CCDBAngiospermsCompositaeSonchusSonchus asper (L.) Hill

148 chromosome counts in Sonchus asper (L.) Hill:


Name Accepted Name Gametophytic(n) Sporophytic(2n) Data Source reference
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CHROBASE MARCHI P. - 1971. Numeri cromosomici per la flora italiana:57-66.. Inform. Bot. Ital. , 3(2): 124-137.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Slovakia Database Májovský J. et al., 1970b: Index of chromosome numbers of Slovakian flora Part 2. - Acta Fac. Rerum Nat. Univ. Comen., Bot. 18: 45-60.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Slovakia Database Májovský J. et al., 1970b: Index of chromosome numbers of Slovakian flora Part 2. - Acta Fac. Rerum Nat. Univ. Comen., Bot. 18: 45-60.
!   Sonchus asper subsp. asper Sonchus asper (L.) Hill   18 Slovakia Database Májovský J. et al., 1978: Index of chromosome numbers of Slovakian flora (Part 6). - Acta Fac. Rerum Nat. Univ. Comen., Bot. 26: 1-42.
!   Sonchus asper subsp. asper Sonchus asper (L.) Hill   18 Slovakia Database Šimková Ľ., 2007: [New records in Carum, Chelidonium, Epilobium, Lathyrus, Linaria, Lychnis, Picris, Primula, Scorzoneroides, Sonchus, Vicia, and Viola], pp. 178, 189, 239, 358, 371, 380, 437, 469, 531, 554, 614, 616, 617, 620. - In: Marhold K., Mártonfi P., Mereďa P. jun., Mráz P. (eds), Chromosome number survey of the ferns and flowering plants of Slovakia. Veda, Bratislava.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IAPT/IOPB IAPT/IOPB Chromosome Data 8
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IAPT/IOPB IAPT/IOPB Chromosome Data 12
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IAPT/IOPB  
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IAPT/IOPB  
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9 18 Flora Iberica Palynological and cytological observations in Spanish Sonchus (Asteraceae). Mejas, J. A. & M. J. Dez.Grana32: 343-347(1993).
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Flora Iberica Contribution la connaissance cytotaxinomique des spermatophyta du Portugal. II. Compositae Fernandes, A. & M. Queirs.Bol. Soc. Brot. ser. 245: 5-121(1971).
  Sonchus asper subsp. asper Sonchus asper (L.) Hill   18 Flora Europaea Gadella & Kliphuis,
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Poland Database Walter R. and Kuta E. 1971. Cytological and embryological studies in Sonchus L. I. Sonchus asper (L.) Hill, and Sonchus oleraceus L. Acta Biol. Cracov. Ser. Bot. 14, 103-109.
  Sonchus asper var. asper Sonchus asper (L.) Hill   18(1) Asteracea Fernandes & Q. 1971 Bol. Soc. Brot. (ser. 2), Coimbra
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9(1)   Asteracea Taylor & M. 1968 Queen's Printer, Ottawa
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   25(1) Asteracea Barber 1941b Ann. Bot.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18(1) Asteracea Sorsa 1963a Arch. Soc. Zool. Bot. Fennicae <Vanamo>
  Sonchus asper subsp. asper Sonchus asper (L.) Hill 9(1)   Asteracea Wulff 1939a Ber. Deutsch. Bot. Gesells. Berlin
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN65 Larsen 1965b
!   Sonchus asper subsp. asper Sonchus asper (L.) Hill   18 IPCN65 Boulos 1965
!   Sonchus asper (L.) Vill. Sonchus asper (L.) Hill 9   IPCN65 Mehra et al. 1965
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN online Razaq, Z. A., S. Khatoon & S. I. Ali. 1988. A contribution to the chromosome numbers of Compositae from Pakistan. Pakistan J. Bot. 20: 177–189.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Kirschner, J., J. Stepanek & J. Stepankova. 1982. In IOPB chromosome number reports LXXVI. Taxon 31: 574–575.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9II   IPCN online KYHOS, D. W. & P. H. RAVEN. 1982. Miscellaneous chromosome numbers in Asteraceae. Madroño 29: 62, 274.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Probatova, N. S. & A. P. Sokolovskaya. 1981. Kariologicheskoe issledovanie sosudistykh rastenij ostrovov Dal'nevostocnogo gosudarstvennogo morskogo sapovednika. Sb. Cvetkaye Rastenija Ostrovov Dalnevostochnogo Morskogo Sapovednika. 92–114.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Nazarova, E. A. 1984. Chromosome numbers in the Caucasian representatives of the families Asteraceae, Brassicaceae, Fabaceae, Limoniaceae. Bot. Zhurn. SSSR 69(7): 972–975. (In Russian).
