Aeschynomene aspera

Aeschynomene aspera is a species of flowering plant in the family Fabaceae. It is also known by the names sola (Odia ସୋଲ), shola (Bengali শোলা) sola pith plant, pith plant, laugauni (Hindi)[1] or Netti (Tamil).[2] Pith of low density from this plant is used to make hats known as pith helmets or sola topis.

Sola
Cross-section of A. aspera stem.
Bark: very thin, reddish brown layer around stem.
Wood: whitish, soft and lightweight.
Center: hollow pith tube, decayed with ageing.
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Fabales
Family:
Fabaceae
Genus:
Aeschynomene
Species:
A. aspera
Binomial name
Aeschynomene aspera
Synonyms
  • Aeschynomene lagenaria Lour.
  • Aeschynomene surattensis Wight & Arn.
  • Aeschynomene trachyloba Miq.
  • Hedysarum lagenarium (Lour.) Roxb.

It is native to Bangladesh, Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Pakistan, Sri Lanka, Thailand, and Vietnam.

It is an aquatic plant and is considered a minor weed of rice paddies across its range.[3]

Used part

From the biological viewpoint, the used part is the wood of the stem (often mistaken as pith, but it is not).[4]

Aeschynomene sp. woods is one of the lightest woods in the world.[5][6][7] Aeschynomene woods feel like a piece of thermocol or even lighter, and have a corky texture. It is bright white to off-white (white with a slight reddish or yellowish tinge) in color.

This corky material is used to make some traditional Indian crafts and artworks, and also decorative objects for worship, etc.

  • craftwork of shola
  • traditional ornaments of goddess-idol made with shola-base

See also

References
  1. "Indian Joint Vetch". Flowers of India. Retrieved 11 April 2015.
  2. Burnell, A.; Henry Yule (1996). A Glossary of Colloquial Anglo-Indian Words And Phrases: (Hobson-Jobson). Routledge. ISBN 9780700703210.
  3. Caton, B. P.; M. Mortimer; J. E. Hill (2004). A practical field guide to weeds of rice in Asia. International Rice Research Institute. pp. 12–13. ISBN 9789712201912.
  4. "Aeschynomene indica - Useful Tropical Plants".
  5. Mortensen, Andreas (2006-12-08). Concise Encyclopedia of Composite Materials. ISBN 9780080524627.
  6. "Aeschynomene indica - Useful Tropical Plants".
  7. "Is Balsa the lightest wood in the world?". 2013-09-13.
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