| Scientific name: | Polygonum palaestinum Zohary | |
| Common name: | Horsetail knotweed | |
| Hebrew name: | ארכובית ארץ-ישראלית | |
| Family: | Polygonaceae, ארכוביתיים |
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| Life form: | Chamaephyte, semi-shrub | |
| Leaves: | Alternatre, entire | |
| Flowers: | Pink, white | |
| Flowering Period: | March, April, May, June, July, August, September, October, November, December | |
| Habitat: | Sand | |
| Distribution: | Mediterranean Woodlands and Shrublands | |
| Chorotype: | Med - Saharo-Arabian | |
| Summer shedding: | Perennating |
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. palaestinum, from Palestine. The Hebrew name: ארכובית, arcuvit, formed from ארכבה, arcuva (Post Biblical Hebrew: knee, knee joint) with suffix -it. Biblical Hebrew: ברך, bereh, knee.
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