| Medicago rigidula (L.) All. | Agarwal, K. & P. K. Gupta. 1983. Cytological studies in the genus Medicago Linn. Cytologia 48: 781–793. | 82-83 | 8 | |
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| Medicago rigidula (L.) All. | Astanova, S. B. 1981. Chromosome numbers of Leguminosae of flora in Tajikistan. Dokl. Akad. Nauk Tadziksk. SSR. 24: 61–63. (In Russian). | 82-83 | | 16 |
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| Medicago rigidula (L.) All. | Small, E., B. Brookes & E. J. Crawford. 1990. Intercontinental differentiation in Medicago rigidula. Canad. J. Bot. 68: 2607–2613. | 90-91 | 7 | |
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| Medicago rigidula (L.) All. | Magulaev, A. Y. 1992. About cytogeography of Medicago L. species in the northern Caucasus flora. Pp. 33–34 Tezisy III Soveshchanie po Kariologii Rastenii. | 92-93 | | 16 |
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| Medicago rigidula (L.) All. | Mariani, A., F. Pupilli & O. Calderini. 1996. Cytological and molecular analysis of annual species of the genus Medicago. Canad. J. Bot. 74: 299–307. | 96-97 | | 14 |
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| Medicago rigidula (L.) All. | Ferakova, V. & A. Murin. 1978. In IOPB chromosome number reports LX. Taxon 27: 223–231. | | | 16 |
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| Medicago rigidula (L.) All. | Fernandes, A. & M. QUEIROS. 1978. Contribution à la connaissance cytotaxinomique des Spermatophyta du Portugal. IV. Leguminosee (Suppl. 3). Bol. Soc. Brot., sér. 2 52: 79–164. | | | 14 |
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| Medicago rigidula (L.) All. | Fernandes, A., M. F. SANTOS & M. QUEIROS. 1977. Contribution à la connaissance cytotaxonomique des Spermatophyta de Portugal. Leguminosae. Bol. Soc. Brot., sér. 2 51: 137–186. | | | 14 |
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| Medicago rigidula (L.) All. | KLIPHUIS, E. 1977. In IOPB chromosome number reports LVI. Taxon 26: 257–274. | | | 14 |
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| Medicago rigidula (L.) All. | Ibragimova, S. S. 1999. Chromosome numbers of annual species of the genus Medicago L. Citologija 41(12): 1064. | 01-03 | | 14 |
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| Medicago rigidula (L.) All. | Runemark, H. 2006. Mediterranean chromosome number reports 16 (1473--1571). Fl. Medit. 16: 408–425. | 04-06 | | 16 |
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