selected publications
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article
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Chromosome numbers of Umbelliferae (Apiaceae) from Africa south of the Sahara..
Botanical Journal of the Linnean Society.
65:195-208.
1982
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SEM survey of pollen morphology and classification in Hydrophyllaceae (Waterleaf family)..
American Journal of Botany.
69:40-53.
1982
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Chromosome numbers in Umbelliferae. V..
American Journal of Botany.
63:608-625.
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Chromosome numbers of Umbelliferae (Apiaceae) from Africa south of the Sahara..
Botanical Journal of the Linnean Society.
65:195-208.
1982
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book
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A systematic study of Perideridia (Umbelliferae-apioideae)..
Berkeley, CA: University of California Press..
1969
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A systematic study of Perideridia (Umbelliferae-apioideae)..
Berkeley, CA: University of California Press..
1969