Neonauclea sessilifolia
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Neonauclea
Species:
N. sessilifolia
Binomial name
Neonauclea sessilifolia
Synonyms[1]
  • Adina sessilifolia (Roxb.) Hook.f. ex Brandis
  • Adina thanhoaensis N.N.Tran
  • Bancalus sericeus (Wall. ex G.Don) Kuntze
  • Nauclea dongnaiensis Pierre ex Pit.
  • Nauclea ovalifolia Roxb.
  • Nauclea sericea Wall. ex G.Don
  • Nauclea sessilifolia Roxb.
  • Nauclea vestita Zipp. ex Span.

Neonauclea sessilifolia is a tree species in the Rubiaceae family. It is found in Taiwan, and then from Yunnan, Zhōngguó/China, to Southeast Asia and northeastern India.

Description

The tree grows some 7 to 30m tall, with a dark gray, transversely fissured and cracked bark, the inner bark is brown and sometimes mottled.[2] The papery/thinly leather leaves are elliptic to elliptic-oblong or suborbicular in shape. The taxa is distinguished from other Neonauclea in China by having the following traits: the shape of the leaf blade, 6 to 9 pairs of secondary veins on the leaves with domatia in abaxial axils of the veins (occurring on the secondary, tertiary and even often on the quaternary veins); the corolla tuve is some 5-6mm. Flowers appear in October. The wood is whitish-grey,[3] with a specific gravity of 0.7 g/cm3.[4]

Distribution

The distribution of the species is slightly disjunctional, it grows in Taiwan, and then in a contiguous (clumped) area from Yunnan to Southeast Asia and northeastern India.[1] Countries and regions where the plant grows are: Taiwan; Zhōngguó/China (Yunnan); Vietnam; Laos; Cambodia; Thailand; Myanmar; Bangladesh; and India (Assam, Eastern Himalaya).

Habitat, ecology

In Yunnan it grows in thickets or in angiosperm forests on hills, at altitudes from 500 to 800m.[2] In Southeast Asia it grows in dense/closed and secondary forest.[3]

The Renikhayong para Village Community Forest, Bandarban District, southeastern Bangladesh, is quite diverse, in 40 acres, there are 81 species of tree, in 35 families.[5] Euphorbiaceae species are most frequent (11 sp.), Rubiaceae next with 7 species, including the not very frequent Neonauclea sessilifolia. The forest is used by the neighbouring village for food and other material gathering, including charcoal making. Even though material is extracted from the forest, the locally managed high diversity is important for natural ecosystem conservation.

Vernacular names

无柄新乌檀, wu bing xin wu tan (Standard Chinese);[2] ru'mliëy thôm (Khmer);[3] kam gaas (Chakma, Bangladesh);[6] kadam (Bandarban District, Bangladesh).[5]

Uses

The wood is not very durable, in Cambodia it used for temporary constructions and the twig are used as firewood.[3] The Chakma people living in the Hill Tracts region of southeastern Bangladesh, use the leaves in their indigenous medicine to treat skin infections (leaf paste applied twice daily).[6]

History

A prolific botanist, and very active academic, Elmer Drew Merrill first described the species in 1915, in his article "On the application of the generic name Nauclea of Linnaeus", published in the Journal of the Washington Academy of Sciences (Baltimore, MD).[7][8]

Further reading

  • Choudhary, R.K., Srivastava, R.C., Das, A.K. & Lee, J. (2012). Floristic diversity assessment and vegetation analysis of Upper Siang district of eastern Himalaya in North East India Korean Journal of Plant Taxonomy 42: 222–246.
  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1–216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Wu, Z., Raven, P.H. & Hong, D. (eds.) (2011). Flora of China 19: 1–884. Missouri Botanical Garden Press, St. Louis.

References

  1. 1 2 "Neonauclea sessilifolia (Roxb.) Merr". Plants of the World Online (POWO). Royal Botanic Gardens, Kew. Retrieved 3 February 2021.
  2. 1 2 3 Chen, Tao; Taylor, Charlotte M. "FOC: Family List: FOC Vol. 19: Rubiaceae: Neonauclea: 2. Neonauclea sessilifolia (Roxburgh) Merrill, J. Wash. Acad. Sci. 5: 542. 1915". Flora of China. eFloras.org. Retrieved 3 February 2021.
  3. 1 2 3 4 Pauline Dy Phon (2000). Plants Utilised In Cambodia/Plantes utilisées au Cambodge. Phnom Penh: Imprimerie Olympic. pp. 14, 15.
  4. ↑ "Neonauclea sessilifolia (Roxb.) Merr". EoL. Retrieved 3 February 2021.
  5. 1 2 Jannat, M.; Kamruzzaman, M.; Hossain, M. A.; Hossain, M. K. (2019). "Tree species diversity in the forest of Renikhayong para village in Bandarban, Bangladesh: A case study". J. Biodivers. Conserv. Bioresour. Manag. 5 (2): 115–126. doi:10.3329/jbcbm.v5i2.44922. Retrieved 3 February 2021.
  6. 1 2 Rahman, Mohammad Atiqur (2010). "Indigenous knowledge of herbal medicines in Bangladesh: 3. Treatment of Skin Diseases by Tribal Communities of the Hill Tracts Districts". Bangladesh J. Bot. 39 (2 (December)): 169–177. doi:10.3329/bjb.v39i2.7303. Retrieved 3 February 2021.
  7. ↑ "Neonauclea sessilifolia Merr., J. Wash. Acad. Sci. 1915, v. 542". International Plant Name Index (IPNI). The Royal Botanic Gardens, Kew. Retrieved 3 February 2021.
  8. ↑ Merrill, E.D. (1915). "On the application of the generic name Nauclea of Linnaeus" (PDF). Journal of the Washington Academy of Sciences. 5 (15 (Sep. 19)): 530–542. JSTOR 24521054. Retrieved 3 February 2021.
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