Emex spinosa, Spiny threecornerjack, Devil's thorn,
Hebrew: אמיך קוצני, Arabic: حميض, Egypt: ضرس العجوز "Dirs El-'Agouz"

Scientific name:  Emex spinosa (L.) Campd.
Common name:  Spiny threecornerjack, Devil's thorn
Hebrew name:  אמיך קוצני
Arabic name:  حميض
Egypt:  ضرس العجوز "Dirs El-'Agouz"
Family:  Polygonaceae, ארכוביתיים

Fleurs sauvages, Wildblumen, Fiori, флоры, Flores Silvestres, زهور
Location:Napoleon Hill, Ramat Gan

Life form:  Therophyte, annual
Spinescence:  Fruits
Stems:  30-60cm; erect or ascending, branched, base often reddish
Leaves:  Alternate, rosette, entire, smooth
Inflorescence:  Male flowers in terminal and axillary, pedunculate clusters; female axillary, sessile
Flowers:  Green, membranous
Fruits / pods:  Fruit an achene enclosed in persistent hardened perianth, 4–8 mm long, 2.4–5 mm wide and thick; perianth 3-angled, each face with 8–12 pit-like depressions, spines 1.5–3 mm
Flowering Period:   January, February, March, April, May, December
Habitat:  Shrub-steppes, Desert, Sand
Distribution:  Mediterranean Woodlands and Shrublands, Semi-steppe shrublands, Shrub-steppes, Deserts and extreme deserts
Chorotype:  Mediterranean
Summer shedding:  Ephemeral

Emex spinosa, Spiny threecornerjack, Devil's thorn, حميض,אמיך קוצני
Location:Napoleon Hill, Ramat Gan

Derivation of the botanical name:
Emex, from Latin ex, "out of," and Rumex (genus name for docks and sorrel), referring to the segregation from that genus.
spinosa, spiny.
  • The standard author abbreviation L. is used to indicate Carl Linnaeus (1707 – 1778), a Swedish botanist, physician, and zoologist, the father of modern taxonomy.
  • The standard author abbreviation Campd. is used to indicate Francisco Campderá (1793 - 1862), a Spanish botanist.