Source that it must be a vegetable: Pesachim 39a, 39b
Source that it must be grown from the ground, of a species which can be bought with the money of the Secondary Tithe: Pesachim 39a
Source for there being many species which qualify for Bitter Herbs: Pesachim 39a
Bitter Herbs is soft in the beginning, but then its stem hardens: Pesachim 39a
List of eligible vegetables: Pesachim 39a
One may even use lettuce; this is symptomatic of Hashem's mercy: Pesachim 39a
Any vegetable with sap: Pesachim 39a
Any vegetable with a green which isn't too rich: Pesachim 39a
Using the vegetable or the leaf: Pesachim 39a
If using the actual vegetable, it may be wet or dry: Pesachim 39a
If using the leaves, they must be wet: Pesachim 39b
Withered Stems: Pesachim 39b
Using a type of lettuce which grows wildly, in swamps: Succah 13a
Using a type of green called "Akravnin" or "Arkavlin," which has leaves resembling scorpions, and may be a kind of grass which grows around palm trees: Eruvin 23a, 26b
"Karpas" precedes the Bitter Herbs: Pesachim 114a Hand-Washing before Bitter Herbs: Pesachim 115a-b
Dipping Bitter Herbs in Charoses [because of poison (Rashi) or worms (Rashbam)]: Pesachim 115b, 116a
Not keeping the Bitter Herbs in the Charoses long enough to dull the bitterness: Pesachim 115b
Bitter Herbs must be eaten knowingly: Pesachim 114b
Bitter Herbs swallowed in one gulp: Pesachim 115b
If one swallowed Bitter Herbs and Matzah together: Pesachim 115b
Swallowed inside a piece of bark: Pesachim 115b
Eating it with the Pesach Offering: Pesachim 95a
Eating it with the Second Pesach: Pesachim 95a
The threshold amount is an Olive Amount: Pesachim 39a
An Olive Amount of Bitter Herbs eaten in longer than the alloted time: Pesachim 114b
Different species can be used in combination to reach the legal threshold: Pesachim 39a
Blessing of "Al Achilat Maror": Pesachim 114b-115a
