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By: Dümmer, R AType: ArticleIn: Annals of botanyVolume: 26Series:Issue:Date: 1912-10Page Range: 1123--1124Publication Info: London, Academic Press [etc.],Subjects:
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By: Dümmer, R AType: ArticleIn: Annals of botanyVolume: 25Series:Issue:Date: 1911-10Page Range: 1205--1206Publication Info: London, Academic Press [etc.],Subjects:
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By: Dümmer, R AType: ArticleIn: Annals of botanyVolume: 26Series:Issue:Date: 1912-07Page Range: 946--947Publication Info: London, Academic Press [etc.],Subjects:
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By: Dümmer, R A - Pearson, H H WType: ArticleIn: Transactions of the Royal Society of South AfricaVolume: 3Series:Issue:Date: 1913Page Range: 275--335Publication Info: Cape Town, Royal Society of South Africa,Subjects: