There were 4 illustrations found for S. Workman
Arctium sp.J.E. Smith, Engl. Bot., ed. 3, vol. 5 : t. 699 (1866)
Arctium sp.J.E. Smith, Engl. Bot., ed. 3, vol. 5 : t. 699bis (1866)
Arctium sp.J.E. Smith, Engl. Bot., ed. 3, vol. 5 : t. 702 (1866)
Arctium sp.J.E. Smith, Engl. Bot., ed. 3, vol. 5 : t. 702bis (1866)
2 774191 Phacelia petrosa N.D.Atwood, F.J.Sm. & T.A.KnightNovon, vol. 12 : p. 23, fig. 4 (2002) [S. Workman]
2 965811 Sphaeralcea gierischii N.D.Atwood & S.L.WelshNovon, vol. 12 : p. 162, fig. 1 (2002) [S. Workman]
2 965853 Sphaeralcea moorei (S.L. Welsh) N.D. Atwood & S.L. Welsh [80 965819 Sphaeralcea grossulariifolia var. moorei S.L. Welsh]Novon, vol. 12 : p. 164, fig. 2 (2002) [S. Workman]
2 1504 Abronia bolackii N.D.Atwood, S.L.Welsh & K.D.HeilNovon, vol. 12 : p. 168, fig. 1 (2002) [S. Workman]