[Adelanwa M. A., Hussaini S. W. A., Falusi O. A. & Awulu E. A. 2014. Chromosome counts and cytomorphological studies of nine species of Crotalaria (Linn) from Northern Nigeria. International Journal of Biological Research 6(1): 95-102.]Search in Google Scholar
[Agyeno O. E. & Azzuwut P. A 2014a. Comparative External Morphology in the Genus Crotalaria L. in Jos, Nigeria Unising Numerical Taxonomy. Journal of Botanical Society of Nigeria, p. 12-16.]Search in Google Scholar
[Agyeno O. E, Jayeola A. A, Ajala B. A. & Blessing J. M. 2014b. Exo-Morphology of Vegetative Parts Support the Combination of Solenostemon rotundifolius (Poir) J. K. Morton with Plectranthus esculentus N. E. Br. Natal (Lamiaceae) with insight into infra specific variability. Advance in Agriculture & Botanics 6(1): 16-25.]Search in Google Scholar
[Ansari A. A. 2008. Crotalaria L. in India. Dehra-Dunn: Bishen Singh Mahendra Pal Singh, 376 pp.]Search in Google Scholar
[Baker E. G. 1914. The African species of Crotalaria. Journal of the Linnean Society Botany 42: 241-425.10.1111/j.1095-8339.1914.tb00883.x]Search in Google Scholar
[Bisby F. A. 1970. The evaluation and selection of characters in angiosperm taxonomy: An example from Crotalaria. New Phytologist 69: 1149-1160.10.1111/j.1469-8137.1970.tb02495.x]Search in Google Scholar
[Bisby F. A. 1973. The role of taximetrics in angiosperm taxonomy I. Empirical comparisons of methods using Crotalaria L. New Phytologist 72: 699-726.10.1111/j.1469-8137.1973.tb04420.x]Search in Google Scholar
[Bisby F. A. & Polhill R. M. 1973. The role of taximetrics in angiosperm taxonomy II. Parallel taximetric and orthodox studies in Crotalaria L. New Phytologist 72: 727-742.10.1111/j.1469-8137.1973.tb04421.x]Search in Google Scholar
[Boatwright J. S., Le Roux M. M., Wink M., Morozova T. & Van Wyk B.-E. 2008. Phylogenetic relationships of tribe Crotalarieae (Fabaceae) inferred from DNA sequences and morphology. Syst Bot 33: 752-761.10.1600/036364408786500271]Open DOISearch in Google Scholar
[Boatwright J. S., Wink M. & Van Wyk B.-E. 2011. The generic concept of Lotononis (Crotalarieae, Fabaceae): Reinstatement of the genera Euchlora, Leobordea and Listia and the new genus Ezoloba. Taxon 60: 161-177.10.1002/tax.601014]Open DOISearch in Google Scholar
[Britto J. S, Joelri L., Michael R. S., Prabhu S. & Senthil-Kumar S. R. 2011. Identification of agronomically valuable species of Crotalaria based on phenetics. Agriculture and Biology Journal of North America 5: 840-847.10.5251/abjna.2011.2.5.840.847]Search in Google Scholar
[El-Gazzar A. 2008. Taxonomic assessment of five numerical methods and its implication on the classification of Hyptis suaveolens Linn (Labiatae). Alabama Journal of Botany 2: 141-178.]Search in Google Scholar
[Hotelling H. 1933. Analysis of a complex of statistical variables into principal components. Journal of Education Psychology 24: 417-441.10.1037/h0071325]Open DOISearch in Google Scholar
[Hotelling H. 1936. Simplified calculation of principal components. Psychometrika 1: 27-35.10.1007/BF02287921]Search in Google Scholar
[Humphries J. M., Bookstein F. L., Chernoff B., Smith G. R., Elder R. L. & Poss S. G. 1981. Multivariate discrimination by shape in relation to size. Syst Zool 30: 291-308.10.2307/2413251]Open DOISearch in Google Scholar
[Hussaini S. W. H. & Iwo G. A. 1992. Cytomorphological studies of some weedy species of the Family Leguminosae from Jos Plateau, Nigeria. Feddes Repertorium 101(1): 41-47.]Search in Google Scholar
[Hutchinson J., Dalziel J. M. & Keay R. W. J. 1958. Flora of West Tropical Africa. Vol. 1, Part 2: 544-552. Crown Agents for Oversea Government and Administration, Millbank, London, S. W. I.]Search in Google Scholar
[James F. C. & Mcculloch C. E. 1990. Multivariate analysis in ecology and systematics: panacea or pandora's box? Annual Review of Ecology and Sysematics 21: 129-166.10.1146/annurev.es.21.110190.001021]Open DOISearch in Google Scholar
[Jayeola A. A. 2001. Effects of numerical methods, quantity and composition of numerical characters on the classification of the angraecoid orchids of Nigeria and Cameroun. Nigerian Journal of Ecology 3: 39-40.]Search in Google Scholar
[Le Roux M. M. & Van Wyk B.-E. 2013. A taxonomic revision of Amphitrichae, a new section of Crotalaria (Fabaceae). Syst Bot 38: 638-652.]Search in Google Scholar
[Lewis G., Schrire B., Mackinder B. & Lock M. 2005. Legumes of the world. 577 pp. Royal Botanical Gardens, Kew.]Search in Google Scholar
[Odewo S. A., Ajani B. A., Soyewo L. T, Omiyale O. A. 2015. Ecological Distribution of the Genus Crotalaria in Nigeria. International Journal of Scientific and Technology Research 4(8): 348-355]Search in Google Scholar
[Polhill R. M. 1968. Miscellaneous notes on African species of Crotalaria L. Kew Bulletin 22: 169-348.10.2307/4107767]Search in Google Scholar
[Polhill R. M. 1976. Genisteae (Adans.) Benth. and related tribes (Leguminosae). In: V. H. Heywood (ed.). Botanical systematic. Vol. 1, pp. 143-368. Academic Press, London.]Search in Google Scholar
[Polhill R. M. 1982. Crotalaria L. in Africa and Madagascar. 389 pp. Royal Botanical Garden, Kew.]Search in Google Scholar
[Raj M. J. L., Britto S. J., Prabhu S. & Senthikumar S. R. 2011. Identification of agronomically valuable species of Crotalaria based on phenetics. Agriculture and Biology Journal of North America 2: 843-844.10.5251/abjna.2011.2.5.840.847]Search in Google Scholar
[Rohfl F. J. 1998. NTSYS-PC: Numerical Taxonomy and Multivariate Analysis System. Version 2.02j. Applied Biostatistics Inc., New York.]Search in Google Scholar
[Sibichen M. T. & Nampy S. 2007. Crotalaria kurisumalayana Sibichen Nampy (Fabaceae), a new species from India. Candollea 62(1): 105-108.]Search in Google Scholar
[Sneath P. H. A. & Sokal R. R. 1973. Numerical Taxonomy: The Principles and Practice of Numerical Classification. W. H. Freeman, San Francisco.]Search in Google Scholar
[Sokal R. R & Rohlf J. F. 1997. Biometry. 3rd Edition. 85 pp. W. H. Freeman & Co, New York.]Search in Google Scholar
[Sokal R. R. & Sneath P. H. A. 1963. Principles of Numerical Taxonomy. 359 pp. W. H. Freeman & Co, San Francisco.]Search in Google Scholar
[Van Wyk B.-E. 2005. Tribe Crotalarieae. In: G. Lewis, B. Schrire, B. Mackinder & M. Lock (eds.). Legumes of the World. 273-281 pp. Royal Botanic Gardens, Kew.]Search in Google Scholar