Tacca integrifolia

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White batflower
Tacca integrifolia2163256277.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Dioscoreales
Family: Dioscoreaceae
Genus: Tacca
Species:
T. integrifolia
Binomial name
Tacca integrifolia
Ker Gawl., 1812
Synonyms [1]
  • Ataccia aspera (Roxb.) Kunth
  • Ataccia cristata (Jack) Kunth
  • Ataccia integrifolia (Ker Gawl.) C.Presl
  • Ataccia laevis (Roxb.) Kunth
  • Ataccia lancifolia (Zoll. & Moritzi) Kunth
  • Tacca aspera Roxb.
  • Tacca choudhuriana Deb
  • Tacca cristata Jack
  • Tacca laevis Roxb.
  • Tacca lancifolia Zoll. & Moritzi
  • Tacca rafflesiana Jack ex Wall. [Invalid]
  • Tacca sumatrana H.Limpr.

Tacca integrifolia, also known as the white batflower or the black lily, [2] is a species of flowering plant in the family Dioscoreaceae. It is native to tropical and subtropical rainforests in hilly regions of South Asia, including Pakistan, Bangladesh, Indochina, the Malay Peninsula, Sumatra, Java and eastern China. [3] :389 [4]

Habitat

It grows in the understorey of humid primary and secondary rainforests. [5] [3] :391 The substrates it grows in are rocky soil and sandy soil underneath leaf litter. [3] :391

Description

Tacca integrifolia is a herb growing from a thick, cylindrical rhizome as long as 12 cm (5 in) and a diameter of 3 cm (1 in). Its oblong-elliptical or lanceolate leaf blades are borne on long stems, some 50 by 20 cm (20 by 8 in) including the petioles, with tapering bases and slender pointed tips. White batflowers that grow in hilly areas are larger in size than batflowers that grow elsewhere. [4] [6] [2] [3] :390,391

Umbels

The flower scape is about 55 cm (22 in) long and is topped with a pair of involucral bracts, broad and erect, white with mauve venation. Among the individual nodding flowers, which are arranged in an umbel, are further long, filiform (thread-like) bracts. The perianth of each flower is tubular and purplish-black, 1 to 2 cm (0.4 to 0.8 in) long, with two whorls of three perianth lobes, the outer three narrowly oblong 12–15 cm (5–6 in) long and the inner three broadly obovate. [4] [2]

The fruits are fleshy berries some 2 cm (0.8 in) long, and the seeds, which have six longitudinal ridges, have the remains of the perianth lobes still attached. [4]

Ecology

The stamens are attached to the tube of the perianth in a helmet-like manner and, with the flat-topped stigma lobes, may form an insect trap; a sweet musky odour has been detected from these flowers and this may attract flies as pollinators. After pollination, the scape bends over and the developing fruits rest on the ground. The fleshy fruits are a dull colour with soft jelly-like pulp, and it is possible that the seeds are dispersed by rodents and other small mammals as they feed on the fruits. [6]

Use

In the Malay Peninsula, its leaves are dried to make cigarette wrappers. [3] :391

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References

  1. "Tacca integrifolia Ker Gawl". World Flora Online. World Flora Consortium. 2023. Retrieved 15 March 2023.
  2. 1 2 3 Hsuan Keng; See Chung Chin; Hugh T. W. Tan (1994). The Concise Flora of Singapore. Vol. II: Monocotyledons. Singapore: Singapore University Press. p. 15-16. ISBN   9971-69-207-4.
  3. 1 2 3 4 5 Drenth, E. (1972). "A revision of the family Taccaceae". Blumea. 20 (2): 367–406 via Naturalis Institutional Repository.
  4. 1 2 3 4 Wiart, Christophe (2006). Medicinal Plants of the Asia-Pacific: Drugs for the Future?. World Scientific. pp. 688–689. ISBN   978-981-4480-33-8.
  5. "Tacca integrifolia". Plants Rescue. Retrieved 18 March 2017.
  6. 1 2 Klaus Kubitzki (2013). Flowering Plants. Monocotyledons: Lilianae (except Orchidaceae). Springer Science & Business Media. pp. 425–427. ISBN   978-3-662-03533-7.