V. Koehl

Transmitting tissue architecture in basal-relictual angiosperms: Implications for transmitting tissue origins.

Greta Z. Chiu, T. Sage, P. Bernhardt, 2009, American journal of botany.

The Causes of self-sterility in natural populations of the relictual angiosperm, Illicium floridanum (Illiciaceae).

L. B. Thien, T. Sage, V. Koehl, 2004, Annals of botany.