Common Name: Garden Lupin
Description: Annual or perennial herbs, rarely shrubs.
Leaves alternate, usually palmately compound with 5–13 leaflets; petiolate; stipules fused to petiole; stipels absent.
Inflorescence of terminal pedunculate racemes, flowers pedicellate; bracts caducous; bracteoles usually fused to calyx base. Calyx deeply 2-lipped, upper lip 2-toothed to entire, lower lip entire or shallowly 2- or 3-toothed. Standard ± circular, ovate or oblong, equal to wings and keel; wings connate at apex, enveloping the keel; keel incurved, apex dark, beaked. Stamens monodelphous; anthers alternately long and basifixed and short and dorsifixed. Ovary sessile; ovules 2 or more; style glabrous, incurved.
Pod oblong, 2-valved, dehiscent, ± flat, ± constricted between seeds, hairy, beak ± filiform; seeds 2–12, hilum sunken, aril not present.
Distribution and occurrence: World: c. 150–200 species, Mediterranean, southern Europe, North & South America & Africa. Australia: 6 species (naturalized).
Text by C. Gardner & L. Murray
| ||Key to the species|| |
|1||Leaflets glabrous above and scarcely silky to densely silky below.||2|
|Leaflets hairy on both surfaces.||3|
|2||Leaflets 5–9; raceme 5–20 cm long.||Lupinus angustifolius|
|Leaflets 9–17; raceme 20–60 cm long.|
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|3||Flowers bright yellow, strongly scented; seeds smooth; stipules dimorphic, those of lower leaves subulate, c. 8 mm long, those of upper leaves narrow-obovate or oblanceolate, 12–25 mm long.||Lupinus luteus|
|Flowers mostly blue, scarcely scented; seeds rough; stipules not dimorphic, mostly subulate c. 8 mm long.|
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|4||Stem hairs ≤1 mm long; pedicels 2–4 mm long; seeds 6–9 mm diam.||Lupinus cosentinii|
|Stem hairs 2–4 mm long; pedicels 5–9 mm long; seeds 10–14 mm diam.|
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