Volume III (1980) - Flora of New Zealand Adventive Cyperaceous, Petalous & Spathaceous Monocotyledons
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Asparagus L.

ASPARAGUS L.

Evergreen or summer-green perennials, roots fleshy and cylindric or tuberous. Stems erect or climbing, branched, often woody. Leaves reduced, scale-like, often with basal spine, with solitary or fascicled needle or leaf-like cladodes characteristic for each sp. Flowers small, campanulate, usually axillary or terminal, solitary or in small fascicles, or racemose on special branches lacking cladodes; pedicels articulate; segments 6, ± similar, free or nearly so, spreading above. Berry 1-several seeded. Seeds globose or flat on one side. Spp. c. 300, of Africa, Europe, Asia and Malaysia. Adventive spp. 4.

Key

1
Cladodes solitary at each node, ovate-lanceolate, 4-15 mm wide
Cladodes 2-12 per node, linear, < 1.5 mm wide
2
2
Stems erect, stiff; flowers unisexual
Stems climbing or twining; flowers hermaphrodite
3
3
Cladodes flattened, 3 per node, rarely 2, 4 or 5
Cladodes terete and needle-like, 7-12 per node
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