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Haplostichanthus submontanus subsp. sessiliflorus

Family

Annonaceae

Botanical Name

Haplostichanthus submontanus subsp. sessiliflorus Jessup

Jessup, L.W. (2007) Flora of Australia 2: 449. Type: Queensland, Curtain Fig near Yungaburra, 5 Dec. 1984, L.W. Jessup 695. Holo: BRI.

Synonyms

Haplostichanthus sp. (Topaz LWJ 520), Australian Tropical Rain Forest Plants, Trees , Shrubs & Vines: (2003), Type: ?.

Stem

Usually flowers and fruits as a shrub about 1-4 m tall.

Leaves

Twig bark strong and fibrous when stripped. Young shoots clothed in brown or golden appressed hairs. Leaf blades about 6-13 x 1.5-4.5 cm. Upper surface of the leaf blade arched between the lateral veins. Lateral veins form loops well inside the blade margin. Oil dots visible with a lens.

Flowers

Flowers about 8-11 mm diam. Ovaries hairy, clothed in downy copper-coloured appressed hairs.

Fruit

Fruit about 19 x 13 mm. Seeds about 9 x 8 mm. Embryo about 1 mm long. Cotyledons about as wide as the radicle.

Seedlings

First pair of leaves ovate, alternate, margins smooth. At the tenth leaf stage: leaf aromatic when crushed; leaf blade ovate to elliptic, apex acuminate to acute, base cordate to obtuse. Stems and terminal buds clothed in brown hairs. Lateral veins difficult to distinguish but forming loops inside the blade margin.

Distribution and Ecology

Endemic to NEQ, known only from a few localities on the Atherton Tableland. Altitudinal range from 700-1300 m. Grows as an understory shrub in well developed upland rain forest, more common on soils derived from vesicular basalts.

Natural History

Food plant for the larval stages of the Green Spotted Triangle Butterfly. Sankowsky & Neilsen (2000).

NEQ

X

Shrub (woody or herbaceous, 1-6 m tall)

X

RFK Code

3316