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Gen. (AQ520454) sp. Shute Harbour (D.A.Halford Q811)

Family

Rubiaceae

Botanical Name

Gen. (AQ520454) sp. Shute Harbour (D.A.Halford Q811)

() : . Type: ?.

Stem

Usually flowers and fruits as a shrub about 1-5 m tall but occasionally grows into a small tree.

Leaves

Stipules broad-based, keeled on the outer (abaxial) surface but abruptly narrowed into an awl-like apex. Leaf blades about 8-12 x 3-6 cm, domatia (if present) are foveoles (with hairy pits) and may be visible even from the upper surface. Petioles about 0.2-0.3 mm long.

Flowers

Flowers pleasantly perfumed. Calyx lobes absent or reduced to very small teeth visible only with a lens. Corolla tube about 15-19 mm long, lobes of a similar length. Anthers +/- sessile.

Fruit

Fruit surface smooth, not ribbed or rugose. Fruits ovoid, about 20 x 9 mm. Calyx tube or other remnants of the calyx present at the apex of the fruit. Pericarp flesh orange in colour. Seeds about 3-4 x 2-3 mm, laterally compressed. Testa surface rough. Embryo about 1.5 mm long, cotyledons wider than the radicle.

Seedlings

Cotyledons obovate to orbicular, about 8-9 x 7-9 mm. First pair of leaves opposite, stipules keeled, interpetiolar, about 1.5-2 mm long. At the tenth leaf stage: leaf blade obovate, about 30-45 x 10-11 mm, base cuneate, petiole very short, about 1-1.5 mm long. Stipules interpetiolar, triangular, about 2 mm long.

Distribution and Ecology

Probably endemic to Queensland, occurs in CYP, NEQ and southwards as far as coastal central Queensland. Grows as an understory plant in rain forest, monsoon forest and vine thickets.

Natural History

Believed to be a new genus and species within the family Rubiaceae.

CYP

X

NEQ

X

Herb (herbaceous or woody, under 1 m tall)

X

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

X

RFK Code

3476