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Authors: Hansen, A. Katie; Gilbert, Lawrence E.; Simpson, Beryl B.; Downie, Stephen R.; Cervi, Armando C.; Jansen, Robert K.
Source: Systematic Botany, Volume 31, Number 1, January-March 2006, pp. 138-150(13)
Publisher: American Society of Plant Taxonomists
Document Type: Regular Paper
Publication date: January 1, 2006