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN online Mulligan, G. A. 1984. Chromosome numbers of some plants native and naturalized in Canada. Naturaliste Canad. 111: 447–449.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN online Ghaffari, S. M. 1989. Chromosome studies in Iranian Compositae. Iran. J. Bot. 4: 189–196.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN online Prabha, C. 1989. Interspecific hybridisation in the genus Sonchus L. (Asteraceae). Genét. Ibér. 41: 135–145.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Nazarova, E. A. 1989. Karyological and palynological study of representatives of the genus Sonchus from the Caucasus. Bot. Žhurn. (Moscow & Leningrad) 74: 53–59.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Nishikawa, T. 1984. Chromosome counts of flowering plants of Hokkaido (7). J. Hokkaido Univ. Educ., Sect. 2B 35: 31–42.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN online Gupta, R. C. & B. S. Gill. 1989. Cytopalynology of north and central Indian Compositae. J. Cytol. Genet. 24: 96–105.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Parfenov, V. I. & S. A. Dmitrieva. 1988. Kariologicheskaja kharakteristika predstavitelej flory sosudistykh rastenij Berezinskogo biosfernogo zapovednika. Zapov. Belorussii Issl. 12: 3–8.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   32 IPCN online Nirmala, A. & P. N. Rao. 1984. Karyotype studies in Asteraceae. Cell Chromosome Res. 7: 26–28.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Prabha, C. 1988. A report of accessory chromosomes in two diploid species of Sonchus L. Cell Chromosome Res. 11: 28–29.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   32 IPCN online Nirmala, A. & P. N. Rao. 1989. Karyotype studies in some Asteraceae. Cell Chromosome Res. 12: 17–18.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Kiehn, M., E. Vitek, E. Hellmayr, J. Walter, J. Tschenett, C. Justin & M. Mann. 1991. Beiträge zur Flora von Österreich: Chromosomenzählungen. Verh. Zool.-Bot. Ges. Wien 128: 19–39.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Vogt, R. & C. Oberprieler. 1993. Chromosome numbers of north African phanerograms. I. Fl. Medit. 3: 187–210.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Morton, J. K. 1993. Chromosome numbers and polyploidy in the flora of Cameroon Mountain. Opera Bot. 121: 159–172.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN online Razaq, Z. A., A. A. Vahidy & S. I. Ali. 1994. Chromosome numbers in Compositae from Pakistan. Ann. Missouri Bot. Gard. 81: 800–808.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 18II   IPCN online Carr, G. D., R. M. King, A. M. Powell & H. Robinson. 1999. Chromosome numbers in Compositae. XVIII. Amer. J. Bot. 86(7): 1003–1013.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Albers, F. & W. Pröbsting. 1998. In R. Wisskirchen & H. Haeupler, Standardliste der Farn- und Blütenpflanzen Deutschlands. Bundesamt für Naturschutz & Verlag Eugen Ulmer, Stuttgart.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18, 18+3B IPCN online Lövkvist, B. & U. M. Hultgård. 1999. Chromosome numbers in south Swedish vascular plants. Opera Bot. 137: 1–42.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9 18 IPCN online Sidhu, M. K. 1979. Distributional and cytological studies of the weed flora of cultivable fields of Patiala district (Panjab). Ph.D. Thesis, Patiala. 1-230. 1979.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Bir, S. S. & M. Sidhu. 1980. Cyto-palynological studies on weed flora of cultivable lands of Patiala district (Punjab). J. Palynol. 16: 85–105.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9II 18 IPCN online Strid, A. & R. Franzen. 1981. In Chromosome number reports LXXIII. Taxon 30: 829–842.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Van Den Brand, C., F. C. M. V. Meel & J. H. Wieffering. 1979. In IOPB chromosome number reports LXIV. Taxon 28: 395–397.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Fernandez Casas, J., A. P. Sorolla & A. Susanna. 1980a. Numeros cromosomaticos de plantas occidentales, 48-54. Anales Jard. Bot. Madrid 36: 401–405.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   36 IPCN online Kuzmanova, B. & S. Georgieva. 1980. In Chromosome number reports LXIX. Taxon 29: 715.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9 18 IPCN online Bir, S. S. & M. Sidhu. 