- Lawrence1
- Madison1
- Manhattan, cultivated on campus, KSAC1
- Mariposa1
- Missoula1
- Montgomery1
- Mosca Saddle, Manzano Mountains, Cibola National Forest, 30 miles southeast of Albuquerque1
- Mountain chaparral above Willow Spring, on English Lake Trail1
- Myanmar (Burma)1
- México1
- N Rocky Mtns., Missoula1
- NE limestone slopes of Mt. Ord. 15 miles south of Alpine Gage Estate1
- Naperville1
- Near Mitchell, Donaldson's Cave1
- Nevada1
- North Carolina1
- North slopes, McKittrick Canyon1
- Nuevo León1
- Oaxaca1
- Oberhessen, Kr. Alsfeld, Kestrich, im Park1