2020
Chromosome architecture drives cycad evolution. Cycads 5(1): 23-32.
2014
Sex determination and sex change in cycads: tantalizing new hints. Cycad Newsletter 37(2-3): 29.
2012
2011
Isotomous branching at the Zamia furfuracea cone axis. Cycad Newsletter 34(1): 29.
2008
2007
2006
Review of Growing hardy orchids by John Tullock. Plant Science Bulletin 52(2): 67-68.
2004
Epipactis gigantea in Marble Canyon. Orchids 73(7): 488.
2003
Sex change in cycads [Roy Osborne and Root Gorelick]. Palms and Cycads 76: 10-15.