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Retama
''Retama'' is a genus of flowering bushes in the legume family, Fabaceae. It belongs to the broom tribe, Genisteae. ''Retama'' broom bushes are found natively in North Africa, the Levant and some parts of southern Europe. ''Retama raetam'' and ''Retama monosperma'' have white flowers, while ''Retama sphaerocarpa'' has yellow flowers. It remains an open question in taxonomy whether the members of the ''Retama'' genus should be incorporated into the genus ''Genista'' (see Genisteae).
The species contain cytisine, a toxic alkaloid.
In the Spanish language the name "retama" is in common use for broom bushes in general, including but not limited to the genus ''Retama''.
== Systematics ==
The name ''Lygos'' was once used for ''Retama''.〔(James Cullen, Sabina G. Knees, ''The European Garden Flora Flowering Plants: Manual for the Identification of Plants Cultivated in Europe, Both Out-Of-Doors and Under Glass,'' Cambridge University Press, 2011, p. 410 ).〕〔(European Environment Agency, Thermo-mediterranean (''Lygos raetam'') brush )〕〔(Hanelt P. & Institute of Plant Genetics and Crop Plant Research (eds.), Mansfeld's Encyclopedia of Agricultural and Horticultural Crops, Springer Verlag, Germany, 2001, p. 924 )〕
Michel Adanson described and classified the genus referencing to the Greek plant “lygos” and to Pedanius Dioscorides.〔(Adanson M. (1763) Familles des Plantes, Paris, vol. 2, pp. 321, 573. ) Note: In p. 573 the name is printed as “Lugos”.〕
In ancient Greek language ''lygos'' (λύγος) was the name of the plant ''Vitex agnus-castus'' (chaste tree)〔(Henry George Liddell, Robert Scott, ''A Greek-English Lexicon'' )〕 or willow or other plants with pliant twigs.〔(Brown Roland Wilbur, ''Composition of scientific words: a manual of methods and a lexicon of materials for the practice of logotechnics'', Smithsonian Institution Press, 1979 p. 856. )〕 The same word (in some cases Latinized as ''Lygus'') was used in botany and zoology for various taxonomic groups as a component of names, e.g. ''Lygodysodea, Lygisyum, Lygistum, Lygodesmia'' etc.〔(George Don, A general history of the Dichlamydeous plants, London, 1834, vol. 3, p. 483, 560. )〕〔(Brown, p. 485 ): ''Lygus oblineatus'' (bug).〕
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