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Rubus megacarpus

P. Royen

Mt Wilhelm blackberry

Has a deadly poisonous lookalike — see comparison below

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Description

A straggling shrub. It grows 1.5 m long. The flowers are greenish white. They can occur singly on in groups of 2-3. The fruit are oval and purplish grey. They can be 5.5 cm long by 4 cm across.

Distribution

It is a tropical plant. It has been recorded at 3,750 m above sea level on Mt Wilhelm in Papua New Guinea.

Where It Grows

Papua New Guinea, PNG,

Dangerous Lookalikes

This plant can be confused with the following toxic species. Always verify identification carefully before consuming any wild plant.

DEADLY

Red Baneberry

Actaea rubra

Walter Siegmund (talk)

Safe

Mt Wilhelm blackberry

Rubus megacarpus

President and Fellows of Harvard College

Red Baneberry: Short herbaceous plant (no thorns), berries on thick red stems, each berry has a single seed, compound sharply-toothed leaves.

Mt Wilhelm blackberry: Thorny woody canes (brambles), aggregate berry made of many drupelets, berries pull easily from receptacle.

References (1)

  • World Checklist of Useful Plant Species 2020. Royal Botanic Gardens, Kew

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