1979. Cytological observations in weed fiora of orchards of Paticla district, Punjab. Recent Res. Pl. Sci. (New Delhi). 7: 261–271.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   36 IPCN online Belaeva, V. A. & V. N. SIPLIVINSKY. 1976. Chromosome numbers and taxonomy of some species of Baikal flora. Bot. Žhurn. (Moscow & Leningrad) 61(6): 873–880.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Morton, J. K. 1977. A cytological study of the Compositae (excluding Hieracium and Taraxacum) of the British Isles. Watsonia 11: 211–223.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Nazarova, E. A. 1975. Chromosome numbers of some species of Armenian flora. Biol. Zurn. Armen. 28(1): 95–97.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN online Gill, L. S. 1978a. In IOPB chromosome number reports LX. Taxon 27: 223–231.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN online Gill, L. S. 1978c. Chromosome numbers of angiosperms in Tanzania: II. Adansonia 18: 19–24.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN online Keil, D. J. & D. J. Pinkava. 1976. Chromosome counts and taxonomic notes for Compositae from the United States and Mexico. Amer. J. Bot. 63: 1393–1403.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Kuzmanov, B. & S. Georgieva. 1976. In IOPB chromosome number reports LIII. Taxon 25: 483–500.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online LABADIE, J. 1976a. Contribution à l'etude caryosystematique des espeees halophiles du littoral languedocier (plus precisement, especes appartenant à la classe des Salicornietea). These, Universite du Languedoc. 222 pp.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN online Probatova. 2006. Further chromosome studies on vascular plant species from Sakhalin, Moneron and Kurile Islands. Biodivers. Biogeogr. Kuril Islands Sakhalin 2: 93–110.
  Sonchus asper subsp. asper Sonchus asper (L.) Hill 9   IPCN online Talavera, S., J. A. Devesa & E. F. Galiano. 1984. Notas cariosistemáticas sobre plantas norteafricanas. I. Compositae. Candollea 39: 271–280.
  Sonchus asper subsp. asper Sonchus asper (L.) Hill   18 IPCN online Vachova, M. 1978. In Index of chromosome numbers of Slovakian flora. Part 6. Acta Fac. Rerum Nat. Univ. Comenianae, Bot. 26: 1–42.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN72 HSIEH, T-S., A.B. SCHOOLER, A. BELL, J.D. NALEWAJA. 1972. Cytotaxonomy of three Sonchus species. Amer. J. Bot. 59: 789-796.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN67-71 TAYLOR, R.L., & G.A. MULLIGAN. 1968. Flora of the Queen Charlotte Islands. Part 2. Cytological aspects of the Vascular Plants. Queen's Printer, Ottawa. pp. 148.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN67-71 TORRES, A.M., & A.H. LIOGIER. 1970. Chromosome numbers of Dominican Compositae. Brittonia 22: 240-245.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN67-71 MAJOVSKY, J., ET. AL. 1970. Index of chromosome numbers of Slovakian flora. (Part 2). Acta Fae. Rerum Nat. Univ. Comenianae Bot. 18: 45-60.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN67-71 SUBRAMANYAM, K., & N. P. KAMBLE. 1967. In IOPB chromosome number reports XII. Taxon 16: 341-350.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN67-71 GADELLA, Th. W. J., & E. KLIPHUIS. 1966.' Chromosome numbers of flowering plants in the Netherlands II. Proc. Roy. Neth. Acad. Sci. Ser. C. 69: 541-556.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   IPCN67-71 BAQUAR, S.R. & S.H. ABID ASKARI. 1970. Chromosome studies in some flowering plants of West Pakistan. II. Genet. Iber. 22: 41-51.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN67-71 MARCHI, P. 1971. In Numeri cromosomici per la flora Italiana. Inf. Bot. Italiano 3: 124-157.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9 18 IPCN67-71 WALTER, R., & E. KUTA. 1971. Cytological and embryological studies in Sonchus L. I. Sonchus asper (L.) Hill. and Sonchus oleraceus L. Acta Biol. Cracov., Ser. Bot. 14: 103-109.
!   Sonchus asper subsp. asper Sonchus asper (L.) Hill   18 IPCN67-71 FERNANDES, A., & M. QUEIROS. 1971. Contribution a la connaissance cytotaxinomique des Spermatophyta du Portugal. II Compositae Bol. soc. Brot. 45 (ser. 2l: 5-122.
!   Sonchus asper subsp. asper Sonchus asper (L.) Hill   18 Love, 1948 Barber 1941, Rutland 1941, Vaarama (unpubl.).
