Thus explained in Rabbi Hai Gaon's Commentary on Mishnah Uktzin 1:2 [3]; Sefer Arukh, s.v. חזרת; Mishnah Commentary of Rabbi Nathan, President of the Academy, s.v. Mishnah Kila'im 1:2; Zohar Amar, Flora and Fauna in Maimonides' Teachings, Kefar Darom 2015, p. 77 OCLC783455868[Hebrew].
El'ad Kapah, The Identification of the Mishna Plants According to Rabbi Nathan's Commentary of the Mishna, Ramat-Gan 2007, p. 48 (Hebrew); Zohar Amar, Flora and Fauna in Maimonides' Teachings, Kfar Darom 2015, pp. 88–89 OCLC783455868. It is variously identified as a vine growing around palms, a type of thistle, or a type of acacia.
