Zygophyllum dumosum, Bean caper plant,
Hebrew: זוגן השיח, Arabic: خريزى، خريزه

Scientific name:  Zygophyllum dumosum Boiss.
Scientific name:  Tetraena dumosa (Boiss.) Beier & Thulin
Common name:  Bushy Bean caper plant
Hebrew name:   זוגן השיח
Arabic name:   خريزى، خريزه
Plant Family:  Zygophyllaceae, Bean Caper Family, or Caltrop Family, משפחה זוגניים

פרחים וצמחי בר בארץ ישראל

Life form:  Chamaephyte, semi shrub
Succulence:  Leaf succulent
Stems:  Height 40-90cm, diffusely branched
Leaves:  Opposite, succulent; 2-foliolate with 0.5-1 cm, canescent, cylindrical, deciduous leaflets
Inflorescence:  Solitary, and axillary
Flowers:  white petals
Fruits / pods:  4-5-angled or winged capsule
Flowering Period:  February, March, April
Habitat:   Shrub-steppes, Desert
Distribution:  Semi-steppe shrublands, Shrub-steppes, Deserts and extreme deserts
Summer shedding:  Perennating

Zygophyllum dumosum, Bean caper plant, זוגן השיח

Derivation of the botanical name:
Zygophyllum, zygo (Greek), "joined, yoked"; phyllon, phyll, φυλλον, "leaf", foliage.
dumosus, dumos, "full of thorn bushes, bushy".
Tetraena, probably from the Greek τέτταρες ‎(téttares), "four," suffix -ένα -ena an organic compound.
The Hebrew name: זוגן, zugan, from זוג, zug, pair, referring to the paired leaves of many of the species.
  • The standard author abbreviation Boiss. is used to indicate Pierre Edmond Boissier (1810 – 1885), a Swiss botanist, explorer and mathematician.
Michael Evenari (1904-1989) describes, that the Zygophyllum dumosum has developed a special technique that can reduce its transpiring surface by up to 96 percent ("The Negev: the challenge of a desert").
Michael Zohary (1898-1983), a pioneering Israeli botanist, suggests on the basis of its cognate with the Arabic illam that Elim in Numbers 33:9-10 was named for Zygophyllum dumosum.

Bible resources:
  1. Numbers 33:9-10
    They left Marah and went to Elim, where there were twelve springs and seventy palm trees, and they camped there. They left Elim and camped by the Red Sea.

Zygophyllum dumosum, Bean caper plant, זוגן השיח , خريزى، خريزه

Zygophyllum dumosum, Bean caper plant, זוגן השיח , خريزى، خريزه

Location: Nahal Shani Riverbed (red Nubbian sandstone) in the Eilat Mountains.