Calligonum

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Calligonum
Scientific classification
Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Caryophyllales Family: Polygonaceae Subfamily: Polygonoideae Genus: Calligonum Linnaeus, 1753
Species
see text.

Calligonum is a genus of plants in the family Polygonaceae with about 80 species around the Mediterranean, Asia and in the North America.

[edit] Characteristics

Plants of the Calligonum genus are shrubs, diffusely but irregularly branched, with flexuous woody branches. Leaves are simple, opposite, nearly sessile, linear or scale-like, sometimes absent or very small, linear or filiform, distinct or united with short membranous ochreae. Flowers are bisexual, solitary or in loose axillary inflorescences. Flowers have persistent, 5-parted perianth not accrescent in fruit. Stamens 12-18, with filaments connate at base. Ovary is tetragonous.^[1][2]

[edit] Systematics

The species include:

• Calligonum aphyllum
• Calligonum arborescens
• Calligonum alaschanicum
• Calligonum calliphysa
• Calligonum caput-medusae
• Calligonum chinense
• Calligonum colubrinum
• Calligonum comosum
• Calligonum cordatum
• Calligonum crinitum
• Calligonum comosum
• Calligonum densum
• Calligonum ebinuricum
• Calligonum gobicum
• Calligonum jeminaicum
• Calligonum junceum
• Calligonum klementzii
• Calligonum korlaense
• Calligonum leucocladum
• Calligonum microcarpum
• Calligonum mongolicum
• Calligonum polygonoides
• Calligonum potanini
• Calligonum pumilum
• Calligonum roborowskii
• Calligonum rouqiangense
• Calligonum rubicundum
• Calligonum squarrosum
• Calligonum trifarium
• Calligonum yengisaricum
• Calligonum zaidamense

[edit] References