There are 197 pages with 1963 entries

Results
 Family  Genus  Specific epithet  Ploidy level  Chromosome number  Bs range  Complete citation reference
Apiaceae Pimpinella saxifraga 40 1 Goldblatt, P., & Johnson, D. E. (Eds.). (2003). Index to plant chromosome : numbers 1998-2000. St. Louis,Missouri (U.S.A.): Missouri Botanical Garden.
Apiaceae Sium latifolium 20 1-2 Goldblatt, P., & Johnson, D. E. (Eds.). (2003). Index to plant chromosome : numbers 1998-2000. St. Louis,Missouri (U.S.A.): Missouri Botanical Garden.
Apiaceae Ligustica thomsonii 2,00 22 1-2 Hamal, I. A., & Koul, A. K. (1986). B-chromosomes in Ligusticum thomsonii var. evolutior C.B. Clarke (Umbelliferae). Cytologia, 51(3), 427–432.
Apodanthaceae Pilostyles thurberi 5,00 60 1-2 Rutherford, R. J. (1970). The anatomy and cytology of Pilostyles thurberi Gray (Rafflesiaceae). Aliso, 7, 263–288.
Araliaceae Hydrocotile ramiflora 12 1-3(G) Goldblatt, P., & Johnson, D. E. (Eds.). (2000). Index to plant chromosome : numbers 1996-97. St. Louis,Missouri (U.S.A.): Missouri Botanical Garden.
Araliaceae Centenella asiatica 2,00 22 1-2 Joshi, S., & Raghuvanshi, S. S. (1970). B-chromosomes in Centenella asiatica. Genetica Iberica, 22, 161–162.
Araliaceae Hedera helix 48 1 Goldblatt, P., & Johnson, D. E. (Eds.). (2003). Index to plant chromosome : numbers 1998-2000. St. Louis,Missouri (U.S.A.): Missouri Botanical Garden.
Asclepiadaceae Hoya australis 22 1 Goldblatt, P., & Johnson, D. E. (Eds.). (2000). Index to plant chromosome : numbers 1996-97. St. Louis,Missouri (U.S.A.): Missouri Botanical Garden.
Asclepiadaceae Hoya neo-caledonica 22 1 Goldblatt, P., & Johnson, D. E. (Eds.). (2000). Index to plant chromosome : numbers 1996-97. St. Louis,Missouri (U.S.A.): Missouri Botanical Garden.
Asteraceae Cirsium hookerianum 2,00 20 2 Frankton, C., & Moore, R. J. (1963). Cytotaxonomy of Cirsium muticum, Cirsium discolor and Cirsium altissimum. Canadian Journal of Botany, 41(1), 73–84.

B-chrom database 2017