Catalpa ovata

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Catalpa ovata
File:Catalpa ovata flowers.jpg
Flowers
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Lamiales
Family:
Bignoniaceae
Genus:
Catalpa
Species:
C. ovata
Binomial name
Catalpa ovata
Synonyms

Catalpa kaempferi Siebold & Zucc.[2][3][4]

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Catalpa ovata, the yellow catalpa[1][5] or Chinese catalpa[1] (Chinese: 梓; pinyin: zǐ), is a pod-bearing tree native to China. Compared to C. speciosa, it is much smaller, typically reaching heights between 20 and 30 feet. The inflorescences form 4–10-inch-long (100–250 mm) bunches of creamy white flowers with distinctly yellow tinging; individual flowers are about 1 inch wide. They bloom in July and August.[5] The leaves are very similar in shape to those of Paulownia tomentosa, having three lobes (two are abruptly truncated on either edge, with a third, central, slightly acute, pointed lobe forming the leaf apex), and are darkly green.[5][6] Fruits are very narrow, foot-long pods.[5]

Although native to the more temperate provinces within China (Anhui, Gansu, Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jilin, Liaoning, Nei Monggol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Xinjiang),[1] C. ovata is also cultivated in North America and Europe.[1][5] It is commonly used to make the undersides of qin.[7]

  • Catalpa ovata tree 1.jpg

    Tree in flower in cultivation at the Birmingham Botanical Gardens

  • CatalpaOvata.jpg

    Leaves and pods

  • Catalpa ovata.jpg

    Closeup of mature Catalpa ovata at sunset

Chemistry

The plant contains dehydro-alpha-lapachone[8] (DAL) which inhibits vessel regeneration, interferes with vessel anastomosis, and limits plexus formation in zebrafish.[9] DAL also controlled the development of the fungi rice blast, tomato late blight, wheat leaf rust, barley powdery mildew and red pepper anthracnose (Colletotrichum coccodes (Wallr) S Hughes). The chemical was particularly effective in suppressing anthracnose.[10]

Other

Referenced in the Zhuangzi.[11]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Gen. hist. 4:230. 1837 Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ 2.0 2.1 Gen. Hist. iv. 230. Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ Abh. Akad. Muench. iv. III. (1846) 142. Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ 5.0 5.1 5.2 5.3 5.4 Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Dehydro-alpha-lapachone
  9. ↑ Garkavtsev I, Chauhan VP, Wong HK, Mukhopadhyay A, Glicksman MA, Peterson RT, Jain RK.,"Dehydro-alpha-lapachone, a plant product with antivascular activity." Proc Natl Acad Sci U S A. 2011 Jul 12;108(28):11596-601
  10. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  11. ↑ http://ctext.org/dictionary.pl?if=en&id=2848

External links

Media related to Lua error in package.lua at line 80: module 'strict' not found. at Wikimedia Commons Data related to Catalpa ovata at Wikispecies


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