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Family Cucurbitaceae
Patolang-gubat
Trichosanthes quinquangulata A. Gray

Wu jiao gua lou

Scientific names Common names
Trichosanthes quinquangulata A. Gray Kabalonga (Tag.)
  Katimbau (Ilk.)
  Kalanum-uak (Bis.)
  Kaulalagda (Bag.)
  Lima (Ig.)
  Patolang-gubat (Tag.)
  Patolasi-gayang (Gad.)
  Tabau-tabau (Ilk., Pang.)
  Tabugok (Tag.)
  Tabuyoc (Tadyawan, Tag.)
  Tambanding (Ig.)
  Tibabayang (Sul)
  Tibubukan-uak (Sul.)
Trichosanthes quinquangulata A. Gray is an accepted name with no recorded synonym. The Plant List

Other vernacular names
CHINESE: Wu jiao gua lou, Wu jiao ye gua lou, Lan yu kuo lou (Taiwan).
INDONESIAN: Kalayar.
THAI: Buap liam.

Etymology
Trichosanthes quinquangulata derives from the Greek words 'trichos' meaning hairy and 'anthos' meaning flowers. Quinquangulata means "five-angled" referring to the 5-pointed lobes of the leaves. (4)

Botany
Patolang-gubat is a coarse, smooth vine with angled or grooved stems. Leaves are somewhat rounded in outline, 10 to 20 centimeters long, heart-shaped at the base, 5- or 7-angled or lobed. Male racemes have long peduncles with many flowers, with large bracts, one or two are open at a time. Flowers are white and large. Calyx-lobes are 2 to 2.5 centimeters long and irregularly toothed. Fruit is rounded, 10 centimeters across, smooth, red or crimson.

Distribution
- Found in thickets and old clearings, at low and medium ascending to 1,500 meters, in the Babuyan Islands; in Cagayan, Benguet, Bontoc, Nueva Viscaya, Pangasinan, Zambales, Bulacan, Bataan, Rizal and Laguna Provinces in Luzon; in Masbate, Panay, Mangsi; and in Mindanao.
- Widely distributed from Indo-China throughout Malaysia.
- Reported in Java, Sumatra, Borneo, Laos, Vietnam, Thailand.

Constituents
• Seed yields trichosanthin, a ribosome-inhibiting protein and trichomislin, which induces apoptosis. source

Properties
• Considered febrifuge.
• Seeds considered abortifacient.

Parts used
Seeds, fruits.

Uses
Folkloric
• Mature seeds are finely powdered and cooked with coconut oil and applied externally to itchy skin lesions.
• Powdered seeds mixed with wine and drank for stomach aches.

• The Mangyans of Mindoro squeeze the ripe fruits in water and drunk as tea for fever and malaria. (3)
• Seeds reportedly used as abortifacient.

Studies
Trichosanthin / Trichomislin:
Trichosanthin is a ribosome-inactivating protein from the root tuber of Chinese medicinal herb, Trichosanthes kirilowi Maxim. Its various pharmacological attributions included anti-HIV, anti-tumor, and abortifacient properties. Trichomislin has been shown to induce apoptosis. (4) (5) (This study and many others are attributed to T. kirilowii. I have yet to find studies done on T. quinquangulata. G.Stuart)

Availability
- Wildcrafted

Updated April 2018 / September 2016

Photos © Godofredo Stuart / StuartXchange

Additional Sources and Suggested Readings
(1)
Species Diversity of Trichosanthes in Gunung Halimun National Park / Rugayah /
Edisi Khusus 'B:'odh/ersitas -Tamar: Nasional Gunung Halimun” Berita Biologi, Volume 5, Nomor 6, Desember 2001
(2)
Sorting Trichosanthes names / /Maintained by: Michel H. Porcher / MULTILINGUAL MULTISCRIPT PLANT NAME DATABASE / Copyright © 1995 - 2020 / A Work in Progress. School of Agriculture and Food Systems. Faculty of Land & Food Resources. The University of Melbourne. Australia.
(3)
Ethnopharmacologic Documentation of Selected Philippine Ethnolinguistic Groups: The Mangyan (Tadyawan) People of Mindoro Island / Prof Rosario R Rubite, Dr Isidro C Sia, Leonardo Co, Larry Ylagan / 2002
(4)
Trichosanthes quinquangulata / Cristopher Wiart / Medicinal Plants of the Pacific
(5)
Recent advances in trichosanthin, a ribosome-inactivating protein with multiple pharmacological properties. / Shaw PC, Lee KM, Wong KB / Toxicon, 2005 May;45(6):683-9.

It is not uncommon for links on studies/sources to change. Copying and pasting the information on the search window or using the DOI (if available) will often redirect to the new link page.

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