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Species of flowering plant in the family Fabaceae From Wikipedia, the free encyclopedia
Medicago arborea is a flowering plant species in the pea and bean family Fabaceae. Common names include moon trefoil, shrub medick, alfalfa arborea, and tree medick. It is native to several Mediterranean Basin countries – Spain and the Balearic Islands, Italy including and Sardinia and Sicily, Greece including Crete and the East Aegean Islands, and Turkey.[1] It primarily grows on rocky shores among shrubby vegetation. It forms a symbiotic relationship with the bacterium Sinorhizobium meliloti, which is capable of nitrogen fixation. It is the only member of the genus Medicago which is used as an ornamental. M. arborea is sometimes misidentified as Cytisus, which it resembles.[2]
| Medicago arborea | |
|---|---|
| |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Medicago |
| Species: | M. arborea |
| Binomial name | |
| Medicago arborea L. (1753) | |
| Subspecies[1] | |
|
3; see text | |
| Synonyms[1] | |
| |
The shrub is 1–4 metres (3 ft 3 in – 13 ft 1 in) high and wide and is pale yellow in colour. Its stems are erect and terete while its stipules are triangular and are 5–8 millimetres (0.20–0.31 in) in height. Its petioles are 2–4 centimetres (0.79–1.57 in) long with obovate to obcordate leaflets. Flowers are scattered 6-10 racemes and are 2–2.5 centimetres (0.79–0.98 in) long with axillar peduncles which are 3–5 centimetres (1.2–2.0 in). The corolla is of orange colour and is 12–15 millimetres (0.47–0.59 in). Bracts are 2 millimetres (0.079 in) long while its pedicels are 5 millimetres (0.20 in) long. Its legume is coiled in 0.5 to 1.5 spirals which are 12–15 millimetres (0.47–0.59 in) wide and are pubescent at the center. The seeds are 4 millimetres (0.16 in) long.[3]
Three subspecies are accepted.[1]
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