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN73-74 NORDENSTAM, B. 1972. Chromosome numbers in some Compositae from Egypt. Bot. Notiser 125: 393-396.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 IPCN73-74 EDMONDS, J.M., P.O. SELL, & S.M. WALTERS. 1974. Some British chromosome counts in the Compositae sub-family Cichorioideae. Watsonia 10: 159-161.
!   Sonchus asper (L.) Vill. Sonchus asper (L.) Hill 9   IPCN73-74 SINGH, N.K. 1972. Cytological investigations in some Compositae of I
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Kumar, 1987 Wulff, H.D. 1939b ; Barber, H.N. 1941 ; Rutland, J.P. 1941; Heiser, C.B. & Whitaker, T.W. 1948; Vaarama (Love, A. & Love, D. 1948); Stebbins, G.L. eta!. 1953 ; Love, A. & Love, D. 1956b ; Mulligan, G.A. 1957 ; Nisioka, T. 1958 ; Henin (Boulos, L. 1960) ; Mehra, P.N. & Sidhu, S.S. 1960 ; Koul, M.L.H. 1964a; Mehra, P.N. et al. 1965; Gadella, T.W.J. & Kliphuis, E. 1966; Subramanyam,. K. & Kamble, N.P. 1967; Curran, P.L. 1968; Taylor, R.L. & Mulligan, G.A. 1968; Gupta, P.K. 1969b; Baquar, S.R. & Abid Askari, S.H. 1970a, b; Majovsky, J. et al. 1970b ; Torres, A.M. & Liogier, A.H. 1970 ; Fernandes, A. & Queiros, M. 1971 ; Marchi, P. 1971b; Ohno, R. 1971 ; Walter, R. & Kuta, E. 1971 ; Gupta, P.K. et al. 1972; Hsieh, T.-S. et al. 1972 ; Nordenstam, B. 1972; Singh, N.K. 1972 ; Edmonds, J.M. et al. 1974; Remanandan, P. & Mehra, P~N. 1974 ; Keil, D.J. & Pinkawa, D.J. 1976; Kuzmanov, B. & Georgieva, S. 1976; Labadie, J.P. 1976 ; Gill, L.S. 1978b; Brand, C.V.D. et al. 1979; Bir, S.S. & Sidhu, M. 1980; Gill, B.S., Gupta, R.C. & Kaur, S. 1980
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   36 Kumar, 1987 Kuzmanov, B. & Georgieva, S. 1980
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Wulff 1939b
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Barber 1941b
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Rutland 1941
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Heiser, Whitaker 1948
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Vaarama (Love
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Love D. 1948)
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Stebbins et al. 1953
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Love A., Love D. 1956b
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Mulligan 1957
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Nisioka 1958
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Renin (Boulos 1960)
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Koul M. L. 1964a
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Mehra P. N. et al.1965
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Fedorov, 1974 Gadella, Kliphuis 1966
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 C-values database Bachmann K, Price HJ, Bierweiler B. (pers. comm. 1975).
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   2n = 18 Austria_checklist Kiehn, M., Vitek, E., Hellmayr, E. et al. 1991. Beitr?ge zur Flora von ?sterreich: Chromosomenz?hlungen. Verh.Zool.-Bot.Ges.?sterreich 128, 19-39.°
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Cave1956 Love & Love b
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Cave1957 Mulligan
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 Cave1958 Nisioka 1958
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   CromoCat 2015 Baquar, S. R. & Abid Askari, S. H. (1970a). Chromosome numbers in some flowering plants of West Pakistan. Genét. Ibér. 22: 1-11.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   CromoCat 2015 Baquar, S. R. & Abid Askari, S. H. (1970b). Chromosome studies in some flowering plants of West Pakistan. II. Genét. Ibér. 22: 41-51.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   CromoCat 2015 Gupta, P. K. (1969b). Cytological investigations in some Indian Compositae. Cytologia 34: 429-438.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   CromoCat 2015 Mejías, J. A. & M. J. Díez. (1993). Palynological and cytological observations in Spanish Sonchus (Asteraceae). Grana 32: 343-347.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   CromoCat 2015 Razaq, Z. A., S. Khatoon & S. I. Ali. (1988). A contribution to the chromosome numbers of Compositae from Pakistan. Pak. J. Bot. 20: 177-189.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   CromoCat 2015 Taylor, R. L. & G. A. Mulligan. (1968). Flora of the Queen Charlotte Island. Part 2. Cytologiacl aspects of the Vascular Plants. Queen's Printer Ottawa
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   CromoCat 2015 Walter, R. & E. Kuta. (1971). Cytological and embryological studies in Sonchus L. I. Sonchus asper (L.) Hill and Sonchus oleraceus L. Acta Biol. Cracov., Ser. Bot. 14: 103-109.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 18II   CromoCat 2015 Carr, G. D., King, R. M., Powell, A. M. & Robinson, H. (1999). Chromosome numbers in Compositae. XVIII Amer. J. Bot. 86: 1003-1013.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 0 18 CromoCat 2015 Probatova, N.S.& Kazanovsky, S.G.& Rudyka, E.G. & Seledets, V.P. & Nechaev,V.A (2012). IAPT/IOPB Chromosome Data 13 Taxon 61:899-902
