Gen info
- Cleidion is a plant genus of the family Euphorbiaceae. It was first described by Blume in 1826.

Botany
• Saligao is a large shrub or tree. Bark Is smooth to slightly fissured. Leaves are alternate or subopposite, oblong, about 12 centimeters long, and 5 centimeters wide. Flowers are solitary or few in a cluster, borne on the axils of the leaves. Fruit is somewhat rounded, about 3 centimeters in diameter.

• Shrub to tree up to 20 m high, dbh up to 50 cm. Bark thin, smooth to finely roughened, brown to gray. Stipules triangular, 1.8–2 by 0.8–1.5 mm. Leaves: petiole 2–8 cm long; blade 8.6–27 by 2.4–10 cm, length/width ratio 1.8–4, papery, dark green above, light green underneath, base often slightly oblique, narrowly rounded to cuneate; nerves 8 or 9 per side. Staminate inflorescences up to 23.5 cm long, erect, green. Staminate flowers 6–7 mm in diam., greenish (white) to yellowish; pedicel 1–4 mm long; sepals ovate, 2–3.3 by 1.8–2.8 mm, subglabrous outside; stamens ca 0.3 by 0.3 mm, cream, filaments 0.6–1.2 mm long, pale light green. Pistillate flowers 5–6 mm in diam., green; pedicel 3–9 cm long; sepals 5, ovate, 1.6–1.8 by 1.5–1.6 mm, margin somewhat fimbriate; ovary 2-locular, 5–6 by 3.5–5.2 mm high; style 3.5–15 mm long, greenish; stigmas 2,8–14 mm long, greenish. Fruits 1.8–2 (when 1 lobe developed) to 2.2–2.8 (when 2 lobes developed) by 1.4–1.6 cm, glabrous, yellow to brown. Seeds 12–13 by 10.5–11 mm, endosperm white. (Flora of Thailand) (11)

Distribution
- Native to the Philippines.
- In forests at low and medium altitudes in most or all provinces from northern Luzon to Palawan and Mindanao.
- Also native to Andaman Is., Assam, Bangladesh, Bismarck Archipelago, Borneo, Cambodia, China South-Central, East Himalaya, India, Jawa, Lesser Sunda Is., Malaya, Myanmar, Nepal, New Guinea, Queensland, Solomon Is., Sri Lanka, Sulawesi, Sumatera, Thailand, Tibet, Vanuatu, Vietnam. (6)

Constituents
- Essential oil of leaves yielded 10 constituents accounting for 92.60% of the total oil. Major constituents were ethyl linoleolate (32.12 %), hexadecanoic acid (26.77 %), trans-phytol (24.64 %) and iso- phytol (4.80 %). (See studies below) (4)
- Study of leaves of Cleidion spiciflorum isolated two flavone glycosides, acacetin-7-O-b-D-glucopyranoside (tilianin) and diosmetin-7-O-b-D-glucopyranoside, a lanostane triterpene, (24S)-24-methyl-5a-lanosta-9(11),25-dien-3b-ol, a diterpene, trans-phytol, and a phenylpropanoid glycoside, p-propenylphenol-b-D-glucopyranoside. (8)
- Study of roots of Cleidion spiciflorum yielded a new clerodane diterpene, spiciflorin (1), a known clerodane columbin (2), along with 3, 3' 4-O-trimethyl ellagic acid (3), scopoletin (4), trans-4-propenylphenol glycoside (5), 5-hydroxymethylfurfural (6). (9)

Properties
- Plant reported to be poisonous.
- Considered abortifacient, analgesic, antipyretic, diaphoretic, stomachic.
- Studies have suggested antioxidant, anticancer, antibacterial properties.

Parts used
Bark, seeds, leaves.

Uses
Edibility
- No report found on edibility of this particular Cleidion species.
Folkloric
- Decoction of leaves reported to induce abortion.
- Stems used as analgesic, antipyretic, and diaphoretic.
- Decoction of bark, taken internally, used as stomachic.
- Seeds reported to be effective for constipation.
- Leaf infusion applied on sore eyes.
- In the Solomon Islands, bark decoction used to bathe babies afflicted with scabies. Seeds are chewed with betel nut (Areca catechu) to relieve colds. (7)
Others
- Wood: Used as house posts.

