Revisions of the genera acanthospermum, flourensia, ouedaea and tithonia/
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| Format: | Book |
| Language: | English |
| Published: |
Washington:
Government Printing Office,
1921
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| Series: | United States : National Museum : Bulletin
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| Subjects: |
| Item Description: | At head of title: Contributions from the United States National Herbarium, vol. 20, part 10 |
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| Physical Description: | p. 383-436 : diagrs ; 25 cm. |
| Bibliography: | Includes index |