There are 197 pages with 1963 entries

Results
 Family  Genus  Specific epithet  Ploidy level  Chromosome number  Bs range  Complete citation reference
Verbenaceae Duranta repens 34 1-3 Sousa, S. M., Reis, A. C., Silva, P. S., & Viccini, L. F. (2011). An increment in the Duranta repens L. (Verbenaceae) knowledge: DNA content, karyology, meiosis and palynology. Caryologia, 64(1), 110–116.
Verbenaceae Caryopteris grata 6,00 60 1-6 Gill, B. S., Singhal, V. K., Bedi, Y. S., & Bir, S. S. (1981). Accessory chromosomes in woody taxa. In P. K. Khosla (Ed.), Advances in Forest Genetics (Ambika Publications). Dehli.
Violaceae Viola striata 2,00 20 2 Clausen, J. (1929). Chromosome number and relationship of some North American species of Viola. Annals of Botany, 43(172), 741–764.
Violaceae Viola canina 4,00 40 Bs Clausen, J. (2010). Viola canina L., a cytologically irregular species. Hereditas, 15(1), 67–88
Violaceae Viola riviniana 4,00 40 1-2 Valentine, D. H. (1949). Vegetative and cytological variation in Viola riviniana Rchb. In British Flowering Plants and Modern Systematic Methods (pp. 48–53). London: Botanical Society of the British Isles
Violaceae Viola riviniana 2,00 40 5-7 Valentine, D. H. (1956). Variation and polymorphism in Viola. Proceedings of the Royal Society B: Biological Sciences, 145(920), 315–319
Violaceae Viola montana 4,00 40 10 Schmidt, A. (1961). Zytotaxonomische untersuchungen an europaischen Viola-arten der sektion Nominum. Österreichische Botanische Zeitschrift, 108(1), 20–88
Violaceae Viola rupestris 2,00 20 4-8 Schmidt, A. (1961). Zytotaxonomische untersuchungen an europaischen Viola-arten der sektion Nominum. Österreichische Botanische Zeitschrift, 108(1), 20–88
Violaceae Viola ovata-oblonga 2,00 20 3-6 Yoshioka, H., & Tanaka, R. (1984). On the occurrence of accessory chromosomes in Viola ovata-oblonga. Chromosome Information Service, 37, 28–29
Violaceae Viola canina 4,00 40 1-5 Goldblatt, P., & Johnson, D. E. (Eds.). (2003). Index to plant chromosome : numbers 1998-2000. St. Louis,Missouri (U.S.A.): Missouri Botanical Garden.

B-chrom database 2017