by Robert T. Clausen
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Variation of species of Sedum of the Mex...
Biennial species of Sedum of the Sierra ...
On the status of Botrychium dissectum va...
Najas arguta in Central America and its ...
Northeastern limits of the known range o...
Hybrids of the eastern North American su...
An account of the genus Sedum as found i...
Sedum
Sedums of Europe-- stonecrops and wallpe...
The plant lover's guide to sedums
I. The genera Pedilanthus and Cubanthus,...
Untersuchungen über die Entwicklung der...