Ocimum americanumL.

American basilhoary basillime basil

WFO wfo-0000253211 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Ocimum americanum, photographed by Matthew Fainman
fig. a Matthew Fainman, CC BY 4.0 / 2021-08-06 / obs. 148997789

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

The specimen a real sheet, in a real collection

Herbarium
The New York Botanical Garden
Accession
00870326
Filed as
Ocimum americanum L.
Det. by
R. M. Harley 2006-01-01
Collected
L. Buscalioni 1899-07-24
Origin
BR
The sheet
View the digitised specimen (CC BY 4.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. The holding institution does not serve this sheet’s image to third parties, so there is no photograph here. The record is real and the link goes to it. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all herbarium sheets never recorded a determiner, which is ordinary.

Native range 67 botanical countries

Regions where Ocimum americanum is native: Angola, Benin, Botswana, Burkina, Cameroon, Cape Provinces, Cape Verde, Caprivi Strip, Central African Republic, Chad, Comoros, Congo, Djibouti, DR Congo, Eritrea, Eswatini, Ethiopia, Free State, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Gulf of Guinea Is., Ivory Coast, Kenya, KwaZulu-Natal, Lesotho, Liberia, Madagascar, Malawi, Mali, Mauritania, Mozambique, Namibia, Niger, Nigeria, Northern Provinces, Senegal, Sierra Leone, Somalia, Sudan-South Sudan, Tanzania, Togo, Uganda, Zambia, Zimbabwe, China South-Central, Andaman Is., Assam, Bangladesh, Bismarck Archipelago, India, Jawa, Lesser Sunda Is., Myanmar, Nepal, New Guinea, Nicobar Is., Philippines, Sri Lanka, Sulawesi, Sumatera, Thailand, Vietnam, West Himalaya, Queensland AngolaBeninBotswanaBurkinaCameroonCape ProvincesCaprivi StripCentral African RepublicChadCongoDjiboutiDR CongoEritreaEswatiniEthiopiaFree StateGabonGambiaGhanaGuineaGuinea-BissauGulf of Guinea Is.Ivory CoastKenyaKwaZulu-NatalLesothoLiberiaMadagascarMalawiMaliMauritaniaMozambiqueNamibiaNigerNigeriaNorthern ProvincesSenegalSierra LeoneSomaliaSudan-South SudanTanzaniaTogoUgandaZambiaZimbabweChina South-CentralAssamBangladeshBismarck ArchipelagoIndiaJawaLesser Sunda Is.MyanmarNepalNew GuineaPhilippinesSri LankaSulawesiSumateraThailandVietnamWest HimalayaQueensland Cape VerdeComorosAndaman Is.Nicobar Is.
Native distribution of Ocimum americanum, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Angola ANG AFRICA
Benin BEN
Botswana BOT
Burkina BKN
Cameroon CMN
Cape Provinces CPP
Cape Verde CVI
Caprivi Strip CPV
Central African Republic CAF
Chad CHA
Comoros COM
Congo CON
Djibouti DJI
DR Congo ZAI
Eritrea ERI
Eswatini SWZ
Ethiopia ETH
Free State OFS
Gabon GAB
Gambia GAM
Ghana GHA
Guinea GUI
Guinea-Bissau GNB
Gulf of Guinea Is. GGI
Ivory Coast IVO
Kenya KEN
KwaZulu-Natal NAT
Lesotho LES
Liberia LBR
Madagascar MDG
Malawi MLW
Mali MLI
Mauritania MTN
Mozambique MOZ
Namibia NAM
Niger NGR
Nigeria NGA
Northern Provinces TVL
Senegal SEN
Sierra Leone SIE
Somalia SOM
Sudan-South Sudan SUD
Tanzania TAN
Togo TOG
Uganda UGA
Zambia ZAM
Zimbabwe ZIM
Andaman Is. AND ASIA-TROPICAL
Assam ASS
Bangladesh BAN
Bismarck Archipelago BIS
India IND
Jawa JAW
Lesser Sunda Is. LSI
Myanmar MYA
Nepal NEP
New Guinea NWG
Nicobar Is. NCB
Philippines PHI
Sri Lanka SRL
Sulawesi SUL
Sumatera SUM
Thailand THA
Vietnam VIE
West Himalaya WHM
China South-Central CHC ASIA-TEMPERATE
Queensland QLD AUSTRALASIA

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Where it actually grows measured, from 366 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 4.8 °C 8.8 °C 18.1 °C
Warmest month, mean daily high 27.4 °C 30.6 °C 36.6 °C
Annual rainfall 198 mm 580 mm 1,075 mm
Rainfall in the driest quarter 1 mm 13 mm 72 mm

It is barely found anywhere that freezes. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 366 research-grade observations of Ocimum americanum that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Also published as 14 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Becium obovatum var. glabrior (Benth.) Cufod.
  • Ocimum album Roxb.
  • Ocimum brachiatum Blume
  • Ocimum canum Sims
  • Ocimum canum var. integrifolium Engl.
  • Ocimum dichotomum Hochst. ex Benth.
  • Ocimum dinteri Briq.
  • Ocimum fluminense Vell.
  • Ocimum fruticulosum Burch.
  • Ocimum hispidulum Schumach. & Thonn.
  • Ocimum incanescens Mart.
  • Ocimum serpyllifolium var. glabrius Benth.
  • Ocimum stamineum Sims
  • Ocimum thymoides Baker

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.