[Angiosperm Phylogeny Group (2009) An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III. Botanical Journal of the Linnean Society 161(2): 105-121.10.1111/j.1095-8339.2009.00996.x]Search in Google Scholar
[Ashman T. L., Shoen D. J. (1994) How long should a flower live? Nature 371: 788-790.10.1038/371788a0]Search in Google Scholar
[Banaszak J. (1983) Ecology of bees (Apoidea) of agricultural landscape. Polish Ecological Studies 9(4): 421-505.]Search in Google Scholar
[Banaszak J. (1992) Strategy for conservation of wild bees in an agricultural landscape. Agriculture Ecosystems and Environment 40: 179-192.10.1016/0167-8809(92)90091-O]Search in Google Scholar
[Bodnarczuk L. I., Solomacha T. D., Iliasz A. M., Solomacha W. A. (1993) Atlas medonosnich roslin Ukrainy. Urożaj.Kijev. 269 pp..]Search in Google Scholar
[Corbet S. A. (2000) Conserving compartments in pollination webs. Conservation Biology 14: 129-131.10.1046/j.1523-1739.2000.00014.x]Search in Google Scholar
[Delaplane K. S., Mayer D. F. (2000) Crop pollination by bees. CABI Publishing. New York. 344 pp.10.1079/9780851994482.0008]Search in Google Scholar
[Denisow B. (2009a) Pollen production, flowering and insect visits on Euphorbia cyparissias L. and Euphorbia virgultosa Klok. Journal of Apicultural Science 48(1): 50-59.10.3896/IBRA.1.48.1.11]Search in Google Scholar
[Denisow B. (2009b) Factors determining diurnal dynamics of blooming of chosen plants species. Acta Agrobotanica 62(1): 83-89.10.5586/aa.2009.010]Search in Google Scholar
[Denisow B. (2011) Pollen production of selected ruderal plant species in the Lublin area. University of Life Sciences Press. Lublin. 86 pp.]Search in Google Scholar
[Faegri K., van der Pijl L. (1979) The principles of pollination ecology. 3rd rev. ed. Pergamon Press. Oxford. 244 pp.10.1016/B978-0-08-023160-0.50020-7]Search in Google Scholar
[Fahn A. B. (1988) Secretory tissues in vascular plants.New Phytologist 108: 229-257.10.1111/j.1469-8137.1988.tb04159.x33873942]Search in Google Scholar
[Gluchov M. (1950) Vażniejszyje miedonosnyje rastienija i sposoby ich razviedienija. Gosudar. Izdat. Selskochoz. Lit., Moskva. 512 pp.]Search in Google Scholar
[Goldenberg D. M., Zobel D. B. (1997) Allocation, growth and estimated population structure of Corydalis aquaegelidae, a rare riparian plant. Northwest Science 71: 196-204.]Search in Google Scholar
[Goulson D. (1999) Foraging strategies of insects for gathering nectar and pollen, and implications for plant ecology and evolution. Perspectives in Plant Ecology, Evolution and Systematics 2(2): 185-209.10.1078/1433-8319-00070]Search in Google Scholar
[Heinrich B., Raven P. H. (1972) Energetics and pollination ecology. Science 176: 597-602.10.1126/science.176.4035.59717778157]Search in Google Scholar
[Heywood V. H. (1985) Flowering plants of the world. Croom Helm. London and Sydney. 336 pp.]Search in Google Scholar
[Higashi S. M., Ohara H., Arai H., Matsuo K. (1988) Robberlike pollinators: overwintered queen bumble bees foraging on Corydalis ambigua. Ecological Entomology 13: 411-418.10.1111/j.1365-2311.1988.tb00373.x]Search in Google Scholar
[Jabłoński B. (2002) Notes on the method to investigate nectar secretion rate in flowers.Journal of Apicultural Science 46(2): 117-125.]Search in Google Scholar
