No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
1
| 'Mañana' | Large | Dark-Green | | | Unknown | Near-White | Unknown | Tompkins, Chet & Ruh, Peter & Ruh, Jean | .2001 |
2
| 'Mango Lettuce' | Medium | Light-Green | | | Hybrid | Near-White | Unknown | Vissers, Louis | --NR-- |
3
| 'Marlu's Clayton' | Large | Yellow | | | Hybrid | Near-White | June to July | Overhiser, Martin | .2014 |
4
| 'Marlu's Eliza Jane' | Small | Dark-Green | | | Hybrid | Med-Lavender | August | Overhiser, Martin | .2014 |
5
| 'Marlu's Elliot' | Miniature | Med-Green | | | Hybrid | Pale-Lavender | August | Overhiser, Martin | .2014 |
6
| 'Marlu's Marla Jean' | Miniature | Light-Green | | | Hybrid | Pale-Lavender | July to August | Overhiser, Martin | .2014 |
7
| 'Marlu's Ronald Wayne' | Medium | Light-Green | | | Hybrid | Med-Lavender | July to August | Overhiser, Martin | .2014 |
8
| 'Marnie's Delight' | Medium | Dark-Green | Medial | Yellow | Unknown | Med-Lavender | July to August | Kuenster, Rod | .2006 |
9
| 'Maruba Tachi' | Medium | Dark-Green | | | Sport | Light-Purple | August | Unknown | --NR-- |
10
| 'Mean Joe Green' | Medium | Blue/Green | | | Hybrid | Med-Lavender | July to August | Zolock, Steve & Zolock, Sarah | .2008 |
11
| 'Memories' | Small | Med-Green | Streaked | Green | Hybrid | Light-Purple | August to September | Klose, Heinz & Ruh, Peter | .2002 .2018 |
12
| 'Merci Marci' | Small | Blue/Green | Marginal | White | Unknown | Med-Lavender | July to August | Asch, Stuart | .2009 |
13
| 'Mercy Me' | Medium | Dark-Green | | | Hybrid | Med-Lavender | June to July | McDonell, Harold | .2021 |
14
| 'Michael S. Flaherty' | Large | Light-Green | | | Hybrid | Pale-Lavender | June to July to August | Chamberlain, Steve | .2014 |
15
| 'Michael T. Rozanski' | Giant | Blue/Green | | | Hybrid | Near-White | June to July | Chamberlain, Steve | .2004 |
16
| 'Michael's Legacy' | Small | Dark-Green | Marginal | White | Hybrid | Unknown | July to August | Zolock, Steve & Zolock, Sarah | .1999 |
17
| 'Millard Fillmore' | Large | Med-Green | | | Unknown | Unknown | Unknown | Ruh, Peter & Ruh, Jean | .2010 |
18
| 'Mini' | Small | Light-Green | | | Sport | Med-Lavender | June to July | Lydell, Ransom | --NR-- |
19
| 'Minna Blue' | Medium | Blue/Green | | | Unknown | Unknown | August | Ruh, Jean | .1997 |
20
| 'Minnehaha Creek Paladin' | Medium | Yellow | | | Hybrid | Pale-Lavender | July | Kwick, Charles | .2021 |
21
| 'Minnesota Wild' | Large | Dark-Green | Marginal | White | Hybrid | Med-Lavender | July to August | Carlson, Monty & Carlson, Julie | .2013 |
22
| 'Mint Condition' (Carlson) | Large | Med-Green | Marginal | White | Unknown | Med-Lavender | June to July | Carlson, Monty & Carlson, Julie | .2013 |
23
| 'Minute After a Rainy Sunset' | Medium | Light-Green | Streaked | Yellow | Sport | Pale-Lavender | July to August | McHugh, Ed | .2010 |
24
| 'Mirth' | Small | Light-Green | Marginal | Green | Hybrid | Med-Lavender | August to September | Matsubayashi, Nagao & Ruh, Peter & Ruh, Jean | .2001 |
25
| 'Miss Abbie' | Small | Blue/Green | | | Hybrid | Light-Purple | August | Schroeder, Bob & Schroeder, Barb | .2019 |
26
| 'Miss Jody's Special' | Medium | Med-Green | | | Unknown | Unknown | Unknown | Wrede, Arthur | --NR-- |
27
| 'Miss Mitzi' | Medium | Dark-Green | Marginal | White | Hybrid | Med-Lavender | June to July | Schroeder, Bob & Schroeder, Barb & Beilstein, Doug | .2016 |
28
| 'Miss Poland' | Small | Med-Green | Streaked | Yellow | Sport | Med-Lavender | June to July | Kijanska, Poll | .2019 |
29
| 'Misty' (Goodwin) | Miniature | Light-Green | Marginal | Yellow | Unknown | Med-Lavender | July to August | Goodwin, Randy | .2019 |
30
| 'Modern Dance' | Medium | Blue/Green | Streaked | White | Hybrid | Med-Lavender | August to September | Van Eechaute, Danny | .2014 |
31
| 'Moi Marlene' | Medium | Med-Green | | | Unknown | Pale-Lavender | Unknown | Ahlburg, Marlene | --NR-- |
32
| 'Money Honey' | Medium | Yellow | | | Unknown | Unknown | July to August | Malloy, Alex | .2003 |
33
| 'Moolah' | Miniature | Dark-Green | Marginal | Yellow | Hybrid | Pale-Lavender | June to July | Goodwin, Randy | .2013 |
34
| 'Moor Hound' | Large | Dark-Green | | | Unknown | Near-White | June to July | Smead, John J. | .2018 |
35
| 'Mosel' | Medium | Med-Green | | | Unknown | Med-Lavender | Unknown | Klose, Heinz & Ruh, Peter & Ruh, Jean | .2008 |
36
| 'Mount Olympus' | Large | Med-Green | | | Sport | Pale-Lavender | July | Malloy, Alex | --NR-- |
37
| 'Mr Jack' | Medium | Med-Green | | | Unknown | Med-Lavender | June to July | Wrede, Arthur | --NR-- |
38
| 'Munchkin Fire' | Miniature | Light-Green | | | Unknown | Med-Lavender | July | Goodwin, Randy | .2009 |
39
| 'Murphy's Golden Marge' | Medium | Yellow | | | Unknown | Pure-White | June to July | Zolock, Steve & Zolock, Sarah | .2001 |
40
| 'My Maria' | Small | Dark-Green | Medial | White | Sport | Deep-Purple | July to August | Sebright Gardens | .2018 |
41
| 'Mystic Giant' | Giant | Dark-Green | Marginal | Light Green | Unknown | Near-White | July to August | Klotz, Ruby & Klotz, B. | .2020 |
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