Reference for Pesachim 77:17
מאי נזרעין דאמר רב נזרעין כהלכתן כהלכתן תנינא
Then say it is hirduf?<span class="x" onmousemove="('comment',' Jast.: a shrub or tree with bitter and stinging leaves, supposed to be rhododaphne, oleander.');"><sup>26</sup></span> -It is like unleavened bread:<span class="x" onmousemove="('comment',' To which it is placed in juxtaposition, ibid.');"><sup>25</sup></span> just as unleavened bread is a species of plant, so 'maror' means a species of plant. Then say it is harzipu?<span class="x" onmousemove="('comment',' Name of a bitter herb, not generally eaten.');"><sup>27</sup></span> - It must be like unleavened bread: just as unleavened bread is that which can be bought with second tithe money, so maror' is that which can be bought with second tithe money.<span class="x" onmousemove="('comment',' This excludes harzipu, for only what is generally eaten can be bought; v. Deut. XIV, 26: all the things enumerated there are normal victuals.');"><sup>28</sup></span> Rabbah son of R'Hanin said to Abaye: Say that maror means one [herb]?<span class="x" onmousemove="('comment',' Viz., the most bitter of all.');"><sup>29</sup></span> - Merorim [plural] is written. Then say that merorim means two? - It is like unleavened bread: just as unleavened bread [can be of] many species.<span class="x" onmousemove="('comment',' V. Mishnah Supra 35a.');"><sup>30</sup></span> so [can] maror [be of] many species. Rabbah son of R'Huna said in Rab's name: [Regarding] the herbs whereof the Sages ruled that a man can discharge his duty with them on Passover, they all may be sown in one garden bed. Is this to say that they are not [forbidden] on account of kil'ayim?<span class="x" onmousemove="('comment',' V.Glos.');"><sup>31</sup></span> Raba objected: [Lettuce] and willow lettuce, [garden] endives and wild endives, [garden] leeks and wild leeks, [garden] coriander and wild coriander, mustard and Egyptian mustard [and] the Egyptian gourd and the bitter gourd, - all these are not kil'ayim with one another.<span class="x" onmousemove="('comment',' Kil. I, 2.');"><sup>32</sup></span> [Thus] only lettuce with willow lettuce, but not lettuce with endives?<span class="x" onmousemove="('comment',' I.e., these are heterogeneous.');"><sup>33</sup></span> And should you answer, They are all taught together, surely Rab said: He teaches them in pairs? What did Rab mean by 'they are sown'? They are sown according to their law.<span class="x" onmousemove="('comment',' I.e., on the contrary, care must be taken not to sow them together, and when they are in one garden-bed the proper space must be left between the separate species.');"><sup>34</sup></span> [You say], 'According to their law'! but we [already) learned it: