Salsola


Salsola is a genus of the subfamily Salsoloideae in the family Amaranthaceae. The genus sensu stricto is distributed in Australia, central and southwestern Asia, North Africa, and the Mediterranean. Common names of various members of this genus and related genera are saltwort and tumbleweed or roly-poly. The genus name Salsola is from the Latin salsus, meaning.

Description

The species of Salsola are mostly subshrubs, shrubs, small trees, and rarely annuals. The leaves are mostly alternate, rarely opposite, simple, and entire. The bisexual flowers have five tepals and five stamens. The pistil ends in two stigmata. The fruit is spherical with a spiral embryo and no perisperm.

Systematics

The genus name Salsola was first published in 1753 by Linnaeus in Species Plantarum. The type species is Salsola soda L.
The genus Salsola belongs to the tribe Salsoleae s.s. of the subfamily Salsoloideae in the family Amaranthaceae. The genus was recircumscribed in 2007 based on molecular phylogenetic research, greatly reducing the number of species. Synonyms of Salsola ''sensu stricto are: Darniella Maire & Weiller, Fadenia Aellen & Townsend, Neocaspia Tzvelev and Hypocylix Wol..
Plants of the World Online includes:
  1. Salsola acanthoclada
  2. Salsola africana
  3. Salsola algeriensis
  4. Salsola angusta
  5. Salsola australis
  6. Salsola austrotibetica
  7. Salsola baranovii
  8. Salsola basaltica
  9. Salsola brevifolia
  10. Salsola chellalensis
  11. Salsola chinghaiensis
  12. Salsola collina
  13. Salsola cruciata
  14. Salsola drummondii
  15. Salsola euryphylla
  16. Salsola glomerata
  17. Salsola × gobicola
  18. Salsola griffithii
  19. Salsola gypsacea
  20. Salsola halimocnemis
  21. Salsola hartmannii
  22. Salsola ikonnikovii
  23. Salsola intramongolica
  24. Salsola jacquemontii
  25. Salsola junatovii
  26. Salsola kali
  27. Salsola komarovii
  28. Salsola mairei
  29. Salsola masclansii
  30. Salsola melitensis
  31. Salsola monoptera
  32. Salsola papillosa
  33. Salsola paulsenii
  34. Salsola pontica
  35. Salsola praecox
  36. Salsola praemontana
  37. Salsola ryanii
  38. Salsola sabrinae
  39. Salsola sinkiangensis
  40. Salsola squarrosa
  41. Salsola strobilifera
  42. Salsola subglabra
  43. Salsola tamamschjanae
  44. Salsola tamariscina
  45. Salsola tragus
  46. Salsola tunetana
  47. Salsola turcica
  48. Salsola webbii
  49. Salsola zaidamica
  50. Salsola zygophylla
Excluded species: Many species formerly grouped in Salsola were excluded by Akhani et al.. Some may now be classified in separate genera:
  • Afrosalsola
  • *Afrosalsola deschaseauxiana
  • *Afrosalsola divaricata
  • Caroxylon
  • * Caroxylon imbricatum Moq.
  • * Caroxylon vermiculatum Akhani & Roalson
  • Kaviria
  • Turania
  • Xylosalsola
They are shrubby halophytic plants with opposite and alternate branches and leaves. They have a distinct leaf anatomy with a hypodermis and kranz-like cells that perform C2 photosynthesis, a C3-C4 intermediate photosynthetic pathway. The species were formerly included in the genus Salsola, which was found to be polyphyletic. In 2024 Hossein Akhani et al. described the new genus Afrosalsola'' to include the two species.

Uses

Salsola komarovii is collected in the wild and cultivated in Asia. In Namibia, where introduced Salsola species are called gannabos, they are valuable fodder plants.