[Jabłoński B., Szklanowska K. (1997) Wpływ niektórych czynników pogody na kwitnienie, nektarowanie, pylenie i oblot przez owady entomofilnych roślin uprawnych. In: Biologia kwitnienia, nektarowania i zapylania roślin. 1]Search in Google Scholar
[Ogólnopolska Konferencja Naukowa. Lublin - Poland. 13-14 listopada 1997: 53-58. ]Search in Google Scholar
[Kołtowski Z. (2006) Wielki Atlas Roślin Miododajnych. Wydanie Rzeczpospolita. Warszawa. 327 pp.]Search in Google Scholar
[Kudo G., Ida T. Y. (2013) Early onset of spring increases the phenological mismatch between plants and pollinators. Ecology 94: 2311-2320. DOI:10.1890/12-2003.110.1890/12-2003.124358716]Search in Google Scholar
[Lipiński M. (2010) Pożytki pszczele. Zapylanie i miododajność roślin. IV ed. PWRiL Warszawa. 320 pp.]Search in Google Scholar
[Masierowska M. (2012) Floral phenology, floral rewards and insect visitation in an ornamental species Geranium platypetalum Fisch. & C. A. Mey., Geraniaceae. Acta Agrobotanica 65(2): 23-36.10.5586/aa.2012.055]Search in Google Scholar
[Matuszkiewicz W. (2012) Przewodnik do oznaczania zbiorowisk roślinnych Polski. PWN. Warszawa. 536 pp.]Search in Google Scholar
[Olesen J. M. (1996) From naïveté to experience: Bumblebee queens (Bombus terrestris) foraging on Corydalis cava (Fumariaceae). Journal of the Kansas Entomological Society 69(4): 274-286.]Search in Google Scholar
[Rutkowski L. (2004) Klucz do oznaczania roślin naczyniowych Polski niżowej. Wydawnictwo Nauk PWN. Warszawa. 814 pp.]Search in Google Scholar
[Stanisz A. (1996) Przystępny kurs statystyki z zastosowaniem Statistica na przykładach z medycyny. Statsoft Polska. Kraków. 359 pp.]Search in Google Scholar
[Stawiarz E., Wróblewska A. (2010) Melisopalinological analysis of multifloral honeys from the Sandomierska Upland area of Poland. Journal of Apicultural Science 54(1): 65-75.]Search in Google Scholar
[Szklanowska K. (1973) Bory jako baza pożytkowa pszczół. Pszczelnicze Zeszyty Naukowe 17: 51-85.]Search in Google Scholar
[Szklanowska K. (1979) Nektarowanie i wydajność miodowa ważniejszych roślin runa liściastego. Pszczelnicze Zeszyty Naukowe 23: 123-130.]Search in Google Scholar
[Teper D. (2006) Food plants of Bombus terrestris L. as detarmined by pollen analysis of faeces. Journal of Apicultural Science 50(2): 101-108.]Search in Google Scholar
[Wasiak A. (2013) Raport o stanie lasów w Polsce. Dyrekcja Generalna Lasów Państwowych. Centrum Informacyjne Lasów Państwowych. Warszawa. 85 pp. Available at: http://bip.lasy.gov.pl/pl/bip/px_~raport_o_stanie_lasow_2011.pdf?page_opener=http%3A%2F%2Fbip.lasy.gov.pl%2Fpl%2Fbip%2Fraporty_i_p ]Search in Google Scholar
[Yasaka M., Nishiwaki Y., Konno Y. (1998) Plasticity of flowers longevity in Corydalis ambigua. Ecological Research 13: 211-216.10.1046/j.1440-1703.1998.00259.x]Search in Google Scholar
[Zhang Y. W., Yu Q., Zhao J. M., Guo Y. H. (2009) Differential effects of nectar robbing by the same bumble-bee species on three sympatric Corydalis species with varied mating systems. Annals of Botany 104: 33-39.10.1093/aob/mcp104270672619465751]Search in Google Scholar
[Zych M., Stpiczyńska M. (2012) Neither protogynous nor obligatory out-crossed: pollination biology and breeding system of the European Red List Fritillaria meleagris L. (Liliaceae). Plant Biology (Stuttgard)14: 285-294. 10.1111/j.1438-8677.2011.00510.x21972995]Search in Google Scholar