Leafy plants included dandelion greens and the young leaves of the orach plant. His most important work was "Magen Avraham", a commentary on Shulchan Aruch, Orach Hayyim. In 1913, Rabbi Hyamson was elected Rabbi of Congregation Orach Chaim in New York. That on the "Orach Chaim" was published in Shklov in 1803. In 1911, he returned to New York to the Orach Chayim Congregation. Orach Chayyim precludes women who wish to wear tefillin from doing so. This edition adds comparisons to rulings by the "Mishnah Berurah" in "Orach Chaim". See further&colon; Shulkhan Arukh Orach Chayim 219&colon;7; Chayei Adam "Shabbos" 15.