| Locality | North of the mouth of the Bulusan River, Sorsogon Province, S.E. Luzon. |
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| Collection date | 08/03/1968 |
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| Collectors (aggregated) | Kraft, G.T., Kraft, C.U.C. |
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| Collecting no. | K169 |
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| Habitat | On overhung vertical channel wall faces. |
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| State | Sorsogon |
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| Family | Udoteaceae |
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| Genus | Halimeda |
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| Species | gigas |
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