Coix lacryma-jobi L.

First published in Sp. Pl.: 972 (1753)
This species is accepted
The native range of this species is Indian Subcontinent to Taiwan and Peninsula Malaysia. It is an annual or perennial and grows primarily in the wet tropical biome. It is used as animal food, a medicine and invertebrate food, has environmental uses and social uses and for food.

Descriptions

Gramineae, W. D. Clayton, S. M. Phillips & S. A. Renvoize. Flora of Tropical East Africa. 1974

Morphology General Habit
Coarse annual; culms 1–3 m. high.
Morphology Leaves
Leaf-blades linear-lanceolate, 10–45 cm. long, 2–7 cm. wide, cordate at the base.
Morphology Reproductive morphology Flowers Receptacle
Cupule 5–15 mm. long, typically globose-ovoid, bony, shining, white or bluish.
Morphology Reproductive morphology Inflorescences
Male raceme 3–5 cm. long, the spikelets 7–8 mm. long.
sex Male
Male raceme 3–5 cm. long, the spikelets 7–8 mm. long.
Figures
Fig. 205.
Habitat
Stream sides and swampy places; occasionally cultivated as a source of beads; 0–2000 m.
Distribution
K4 K7 T2 T3 T6 T8 U2 U4 Z an Asiatic species, now distributed throughout the tropics
[FTEA]

Distribution
Biogeografic region: Amazonia, Andean, Guiana Shield, Caribbean, Orinoquia, Pacific. Elevation range: 0–2000 m a.s.l. Naturalised in Colombia. Colombian departments: Amazonas, Antioquia, Arauca, Caquetá, Cauca, Cesar, Chocó, Cundinamarca, Guainía, Guaviare, Huila, La Guajira, Meta, Nariño, Putumayo, Risaralda, Tolima, Valle del Cauca, Vaupés.
Habit
Herb.
Ecology
Habitat according IUCN Habitats Classification: forest and woodland, savanna, shrubland, desert, artificial - terrestrial.
Vernacular
Cuenta de milagro, Lágrimas de san pedro, Sukumusha
[UPFC]

Gramineae, W. D. Clayton. Flora of West Tropical Africa 3:2. 1972

Note
“job’s Tears”
Ecology
Stream banks and moist places.
[FWTA]

Morphology General Habit
Annual. Culms 90-250 cm long. Leaves cauline. Ligule an eciliate membrane. Leaf-blade base cordate. Leaf-blades linear, or lanceolate; 10-50 cm long; 25-50 mm wide.
Morphology Reproductive morphology Inflorescences
Monoecious; with a male and a female inflorescence subtended by the same spatheole. Synflorescence compound; paniculate; prophyllate below lateral spikelets (female inflorescence). Inflorescence composed of racemes; axillary; deciduous as a whole; subtended by a spatheole; exserted (male), or enclosed (female). Spatheole ovate, or globose; 0.8-1.1 cm long; indurate. Peduncle nodding; widened at apex; disarticulating; disarticulating below uppermost sheaths. Racemes 1; single; bearing a triad of spikelets. Rhachis obsolete. Spikelets in threes. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2 in the cluster. Male spikelets 2 in a cluster. Pedicels linear; 1 length of fertile spikelet. Male inflorescence unlike female; a single raceme (1.5-3 cm,exserted). Male spikelets distinct from female; 2 flowered; 8-10 mm long. Male spikelet glumes 2; wingless; muticous. Male spikelet lemma 3-5 -veined; muticous.
Sterile
Companion sterile spikelets represented by barren pedicels.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 7-9 mm long; falling entire; deciduous with accessory branch structures. Companion sterile spikelets represented by barren pedicels.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 7-9 mm long; falling entire; deciduous with accessory branch structures.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; similar to fertile lemma in texture. Lower glume orbicular; 7-9 mm long; 1 length of spikelet; membranous; firmer above; without keels. Lower glume apex cuspidate. Upper glume ovate; membranous; firmer above; with hyaline margins; 1-keeled; 11 -veined. Upper glume primary vein grooved on either side. Upper glume apex cuspidate.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret ovate; 1 length of spikelet; membranous; firmer above; 7 -veined; cuspidate. Fertile florets female. Fertile lemma ovate; 6-7.6 mm long; membranous; firmer above; keeled; 3-5 -veined. Lemma surface with 2 longitudinal grooves. Lemma apex rostrate. Palea hyaline; 2 -veined; without keels.
Morphology Reproductive morphology Flowers
Lodicules absent (female), or 2 (male); cuneate; fleshy. Anthers 3. Stigmas 2; terminally exserted; papillose. Styles connate below.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; orbicular. Embryo 1 length of caryopsis. Disseminule comprising a inflorescence.
sex Male
Male inflorescence unlike female; a single raceme (1.5-3 cm,exserted). Male spikelets distinct from female; 2 flowered; 8-10 mm long. Male spikelet glumes 2; wingless; muticous. Male spikelet lemma 3-5 -veined; muticous.
Distribution
Europe: southwestern and southeastern. Africa: north, Macaronesia, west tropical, west-central tropical, northeast tropical, east tropical, southern tropical, south, middle Atlantic ocean, and western Indian ocean. Asia-temperate: Soviet Middle Asia, western Asia, China, and eastern Asia. Asia-tropical: India, Indo-China, Malesia, and Papuasia. Australasia: Australia. Pacific: southwestern, south-central, northwestern, and north-central. North America: southeast USA and Mexico. South America: Mesoamericana, Caribbean, northern South America, western South America, Brazil, and southern South America.
Reference
Andropogoneae. FTA.
Diagnostic
Male raceme erect; spatheole bladeless.
[GB]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Bernal, R., G. Galeano, A. Rodríguez, H. Sarmiento y M. Gutiérrez. 2017. Nombres Comunes de las Plantas de Colombia. http://www.biovirtual.unal.edu.co/nombrescomunes/

Vernacular
camándula, cuentas de milagro, lágrimas de Job, lágrimas de San Pedro, milagro, moisés, ojo de Dios, sampedrito, sorgo, trigo, trigo amazónico, trigo brasilero, trigo peruano, yerba de milagro
[UNAL]

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Distribution
Naturalizada en Colombia; Alt. 0 - 2000 m.; Amazonia, Andes, Guayana y Serranía de La Macarena, Llanura del Caribe, Orinoquia, Pacífico, Sierra Nevada de Santa Marta, Valle del Cauca, Valle del Magdalena.
Morphology General Habit
Hierba
Conservation
Preocupación Menor
[CPLC]

Uses

Use Animal Food
Used as animal food.
Use Environmental
Environmental uses.
Use Gene Sources
Used as gene sources.
Use Food
Used for food.
Use Invertebrate Food
Used as invertebrate food.
Use Materials
Used as material.
Use Medicines
Medical uses.
Use Social
Social uses.
[UPFC]

Common Names

English
Job's Tears

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
  • Catálogo de Plantas y Líquenes de Colombia

    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Flora of West Tropical Africa

    • Flora of West Tropical Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora.
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Living Collection Database

    • Common Names from Plants and People Africa http://www.plantsandpeopleafrica.com/
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Science Photographs

    • Copyright applied to individual images
  • Universidad Nacional de Colombia

    • ColPlantA database
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Useful Plants and Fungi of Colombia

    • http://creativecommons.org/licenses/by-nc-sa/3.0