Calligonum
# Calligonum

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

## 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.

## Taxonomy

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

### 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
