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Family Lamiaceae
Loktokong
Basilicum polystachyon (L.) Moench
MUSK BASIL

Xiao guan xun

Scientific names Common names
Basilicum polystachyon (L.) Moench Bauing (Mag.)
Lehmannia ocymoidea Jacq. ex Steud. Lodokong (Pang.)
Lumnitzera polystachyon (L.) J.Jacq. ex Spreng. Loktokong (Tag., Pamp.)
Moschosma dimidiatum (Schumach. & Thonn.) Benth. Pansi-pansi (Tag.)
Moschosma polystachyon (L.) Benth. Musk basil (Engl.)
Ocimum dimidiatum Schumach. & Thonn.  
Ocimum moschatum Salisb. [Illegitimate]  
Ocimum polystachyon L.  
Ocimum tashiroi Hayata  
Perxo polystachyon (L.) Raf.  
Plectranthus micranthus Spremg.  
Plectranthus parviflorus R. Br. [Illegitimate]  
Moschosma polystachyon (L.) Benth. is a synonym of Basilicum polystachyon (L.) Moench The Plant List
Basilicum polystachyon (L.) Moench is an accepted name The Plant List
Pansi-pansi is a shared common name for several species of plant: (1) Pansi-pansi (Leucas aspera), sula-sulasihan (2) Salita (Leucas lavandulifolia) (3) Gatas-gatas (Euphorbia hirta) (Bik.) (4) Botonesan (Hyptis capitata) (Bik.) (5) Loktokong (Moschosma polystachyum)(Tag.) (6) Suob-kabayo (Hyptis suaveolens), pansipansian (Tag.).

Other vernacular names
CHINESE: Xiao guan xun.
FRENCH: Basilic musque.
TAMIL: Canakkirai, Cittanantakkirai, Cittanantam, Karuppakkirai, Lolekam.
TELUGU: Kaachana, Kaashana .

Botany
Loktokong is an erect, much-branched, nearly smooth herb, 40 to 90 centimeters high. Stems are prominently 4-angled. Leaves are long-stalked, thin, ovate to oblong-ovate, 2 to 6 centimeters long, glandular and hairy on both upper and lower surfaces, with both ends pointed and with toothed margins. Flowers are lilac or pink, about 2.5 millimeters long, numerous, crowded, and borne in racemes 3 to 10 centimeters long and 5 to 6 millimeters in diameter. Calyx, in fruit, is spreading or somewhat reflexed, 3 to 3.5 millimeters long.

Distribution
- An introduced weed.
- In open, waste places, usually wet or damp soil, and widely scattered in settled areas in the Ilocos Norte, Pampanga, Rizal, Bataan, Laguna, and Quezon Provinces in Luzon; and in Mindanao (Cotobato).
- Also occurs in tropical Africa and Asia, through Malaya to tropical Australia.

Constituents
- Leaves and flowers yield an essential
an essential oil with main components of ethyl-eugenol (39%), methyl-isoeugenol (8%), limonene (7%), 1,8-cineole (eucalyptol, 5%), ß-elemene (5%), ß-caryophyllene (5%), ß-selinene (4%), citronellal (3.5%), geranyl acetate (2.9%), a-humulene (2.4%), isobornyl acetate (2%) and d-cadinene (2%).
- Yields alkaloids, phenols, flavonoids, triterpenes, coumarins, saponins, and sterols. (see study below) (11)

Properties
- Aromatic; belongs to the mint family, and closely allied to coleus and basil.
- Repellent, mosquitocidal.
- Studies have shown mosquitocidal, repellent, antimicrobial, anticonvulsant properties.

Caution
- Oral consumption of leaves as decoction or infusion reported to cause mouth ulcers.
- Eugenol is toxic in large amounts and can cause contact dermatitis.

Uses
Edibility
- Leaves used to flavor food.
- Leaves used as tea.
- Caution: Reported to cause oral ulcers.
Folkloric
- In Java, crushed leaves used as sedative; also, applied to sprains.
- Externally, decoction used as lotion.
- Decoctions used for epilepsy, heart palpitations, neuralgia and convulsions.
- Infusion of fruit taken for parturition in case of delayed birth. (Prosea) (10)
- Leaf sap squeezed into nostrils of children to induce sneezing to cure headaches. (Prosea) (10)
- In Cameroon, leaves used for infectious diseases and gastroenteritis.
Others
- Repellent: Burning of plant used to repel mosquitoes and snakes.


