What Qualifies as Maror
Verses in Tanach
Talmud / Midrash and Commentaries
Pesachim 39a
Yerushalmi Pesachim 29c
Bartenura Pesachim 2:6 s.v. Tamcha
Maharam Chalavah Pesachim 39a
Meiri Pesachim 39a
Rashi Chullin 59a - s.v. Ikra deMerirta
Rashi Pesachim 39a s.v. Tamcha, Charchavina, Ulshin, Merirta
Rashi Succah 13a s.v. Sheloshah
Rif Pesachim 39a s.v. Tamcha [and see Perush Rivvan there, too]
Ritva Pesachim 39a
Tosafot Succah 13a s.v. Merirta
Tosafot Yom Tov Pesachim 2:6 s.v. Tamcha
Post Talmud / Midrash, Pre-Rishonim
Mishneh Torah and Commentaries
Hilchot Chametz UMatzah 7:13
Hagahot Maymoniyot Hilchot Chametz UMatzah 7:13
Rishonim [Pre-"Code of Jewish Law"]
Agudah 162a
Aruch "Chamra"
Leket Yosher Orach Chaim p. 83, p. 92
Shut Mahari Weil 193
Shut Maharil 58
Rambam Commentary to Mishnah Pesachim 39a
Rokeiach 284
Sefer haIttur 2:54a
Sefer Minhagim deMaharam miRutenberg page 29
Sefer Raavyah 2:101
Semag Aseh 41 - Leaves vs. Roots
Shibbolei haLeket haShalem Seder Pesach 218
Tur, Shulchan Aruch ["Code of Jewish Law"] and Commentaries
Tur and Shulchan Aruch Orach Chaim 473:5
Bach Orach Chaim 473
Machatzit haShekel Orach Chaim 473:5
Taz Orach Chaim 473:8
Acharonim [Post-"Code of Jewish Law"]
Biur Shemot haRefuot 273, 285
Chacham Tzvi 119
Chatam Sofer 1: Orach Chaim 132
Eliyahu Rabbah Orach Chaim 473:13
Masat Binyamin Chiddushei Dinim Orach Chaim 3
Shelah 119a
Yosif Ometz (R' Yosef Hahn, not the Chida) 746, 765, 769
Recent Authorities
Chazon Ish Orach Chaim 124
Dikdukei Sofrim Pesachim 39a
Yechaveh Daat 1:18
Credits
Many of the references herein came from an article in Gesher 8 by Arthur Schaffer
To add sources or to suggest topics for source material, please e-mail me [Mordechai Torczyner] at: 
. All submissions are welcome and encouraged, and will be credited!
