Calligonum

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

Calligonum
Calligonum polygonoides
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Polygonaceae
Subfamily:	Polygonoideae
Genus:	Calligonum L.
Species
See text

Description

Plants of the genus Calligonum 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 perianths not accrescent in fruit, and 10-18 stamens with filaments connate at the base. The ovary is tetragonous.^[1][2]

Taxonomy

The genus Calligonum was first published by Carl Linnaeus in 1753.^[3] It is placed in the subfamily Polygonoideae, tribe Calligoneae, along with its sister genus, Pteropyrum.^[4]

Species

• Calligonum acanthopterum I.G.Borshch.
• Calligonum alatosetosum Maassoumi & Kazempour
• Calligonum aphyllum (Pall.) Gürke
• Calligonum arborescens Litv.
• Calligonum azel Maire
• Calligonum babakianum Godw.
• Calligonum bakuense Litv.
• Calligonum bucocladum Bunge
• Calligonum bykovii Godw.
• Calligonum calvescens Maire
• Calligonum caput-medusae Schrenk
• Calligonum crinitum Boiss.
• Calligonum crispum Bunge
• Calligonum cristatum Bunge
• Calligonum ebinuricum N.A.Ivanova ex Soskov
• Calligonum eriopodum Bunge
• Calligonum junceum (Fisch. & C.A.Mey.) Litv.
• Calligonum klementzii Losinsk.
• Calligonum laristanicum Rech.f. & Schiman-Czeika
• Calligonum leucocladum (Schrenk) Bunge
• Calligonum litwinowii Drobow
• Calligonum macrocarpum I.G.Borshch.
• Calligonum matteianum Drobow
• Calligonum mejidum Al-Khayat
• Calligonum microcarpum I.G.Borshch.
• Calligonum mongolicum Turcz.
• Calligonum murex Bunge
• Calligonum polygonoides L.
• Calligonum rubicundum Bunge
• Calligonum santoanum Korovin
• Calligonum schizopterum Rech.f. & Schiman-Czeika
• Calligonum setosum (Litv.) Litv.
• Calligonum spinosetosum Maassoumi & Batooli
• Calligonum taklimakanense B.R.Pan & K.M.Shen
• Calligonum tetrapterum Jaub. & Spach
• Calligonum trifarium Z.M.Mao
• Calligonum triste Litv.
• Calligonum turbineum Pavlov