@book {932,
	title = {The St. John{\textquoteright}s-wort of Canada (Guttiferae).},
	year = {1981},
	note = {En, Summary language(s): FrHypericum spp. Icones, Maps, Chromosome numbers. Geog=3KBD, Royal Botanic Gardens, Kew.},
	pages = {iv, 40p.- illus., maps, chrom. nos., keys.},
	publisher = {National Museums of Canada},
	organization = {National Museums of Canada},
	address = {Ottawa},
	keywords = {Systematics: ANGIOSPERMAE HYPERICACEAE: HYPERICUM},
	author = {Gillett, JM and Robson, NKB}
}
@article {830,
	title = {Studies in the genus Hypericum L.  (Guttiferae).  2.  Characters of the genus.},
	journal = {Bull. Brit. Mus. (Nat. Hist.), Bot.},
	volume = {8},
	year = {1981},
	note = {Includes floral morphology and vasculature, pollen (by G.C.S. Clarke), SEM photos of seeds of 12 spp. (pp.112-14), leaf venation and glands, chromosome numbers, distribution.KBD, Royal Botanic Gardens, Kew.},
	pages = {55-226},
	keywords = {Floral anatomy, Pollen, Hypericaceae, Seeds, Ult_SEM, Venat},
	author = {Robson, NKB}
}
@article {831,
	title = {Hypericum specimens collected by Roy Lancaster in south-western China, October 1980.},
	journal = {Int. Dendrol. Soc. Year Book},
	year = {1981},
	note = {EnGeog=2KBD, Royal Botanic Gardens, Kew.},
	pages = {141 (1980 publ. 1981) -},
	keywords = {Systematics: ANGIOSPERMAE HYPERICACEAE: HYPERICUM},
	author = {Robson, NKB}
}
@article {832,
	title = {Studies in the genus Hypericum L. (Guttiferae): 2. Characters of the genus.},
	journal = {Bull. Brit. Mus. (Nat. Hist.) Bot.},
	volume = {8},
	number = {part 2},
	year = {1981},
	note = {EnIcones - Chromosome numbers. Geog=1 - 7KBD, Royal Botanic Gardens, Kew.},
	pages = {55 - 226 (1981) - illus., chrom. nos., maps.},
	keywords = {Systematics: ANGIOSPERMAE HYPERICACEAE: HYPERICUM},
	author = {Robson, NKB}
}
