@article {1003,
	title = {Topaz: Polska odmiana dziurawca zwyczajnego (Hypericum perforatum L.) (Topaz: the Polish variety of St. John Wort (Hypericum perforatum L.).)},
	journal = {Herba Pol.},
	volume = {42},
	number = {part 3},
	year = {1996},
	note = {Pol, Summary language(s): EnGeog=1KBD, Royal Botanic Gardens, Kew.},
	pages = {140-143 (1996) -},
	keywords = {Systematics: ANGIOSPERMAE GUTTIFERAE: HYPERICUM, Poland},
	author = {Seidler Lozykowska, K and Dabrowska, J}
}
@article {897,
	title = {The distribution and abundance of natural locations of Centaurium umbellatum Gilib., Frangula alnus Mill., Helichrysum arenarium (L.) Moench, and Hypericum perforatum L., in the area of voivodships of Poznan, Konin, Leszno, and Kalisz.},
	journal = {Herba Pol.},
	volume = {23},
	year = {1977},
	note = {Abstr. in Excerpta Bot., A, 33(4): p.281 (1979). Geog=1KBD, Royal Botanic Gardens, Kew.},
	pages = {149 - 154 (1977).},
	keywords = {Systematics: ANGIOSPERMAE COMPOSITAE: HELICHRYSUM},
	author = {Kowal, T and Pic, S and Wesolowska, M and Buk, B and Rydzewska, H}
}
