by Robert T. Clausen
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Variation of species of Sedum of the Mex...
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...
A botanical study of the yam beans (Pach...
An account of the genus Sedum as found i...
Sedum
Sedums of Europe-- stonecrops and wallpe...
Untersuchungen über die Entwicklung der...
I. The genera Pedilanthus and Cubanthus,...
The plant lover's guide to sedums