- IPNI Life Sciences Identifier (LSID)
- Proceedings of the American Academy of Arts and Sciences. Boston, MA
- 5: 173, adnot.
- Date of Publication
- mid ? 1861
- Family as entered in IPNI
- alt. 2000 ft
- 35° E
- Distribution Of Types
- Colorado (Northwestern U.S.A., Northern America)
Engelmann's name was published within A. Gray's article, which was issued as a pre-print in 1861.