Volume III (1980) - Flora of New Zealand Adventive Cyperaceous, Petalous & Spathaceous Monocotyledons
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Cordyline Comm. ex R.Br.

CORDYLINE Comm. ex Juss.

Tufted to arborescent perennials. Trunk woody, with characteristic secondary thickening, the stout axis continued vertically downwards in an equally stout rhizome (sometimes 2). Leaves crowded in tufts at ends of branched or unbranched stems, long-linear to narrow-elliptic, ± petiolate, with strong fibrous veins. Inflorescence a terminal panicle soon pushed aside by a leafy shoot from axil of adjacent leaf; bracts leaf-like. Flowers bisexual, small, actinomorphic, pedicellate; each pedicel with 2 chaffy bracts; perianth-tube short, becoming ± fleshy; lobes subequal, spreading. Staminal-filaments ± flattened; anthers dorsifixed and versatile. Ovary superior; stigma ± 3-lobed; ovules several to many in each locule. Fruit a globose berry. Seeds usually curved, black. Spp. c. 15, scattered from India to N.Z. and pacific, also recorded in S. America. Native spp. 5, adventive 1.

Key

1
Leaves contracted into long narrow, channelled petiole, ± 1cm wide
2
Leaves without narrow, channelled petiole, but contracted above expanded sheathing bases
3
2
Leaves linear-lanceolate, 1-2 m × 4-8 cm, thick, coriaceous; veins translucent (fresh), opaque (dry); transverse veinlets not visible (fresh or dry)
Leaves lanceolate, oblanceolate or oblong, 30-90 × 3-15 cm, thin, coriaceous; veins opaque (fresh or dry); transverse veinlets opaque (fresh), raised above surface and dark (dry)
3
Leaves broad-ensiform, 1-2 m × 10-15 cm, thick glaucous below; midrib and veins thick, conspicuous reddish or yellowish
Leaves linear to ensiform, 0.3-1m × 1-7 cm, thick to thin, coriaceous, not glaucous below; veins thin, evident or not, without colour
4
4
Veins translucent (fresh), dark and opaque (dry); transverse veinlets not visible (fresh), dark and opaque (dry)
Veins opaque (fresh or dry); transverse veinlets not visible (fresh or dry)
5
5
Leaves 30-100 × 3-7 cm, little narrowed above clasping base; nerves leaving midrib at angle of 2-3
Leaves ± 60 × 4.5-7 cm, perceptibly narrowed to 1-1.5 cm wide above expanded clasping bases; nerves leaving midrib at an angle of 6-8

Universally called "cabbage trees"; the Maori generic name is "Ti".

Leaves of Cordyline should be viewed against a light: the veins may be translucent or opaque in fresh leaves, not evident or dark in dried ones: transverse veinlets are not visible in fresh leaves, but are dark and opaque in several spp. in dried material.

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