Preliminary notes on the Scrophulariaceae of Peru.

v.31:no.8(1967)

Monograph of the genus Russelia (Scrophulariaceae)

v.29:no.4(1957)

An overlooked genus of the Scrophulariaceae / Louis O. Williams.

v.32:no.14(1970)

Synopsis of Hemichaena, including Berendtiella (Scrophulariaceae) [by] John W. Thieret.

v.34:no.7(1972)

Flora of Peru.

v.13:pt.5B:no.3 (1971) [Scrophulariaceae]