Watson, S. 1891. Proc. Amer. Acad. Arts. 26 : 141.
Type Status:
Isosyntype
Place:
San Jose Pass, San Luis Potosi, Mexico, North America - Neotropics
Collection Date:
Jul 1890
Notes:
3 additional duplicates at GH. Sorensen (1969, Rhodora 71: 349) cites "holotype" at US but neither annotates nor explicitly cites either of 2 original US sheets as such; lectotypification not effected.