1993
Siders, M. 1993. Bi-weekly updates on vegetation data collection from Accipiter nests in the Santa Fe N.F.
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Penstemon cardinalis ssp. Cardinalis
Siders, M. 1993. Bi-weekly updates on vegetation data collection from Accipiter nests in the Santa Fe N.F.
Sullivan, R.M and D.L. Houde-Nethers. 1995. Threatened and endangered species survey of the National Aeronautics and Space Administration's White Sands Test Facility (WSTF), New Mexico. Unpubl. report submitted by NMSU Physical Science Laboratory, Las Cr
Barker, Linda M. 2002. Lincoln National Forest inventory completion report, sensitive plant survey field notes for Penstemon cardinalis ssp. cardinalis. 89 p.
Lee-Chadde, S. and L.F. Huenneke. 1997. A handbook of rare, threatened and endangered plant species of the Sacramento Mountains. Dept. of Biology, New Mexico State University, Las Cruces, NM 88003. Draft. pp. 109.