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CCDB → Angiosperms → Piperaceae → Piper → Piper longum L.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Piper longum L. | Piper longum L. | 52 | IPCN online | Samuel, R. 1987. Chromosome numbers in Piper. Kew Bull. 42: 465–470. | |||
| Piper longum L. | Piper longum L. | 30 | 60 | IPCN online | Bai, G. V. S. & D. Subramanian. 1985. Cytotaxonomical studies of south Indian Piperaceae. Cytologia 50: 583–592. | ||
| Piper longum L. | Piper longum L. | 52 | IPCN online | Samuel, R. & W. Morawetz. 1989. Chromosomal evolution within Piperaceae. Pl. Syst. Evol. 166: 105–117. | |||
| Piper longum L. | Piper longum L. | 26 | 52 | IPCN online | Mathew, P. J., P. M. Mathew & P. Pushpangadan. 1999. Cytology and its bearing on the systematics and phylogeny of the Piperaceae. Cytologia 64: 301–307. | ||
| Piper longum L. | Piper longum L. | 26II | 52 | IPCN online | Mathew, P. J., P. M. Mathew & P. Pushpangadan. 1998. Cytological studies in south Indian Piperaceae I. Piper. J. Cytol. Genet. 33(2): 149–153. | ||
| Piper longum L. | Piper longum L. | 26 | IPCN online | Sampathkumar, R. 1981. In Chromosome number reports LXXII. Taxon 30: 696. | |||
| Piper longum L. | Piper longum L. | 44 | IPCN online | Samuel, M. R. A. & K. V. A. Bavappa. 1981. Chromosome numbers in the genus Piper. Curr. Sci. 50: 197–198. | |||
| ! | Piper longum L. | Piper longum L. | 24 | Kumar, 1987 | Tjio, J.H. 1948 | ||
| ! | Piper longum L. | Piper longum L. | 24, 48, 96 | Kumar, 1987 | Sharma, A.K. & Bhattacharyya, N.K. 1959e | ||
| ! | Piper longum L. | Piper longum L. | 26 | Kumar, 1987 | Samuel, M.R.A. & Bavappa, K.V.A. 1981 | ||
| ! | Piper longum L. | Piper longum L. | 48 | Kumar, 1987 | Dasgupta, A. & Datta, P.C. 1976 | ||
| ! | Piper longum L. | Piper longum L. | 48, 96 | Kumar, 1987 | Sharma, A.K. & Bhattacharyya, N .K. 1958b | ||
| ! | Piper longum L. | Piper longum L. | 52 | Kumar, 1987 | Mathew, P.M. 1958b | ||
| ! | Piper longum L. | Piper longum L. | 24 | Darlington, 1955 | Tjio 1948 | ||
| ! | Piper longum L. | Piper longum L. | 52 | C-values database | Samuel R, Smith JB, Bennett MD. 1986. Nuclear DNA variation in Piper (Piperaceae). Canadian Journal of Genetics and Cytology 28: 1041-1043. | ||
| ! | Piper longum L. | Piper longum L. | 26 | 52 | Cave1958 | Mathew 1958a | |
| ! | Piper longum L. | Piper longum L. | 24, 48, 96 | Cave1959 | Sharma & Bhat. 1959a |