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 0 18 CromoCat 2015 Probatova. (2006). Further chromosome studies on vascular plant species from Sakhalin, Moneron and Kurile Islands. Biodivers. Biogeogr. Kuril Islands Sakhalin 2: 93–110.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill 0 32 CromoCat 2015 Nirmala, A. & P. N. Rao. (1989). Karyotype studies in some Asteraceae. Cell Chromosome Res. 12: 17-18
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Curran, P. L. (1968). Chromosome numbers of some Irish plants. Irish Naturalists' J. 16: 7-9.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Fernández Casas, J., Pons-Sorolla, A. & Susanna, A. (1980b). Números cromosomáticos de plantas occidentales, 48-54. Anales Jard. Bot. Madrid 36: 401-405.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Gadella, Th. W. J. & Kliphuis, E. (1966). Chromosome numbers of flowering plants in the Netherlands II. Proc. Kon. Ned. Akad. Wetensch. Ser. C 69(5): 541-556.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Kiehn, M., Vitek, E., Hellmayr, E., Walter, J., Tschenett, J., Justin, C. & Mann, M. (1991). Beiträge zur Flora von Österreich: Chromosomenzählungen. Verhandlungen der Zoologisch-botanischen Gesellschaft in Wien 128: 19-39
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Kirschner, J., Stepánek, J. & Stepánkova, J. (1982). Reports [In Löve, A. (ed.), IOPB chromosome numbers reports LXXVI]. Taxon 31(3): 574-575.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Kuzmanov, B., Georgieva, S. & Nikolova, M. (1993a). Karyological study of Bulgarian Asteraceae. Vll. Fitologija 44: 16-31.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Larsen, K. (1965b). Reports [In Löve, A. & O. T. Solbrig (eds.) IOPB chromosome numbers reports IV]. Taxon 14(2): 86-92.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Löve, A. & Löve, D. (1956b). Cytotaxonomical conspectus of the Icelandic flora. Acta Horti Gothob. 20(4): 65-291.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Marchi, P. (1971a). Numeri cromosomici per la flora italiana: 46-56. Inf. Bot. Ital. 3(1): 82-94.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Mejías, J. A. & M. J. Díez. (1993). Palynological and cytological observations in Spanish Sonchus (Asteraceae). Grana 32: 343-347.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Nazarova, E. (1984). Chromosome numbers in the Caucasian representatives of the families Asteraceae, Brassicaceae, Fabaceae, Limoniaceae. Bot. Žurn. 69(7): 972-975.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Nordenstam, B. (1972). Chromosome numbers in some Compositae from Egypt. Bot. Not. 125: 393-396.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Ohno, R. (1971). Chromosome studies in some species of the phanerogamous plants. Seibutsu Kyoz. Kik. Mar. Biol. Lab. Hokkaido Univ. Educ. 8: 69-71.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Probatova, N.S., Seledets, V.P., Rudyka, E.G., Gnutikov, A.A., Kozhevnikova, Z.V. & Barkalov V.Y. (2009). IAPT/IOPB Chromosome Data 8 Taxon 58 (4): 1284-1288
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Roux, J. & L. Boulos. (1972). Révision systématique du genre Sonchus L. s. l. II. Étude caryologique. Bot. Not. 125: 306-309.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Talavera, S., J. A. Devesa & E. F. Galiano. (1984). Notas cariosistemáticas sobre plantas norteafricanas. I. Compositae. Candollea 39: 271-280.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Torres, A. M. & A. H. Liogier. (1970). Chromosome numbers of Dominican Compositae. Brittonia 22: 240-245.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Uhríková, A. & A. Murín. (1970). Reports (In Májovsky, J. & al. (ed.), Index of chromosome numbers of slovakian flora. Part 2). Acta Fac. Rerum Nat. Univ. Comenianae, Bot. 18: 45-60.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Vaarama, A. (1948). In Löve, A. & Löve, D. Chromosome numbers of northern plant species. Icel. Univ. Inst. Appl. Sci. Dept. Agric. Rep. B, 3: 1-131.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Walter, R. & E. Kuta. (1971). Cytological and embryological studies in Sonchus L. I. Sonchus asper (L.) Hill and Sonchus oleraceus L. Acta Biol. Cracov., Ser. Bot. 14: 103-109.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18+3B CromoCat 2015 Lövkvist, B. & Hultgård, U.-M. (1999). Chromosome numbers in south Swedish vascular plants Opera botanica 137: 1-42
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   32 CromoCat 2015 Nirmala, A. & P. N. Rao. (1984). Karyotype studies in Asteraceae Cell Chromosome Res. 7: 26-28
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   36 CromoCat 2015 Belaeva, V. A. & Siplivinsky, V. N. (1976). Chromosome numbers and taxonomy of some species of Baikal flora. II. Bot. Žurn. 61(6): 873-880.
