Polygonum equisetiforme, Horsetail Knotweed,
Hebrew: ארכובית שבטבטית, Arabic: قضاب, Egypt: قرضاب "Qordab"

Scientific name:  Polygonum equisetiforme Sm.
Common name:  Horsetail Knotweed
Hebrew name:   ארכובית שבטבטית
Arabic name:  قضاب
Egypt:  قرضاب "Qordab"
Family:  Polygonaceae, ארכוביתיים

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Life form:  Hemicryptophyte
Stems:  30-100 cm; procumbent or ascending, numerous, branched
Leaves:  Alternate, oblong to linear, acute, wrinkled margins entire
Inflorescence:  Axillary clusters of 2-3, forming long, usually lax, terminal spikes; herbaceous bracts
Flowers:  Pink, white, 2 - 4 mm in diameter; perianth with 5 partly fused tepals; 8 stamens, white filament, yellow anther; 2-3 styles
Fruits / pods:  Achenes, blackish, glossy, 2-5 mm
Flowering Period:  The whole year
Habitat:  Batha, Phrygana
Distribution:  Mediterranean Woodlands and Shrublands, Semi-steppe shrublands, Shrub-steppes, Deserts and extreme deserts, Montane vegetation of Mt. Hermon
Chorotype:   Med - Irano-Turanian
Summer shedding:  Perennating

Polygonum equisetiforme, Horsetail Knotweed, ארכובית שבטבטית

Derivation of the botanical name:
Polygonum, polys, πολυϛ, πολλη, πολυ, much, many, frequent; large; heavy; gonu, a knee-joint; from the many joints in the stem.
equisetiforme, equus, a horse; seta, a bristle; Horsetail form.
The Hebrew name: ארכובית, arcuvit, formed from ארכבה, arcuva (Post Biblical Hebrew: knee, knee joint) with suffix -it. Biblical Hebrew: ברך, bereh, knee.
  • The standard author abbreviation Sm. is used to indicate James Edward Smith (1759 – 1828,an English botanist and founder of the Linnean Society.
See the list of Medicinal herbs in Israel, the parts used and their medical uses to treat various diseases.

Polygonum equisetiforme, Horsetail Knotweed, ארכובית שבטבטית

Polygonum equisetiforme, Horsetail Knotweed, ארכובית שבטבטית
Location: Bene Zion Nature Reserve