| - davidii Franchet [1887, Nouv. Arch. Mus. Hist. Nat. Paris, sér. 2, 10 : 65] 2n = 76 N, J 4, 5, 6 | |
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| - globosa J. Hope [1782, Verh. Harlem, 20 (2) : 417, tab. 11] 2n = 38 N, J 3, 4, 5, 6 | |
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| - albiflora Hemsley [1889, J. Linn. Soc. London (Bot.), 26 : 118] 2n = c. 114 N 3, 4, 5, 6 | |
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| - x weyeriana Weyer [ ] (B. davidii globosa) J | |
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