  Sonchus asper (L.) Hill Sonchus asper (L.) Hill   36 CromoCat 2015 Kuzmanov, B., Georgieva, S. & Nikolova, M. (1993a). Karyological study of Bulgarian Asteraceae. Vll. Fitologija 44: 16-31.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   CromoCat 2015 Talavera, S., J. A. Devesa & E. F. Galiano. (1984). Notas cariosistemáticas sobre plantas norteafricanas. I. Compositae. Candollea 39: 271-280.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Barber, H. N. (1941a). Spontaneus hybrids between Sonchus asper and S. oleraceus. Ann. Bot. (London) 5: 375-377.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Mulligan, G. A. (1957). Chromosome numbers of Canadian weeds. I. Canad. J. Bot. 35: 779-789.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Nishioka, T. (1958). Karyotype analysis in Japanese Cichorieae. II. Jap. J. Genet. 33: 65-68.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Rutland, J. P. (1941). The Merton Catalogue. A list of chromosome numbers of British plants. New Phytol. 40(3): 210-214.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Wulff, H. D. (1939c). Chromosomenstudien an der schleswig-holsteinischen Angiospermen-Flora. IV. Ber. Deutsch. Bot. Ges. 57: 424-431.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   CromoCat 2015 Subramanyam, K. & N. P. Kamble. (1967). Reports [In Löve, A. (ed.), IOPB chromosome numbers reports XII]. Taxon 16(4): 341-350.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9 0 CromoCat 2015 Bala, S. & Gupta, R. C. (2011). IAPT/IOPB Chromosome Data 12 Taxon 60:1784-1786
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Den Brand, C., van, van Meel, F. C. M. & Wieffering, J. H. (1979). Reports [In Löve, A. (ed.), IOPB chromosome numbers reports LXIV]. Taxon 28(4): 395-397.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Kuzmanov, B. & Georgieva, S. (1976). Reports [In Löve, A. (ed.), IOPB chromosome numbers reports LIII]. Taxon 25(4): 500.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Strid, A. & R. Franzén. (1981). Reports [In Löve, A. (ed.), IOPB chromosome numbers reports LXXIII]. Taxon 30(4): 829-842.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Vogt, R. & C. Oberprieler (1993a). Chromosome numbers of North African phanerogams. I. Fl. Medit. 3: 187-210.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   36 CromoCat 2015 Kuzmanov, B. & Georgieva, S. (1980). Reports [In Löve, A. (ed.), IOPB chromosome numbers reports LXIX]. Taxon 29(5): 715.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill 9   CromoCat 2015 Gill, L. S. (1978a). Reports [In Löve, A. (ed.), IOPB chromosome numbers reports LX]. Taxon 27(2/3): 223-231.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill   18 CromoCat 2015 Labadie, J. P. (1976). Reports [In Löve, A. (ed.), IOPB chromosome numbers reports LIV]. Taxon 25(5/6): 636-639.
!   Sonchus asper (L.) Hill Sonchus asper (L.) Hill 18   CromoCat 2015 Carr, G. D., King, R. M., Powell, A. M. & Robinson, H. (1999). Chromosome numbers in Compositae. XVIII Amer. J. Bot. 86: 1003-1013.
!   Sonchus asper Sonchus asper (L.) Hill   18 CromoCat 2015 Fernandes, A. & Queirós, M. (1971a). Contribution à la connaissance cytotaxinomique des spermatophyta du Portugal. II. Compositae. Bol. Soc. Brot. 45: 5-122.