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NZ Plants

Coprosma robusta - karamū

Coffee family: Rubiaceae

Coprosma robusta is a many branched shrub with leathery elliptic-oblong leaves. Stipules (appendages at the base of leaf stalks) are fused at their bases and have dark glandular tips when young. Pits (domatia) are found on the undersideof leaves where lateral veins join the midrib.
An endemic species found throughout New Zealand.

Vegetative characteristics

Reproductive characteristics

Plant form: shrub up to 6 m

Flower symmetry: symmetric


Flower size: 2-3 mm diam.

Leaf form: undivided, elliptic-oblong

Sepals: 4-5

Leaf size: 50-120 cm

Petals: 4- 5, green

Leaf arrangement: in opposite pairs along the stem

Sexuality: unisexual on different plants

Leaf attachment: stipules

Stamens: 4-5

Leaf margin: smooth

Ovary: below petals

Leaf surface: hairless with pores (domatia) on undersurface

Fruit: fleshy, orange, red