Medicago arborea L.

Moon trefoil (en), Luzerne en arbre (fr), Luzerne arborée (fr), Luzerne arborescente (fr)

Species

Angiosperms > Fabales > Fabaceae > Medicago

Characteristics

Erect, perennial shrub; stems densely sericeous. Lvs densely sericeous on petiole and undersurface of leaflets, almost glabrous above; petioles c. 5-25 mm long; leaflets obovate or obtriangular, acute or obtuse to slightly emarginate, usually mucronate, obtuse to cuneate at base, ± entire or irregularly serrate near apex, uniform in colour, c. 8-25 mm long; terminal petiolule (2)-3-6 mm long; lateral petiolules c. 1 mm long; stipules triangular, acuminate, entire. Infl. 4-10-(12)-flowered; peduncles densely sericeous, > petioles; pedicels > calyx tube. Calyx hairy; calyx teeth narrowly triangular, < or ± = tube. Corolla yellow to golden or orange, 10-15 mm long. Pod moderately hairy but becoming ± glabrous when mature, coiled in 1-11/2 turns with a hole through the centre, reticulately veined but otherwise smooth, 10-15 mm diam., few-seeded; seeds brown, c. 4-5 mm long.
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Shrubs, 1-2(-4) m, pale yellow sericeous; bark split longi­tudinally. Stems erect, terete. Stipules narrowly triangular, 5-8 mm, acute, entire; petioles 2-4 cm; leaflets obovate to obcor­date, 10-18 × 8-14 mm, sericeous abaxially, glabrous adaxially, lateral veins 5-7 pairs, base broadly cuneate, margin entire, apex obtuse or retuse. Flowers 6-10 scattered in racemes, 2-2.5 cm; peduncles axillary, 3-5 cm, densely silky; bracts ca. 2 mm; pedicels ca. 5 mm. Corolla orange, 12-15 mm. Ovary stipitate; ovules 12-15. Legume loosely coiled in 0.5-1.5 spirals, 12-15 mm in diam., center hollow, appressed pubescent, veins radially reticulate, netted in external circle. Seed reniform, ca. 4 mm. Fl. May.
An evergreen shrub. It grows 2-4 m high. The young stems are white and silky. The leaves have 3 leaflets. They are downy and greyish-green. The leaflets are oval and widest above the middle and narrow at the base. The flowers are pea-like and yellow. They are in round heads or 4-8 flowers. The fruit are spirally twisted seed pods. They are like snail shells. They are 12-15 mm long with a hole in the centre.
Life form perennial
Growth form shrub
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
Spread epizoochory
Mature width (meter) 2.0
Mature height (meter) 2.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer
Photosynthetic pathway c3

Environment

Scrub and rocky hillsides. Dry soils, rocky hillsides, steep cliffs and seashore rocks; frequently found at low elevations by the sea and on limestone soils, and often in areas disturbed by human activity; at elevations up to 800 metres.
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It is a warm temperate plant. It can be grown in coastal places. It grows in rocky places especially near cliffs. It suits hardiness zones 8-10.
Light 7-9
Soil humidity 1-6
Soil texture 1-6
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 7-10

Usage

Uses animal food environmental use experimental purposes fetish forage gene source material medicinal ornamental
Edible leaves shoots
Therapeutic use Tumor (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by cuttings or seedlings. Seeds needs soaking.
Mode cuttings seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -10
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Medicago arborea habit picture by Francois Mansour (cc-by-sa)
Medicago arborea habit picture by Diego Alex (cc-by-sa)
Medicago arborea habit picture by Ramon Martorell Martorell (cc-by-sa)

Leaf

Medicago arborea leaf picture by seo bur (cc-by-sa)
Medicago arborea leaf picture by Francois Mansour (cc-by-sa)
Medicago arborea leaf picture by Joel Lopez (cc-by-sa)

Flower

Medicago arborea flower picture by Roberto Dell'Orco (cc-by-sa)
Medicago arborea flower picture by Francois Mansour (cc-by-sa)
Medicago arborea flower picture by katia brakchi (cc-by-sa)

Fruit

Medicago arborea fruit picture by Francois Mansour (cc-by-sa)
Medicago arborea fruit picture by Morgan Le landais (cc-by-sa)
Medicago arborea fruit picture by Christophe Christophe (cc-by-sa)

Distribution

Medicago arborea world distribution map, present in Albania, Australia, Chile, China, Spain, Ethiopia, France, Greece, Italy, Jordan, Monaco, Malta, New Zealand, Portugal, and South Africa

Conservation status

Medicago arborea threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:506064-1
WFO ID wfo-0000213419
COL ID 3YNJ3
BDTFX ID 75239
INPN ID 107575
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Trigonella arborea Medicago arborea Rhodusia arborea Medica arborea

Lower taxons

Medicago arborea subsp. citrina Medicago arborea subsp. strasseri Medicago arborea subsp. arborea