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Volume IV (1988) - Flora of New Zealand Naturalised Pteridophytes, Gymnosperms, Dicotyledons
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Lupinus L.

LUPINUS L.

Annual or perennial herbs or shrubs. Lvs palmately 5- or more foliolate, very rarely 3- or 1-foliolate, petiolate; leaflets entire; principal lateral veins conspicuous or not; stipules adnate to petiole. Infls terminal, racemose, few- to many-flowered; bracts usually caducous. Calyx bilabiate; lips much > tube; upper 2 lobes connate into an entire, 2-toothed or 2-partite lip; lower 3 lobes connate into an entire or 3-toothed lip. Stamens connate into a closed tube; alternate anthers long and basifixed or short and versatile. Style glabrous; stigma terminal, often bearded. Pod 2-valved, ± straight, dehiscent, not armed, 2-many-seeded; seeds estrophiolate, rough or smooth.

Key

1
Perennial herbs or woody shrubs; pedicels 5-14 mm long
2
Annual herbs; pedicels 1-4 mm long
3
2
Woody shrub; leaflets 3-10 mm wide; corolla usually yellow; fl. sweetly scented
2. *arboreus
Herb; leaflets (5)-10-30 mm wide; corolla of various colours, usually blue, pink or white; fl. not or slightly scented
4. *polyphyllus
3
Leaflets 2-5 mm wide; corolla light blue to dark purplish blue
1. *angustifolius
Leaflets 8-17 mm wide; corolla yellow or white, sometimes tinged blue
4
4
Fls regularly verticillate; upper lip of calyx deeply 2-partite; corolla golden yellow
3. *luteus
Fls alternate, or subverticillate in part of infl. only; upper lip of calyx entire; corolla white or tinged blue
*albus ζ

c. 200 spp., Mediterranean, America, also extending to mountains of tropical Africa. Naturalised spp. 5.

Several Lupinus spp. are grown as forage crops.

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