Lupinus angustifolius L. 1753, Sp. Pl:721 – narrow-leafed or blue lupin.
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Description
Distribution and common names: Pan-Mediterranean, native and semi-cult.; Australia, naturalized and cult.; elsewhere, cult. "Narrow-leafed lupin", "blue lupin" (USA). Scientific name: Lupinus angustifolius L.
Diagnostic features: Stems erect, well branched, to 60(100)cm, with rather sparse short hairs. Leaflets 5-9, less than 4cm, linear.Lower lip of calyx 6-7mm. Plants are 20-150 cm high. Stalks are sparsely sericeous, with numerous lateral branches. Leaves are developed from 5-9 linear-lanceolate or narrow-linear leaflets, 20-40 х 2,5 mm in size, the upper surface is glabrous, the lower surface is sericeous. The corolla is blue, violet, less frequently pink and white. The colouring of seeds varies from dark grey (almost black) with light spots and specks of miscellaneous size, grayish brown and brown up to light grey and white. Usually seeds with coloured testa correlate with cyan and pink flowers. In these two characters (traits) homologous variability is observed. Unpigmented (white) seeds are typical for white-flowered and lilac plants. These combinations of characters do not demonstrate any geographic arrangement. There is no abrupt gap between cultivated and wild forms. On the contrary, transition between them appears very smooth. Therefore there is nothing to justify the existence of two species (L. linifolius Roth. and L. opsianthus Atab. et Mais.) and also two subspecies (subsp. angustifolius and subsp. reticulatus (Desv.) Franko et Silva.) differing only on in the width of leaflets and the size of seeds (quantitative characters). Habitat: Introduced-casual; imported for grain and being used in trials as seed-crop, scarce casual at docks and waste places.
The scheme of classification of Lupinus angustifolius L.
13 varieties of L. angustifolius L. are disclosed distinctly differing from each other by the colour of seeds and the corolla. Variations in the colour of cotyledons, vegetative parts and carina have been used for identification of 12 subvarieties. Besides, the plants with determined branching and fascicular stems are described as 8 separate forms.
REFERENCES:
1. http://koti.mbnet.fi/bkurl/Lupin.htm Kurlovich B.S. (2002) Lupins. Geography, classification, genetic resources and breeding , St. Petersburg, “Intan”, 468p.
2. Zhukovsky, P.M. 1929. A contribution to the knowledge of genus Lupinus Tourn. Bull. Apll. Bot. Gen. Pl.-Breed. , Leningrad-Moscow, XXI, I:16-294.
3. . Gladstones, J.S. 1998. Distribution, Origin, Taxonomy, History and Importance. In: J.S. Gladstones et al. (eds.), Lupin as Crop Plants. Biology, Production and Utilization, 1-39.