Studies
• Phytochemicals: Study of the leaves isolated two flavone glycosides, acacetin-7-O-b-D-glucopyranoside and diosmetin-7-O-b-D-glucopyranoside, a phenylpropanoid glycoside, plus p-propenylphenol-b-D-glucopyranoside, a linear diterpene, trans-phytol, and a lanostane triterpene, (24S)-24-methyl-5a-lanosta-9(11),25-dien-3b-ol. (1)
• Clerodane: Study isolated a polyoxygenated clerodane, spiciflorin, and also a glucoside of anol (2), columbin, scopoletin, 3,3',4-O-trimethylellagic acid, acetylaleuritolic acid, common triterpenes and phenols. (2)
• Antioxidant / Antibacterial / Anticancer / Leaf Essential Oil: Essential oil from leaves yielded ten constituents accounting for 92.6% of the total oil. The oil showed non-cytotoxic effects against Vero cells. It exhibited anti-cancer activity against three human cancer cell lines (KB-oral cavity cancer, MCF7-Breast Cancer, and NCI-H187-Small Cell Lung Cancer. It showed antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa. It also exhibited significant antioxidant activity. (see constituents above) (4)
• Antioxidant / Anticancer / Leaves and Fruits: Study evaluated the antioxidant and anticancer activities of various extracts of leaves, stems, and fruits of Cleidion javanicum and Bridelia retusa. Methanol leaves extract of C. javanicum leaves showed high antioxidant activity. Hexane extract of fruits from C. javanicum showed significant anticancer activity against NCI-H 187-small cell lung cancer with IC50 of 29.11 µg/ml. All of the extracts of the two medicinal plants were non-cytotoxic to primate cell line (Vero cell). The methanol extract of C. javanicum leaves contained maximum flavonoid. (10)

Availability
Wild-crafted.

Additional Sources and Suggested Readings
(1)
Chemical Constituents of Cleidion spiciflorum Leaves / Supotchana Menkham and Rutt Suttisri / The Thai Journal of Pharmaceutical Sciences, Volume 27, Numbers 1-2, January - June 2003, Page 33-39
(2)
Clerodanes and other constituents of Cleidion spiciflorum / Waree Naengchomnong, Paulo M Pinho et al / Phytochemistry. 2006 May 19;: 16716368
(3)
Cleidion javanicum Blume (accepted name) / Chinese names / Catalogue of Life, China
(4)
Chemical composition and biological activities of the essential oil from leaves of Cleidion javanicum Bl /
Sanseera, D., Niwatananun, W., Liawruangrath, B., Liawruangrath, S., Baramee, A. & Pyne, S. G. / Journal of Essential Oil-Bearing Plants, 2012; 15 (2): pp 186-194 /
DOI: 10.1080/0972060X.2012.10644035
(5)
Revision of the genus Cleidion (Euphorbiaceae) in Malesia / Kulju, Kristo K.M.; Van Welzen, Peter C. / Blumea - Biodiversity, Evolution and Biogeography of Plants, Volume 50, Number 1, April 2005 , pp. 197-219(23)
(6)
Cleidion javanicum / Synonyms / KEW: Plants of the World Online
(7)
Cleidion spiciflorum / PROSEA (Plant Resources of South-East Asia)
(8)
Phytochemical study of Cleidion spiciflorum (Burm. f.) Merr. leaves / Supotchana Menkham / Thesis: 2001 / Pharmaceutical Biology/ Chulalongkorn University
(9)
Spiciflorin: a novel clerodane from Cleidion spiciflorum (Euphorbiaceae) / A Kijjoa, W Naengchomnong, W Herz / Planta Med 2007; 73 / DOI: 10.1055/s-2007-987108
(10)
Determination of antioxidant and anticancer activities together with total phenol and flavonoid contents of Cleidon javanicum Bl. and Bridelia retusa (L.) A.Juss / Duangsuree Sanseera, Boonsom Liawruangrath, Stephen G Pyne, Saisunee Liawruangrath / Chiang Mai Journal of Science, 43(3): pp 534-545 / RIS ID 106444
(11)
Cleidion javanicum / WFO: The World Flora Online

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