Template:Quisumbing & Merrill, 1928
- Quisumbing, E. & Merrill, E.D. 1928. New Philippine plants. The Philippine Journal of Science 37(2): 133–213. Plates 1–4. PDF. Internet Archive.
- Date of publication: October 1928.
- Note: pp. 133–134: 'Unless otherwise indicated in the text, the actual types of the new species described are deposited in the Bureau of Science herbarium, Manila, with isotypes in the herbarium of the University of California. In a few cases the types are in the University of California herbarium, with isotypes in the Bureau of Science. As far as additional duplicates are available, material will be sent to several of the larger European and American herbaria.'
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