin orange layer present just under the dead bark.

Leaves

Leaf blades about 30-100 x 17-50 mm. Lateral veins curving but not forming definite loops. Midrib raised on the upper surface. Leaves often clustered, appearing almost as whorls.

Flowers

Petals oblong-ovate, about 1.7-2 mm long. Male flowers: Anther filaments about 1.8-2.2 mm long. Female flowers: Ovary much larger than in the male or hermaphrodite flower and stigma enlarged. Ovules 2 per locule.

Fruit

Capsules globular or obovoid, about 5-7 x 4-7 mm. Aril surrounding the seed. Cotyledons green.

Seedlings

Cotyledons elliptic, about 9-13 x 6-9 mm. First pair of leaves distinctly serrate, about 2-4 teeth on each side of the leaf blade. At the tenth leaf stage: leaf blade elliptic, glabrous, dentate, teeth conspicuous, aristate, about 4-12 on each side of the leaf blade; stipules minute, visible only with a lens; stem +/- 4-angled, winged or longitudinally ribbed. Roots orange. Seed germination time 120 to 207 days.

Distribution and Ecology

Endemic to Queensland, occurs in CYP and NEQ. Altitudinal range from near sea level to 500 m. Grows in drier rain forest and monsoon forest.

Synonyms

Maytenus fasciculiflora JessupFlora of Australia 22: 223. Type: Annan R. crossing, Cooktown road, Qld, 27 July 1973, B.P. Hyland 6793; holo: BRI; iso: QRS.

RFK Code
646
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