Studies
Mosquitocidal / Ovicidal:
Study of leaf extract against C quinquefasciatus showed 100% egg mortality at 100 ml/L. (1)
Mosquitocidal / Octasane Mosquitocidal compound, octasane, isolated from the leaves of M. polystachyum exhibited larvicidal activity with LC50 value of 7.2 mg/I against Culex quinquefasciatus. (2)
Volatile Oils / Repellency: Volatile oils from leaves of two plants – Moschosma polystachyum and Solanum xanthocarpum were effective as repellents with more than 300 minutes of protection against the bite of Cx quinquefasciatus. Both showed no adverse effects on human volunteers and can be applied as protection against mosquito bites. (3)
Antimicrobial: Phenolic extract of leaves was tested for in vitro antimicrobial activity against five bacteria (E Coli, P aeruginosa, S aureus, B subtilis, M luteus) and three fungi (F oxysporum, A niger, H oryzae). The antimicrobial activity might to attributed to high levels of polyphenolic compounds, caffeic acid, and rosmarinic acid. Results showed a promise for ethnopharmacological use as a broad-spectrum antimicrobial. (5)
Anticonvulsant: Alcohol and aqueous extracts of leaves showed significant antiepileptic activity in both MES-induced and PYTZ convulsion models. (7)
• Antibiotic Potentiation Against MDR Gram-Negative Bacteria: Study evaluated methanol extracts of four Cameroonian dietary plants for ability to improve activity of commonly used antibiotics against MDR Gram-negative bacteria expressing active efflux pumps. The MIC of the studied extracts ranged from 256-1024 µg/ml. Basilicum polystachyon recorded the lowest MIC value (256 µg/ml) against E. aerogenes and P. stuartii. The extracts showed synergistic effects (FIC≤0.5) against the studied bacteria, with an average 75.3% of tested antibiotics. (11)

Availability
Wild-crafted.

Last Update January 2017

IMAGE SOURCE: Leaves and Inflorescence / Basilicum polystchyon / © Australian Plant Image Index / M. Fagg / Medizinal-Pflanzen / 1897 / click on image to go to source page / Australian Tropical Rainforest Plants

Additional Sources and Suggested Readings
(1)
Ovicidal activity of Moschosma polystachyum Linn. (Lamiaceae) leaf extract against filarial vector Culex quinquefasciatus / Rajkumar S, Jebanesan A /Trop. Biomed. 21: 47-50, 2004
(2)
Mosquitocidal activities of octacosane from Moschosma polystachyum Linn / Rajkumar S, Jebanesan A. / Journal of Ethnopharmacology 90: 87-89, 2004
(3)
Repellency of volatile oils from Moschosma polystachyum and Solanum xanthocarpum against filarial vector Culex quinquefasciatus Say / Rajkumar S and Jebanesan A / Tropical Biomedicine 22(2): 139–142 (2005)
(4)
Basilicum polystachyon / Australian Tropical Rainforest Plants
(5)
Antimicrobial Activity of Leaf Extract of Basilicum polystachyon (L) Moench
/ D Chakraborty, K Gupta et al / Indian Journal of Experimental Biology, Vol 45, Aug 2007, Pp 744-748
(6)
Sorting Ocimum names / MULTILINGUAL MULTISCRIPT PLANT NAME DATABASE / 1995 - 2020 Michel H. Porcher
(7)
Anticonvulsant activity of Basilicum polystachyon leaves / Madhavan, V.; Prasad, M. R. R.; Anita Murali; Mythreyi, R.; Yoganarasimhan, S. N. / Indian Journal of Natural Products 2009 Vol. 25 No. 3 pp. 8-12
(8)
Basilicum polystachyon / Synonyms / The Plant List
(9)
Musk basil / Common names / Flowers of India
(10)
Basilicum polystachyon / Useful Tropical Plants
(11)
Antibiotic-potentiation activities of four Cameroonian dietary plants against multidrug-resistant Gram-negative bacteria expressing efflux pumps / Francesco K Touani, Armel J Seukep, Doriane E Djeussi, Aimé G Fankam, Jaurès A K Noumedem and Victor Kuete / BMC Complementary and Alternative Medicine,The official journal of the International Society for Complementary Medicine Research (ISCMR) 2014,14:258

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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