Literature

Authors	Year	Title
N. K. B. Robson	1981	Hypericum specimens collected by Roy Lancaster in south-western China, October 1980.
I. Hagemann, Meusel H.	1984	Hypericum triquetrifolium Turra, ein Wurzelspross-Geophyt Wuchsform und Verbreitung. (Hypericum triquetrifolium Turra, a perennial with shoot bearing roots, growth form and distribution.)
N. K. B. Robson	1972	Hypericum x destangsii.
N. K. B. Robson	1973	Hypericum.
N. K. B. Robson	1972	Identification lists of Malaysian specimens: 46. Hypericum.
D. E. Culwell	1981	Interspecific hybridization between Hypericum graveolens and H. mitchellianum.
M. P. Safonova, Safonov, V. I., Tikhonova, B. B.	1984	Introduktsionnoe i biokhimicheskoe issledovanie vidov zveroboya na Sakhaline.
G. C. S. Clarke	1976	Irregular pollen grains in some Hypericum species.
A. M. Gasanov	1975	K ekologicheskoi anatomii Hypericum perforatum L. flory Azerbaidzhana.
O. N. Dubovik	1981	Krym'sko-Novorosiis'ki vydy rodu Hypericum L. (The Crimean-Novorosiisk species of the genus Hypericum L.)
J. Saintenoy-Simon	1985	La distribution et l'ecologie d'Hypericum androsaemum L. en Belgique.
J. Duvigneaud	1979	Le groupe d'Hypericum maculatum en Belgique et les regions voisines. Quelques remarques.
S. J. P. Waters, Pigott C. D.	1971	Mineral nutrition and calcifuge behaviour in Hypericum.
D. J. B. Killick	1979	Notes on African plants: Clusiaceae. Omission of Hypericum oligandrum from the Flora of Southern Africa.
N. K. B. Robson	1973	Notes on Malesian species of Hypericum (Guttiferae) Florae Malesianae Praecursores: 52.
N. K. B. Robson	1977	Notes on some Nepalese and Indian Hypericum.
N. K. B. Robson, Long D. G.	1983	Notes relating to the Flora of Bhutan: 7. Notes on Hypericum L.
P. Bamps	1971	Notes sur les Guttiferae d'Afrique tropicale.
M. Bugnicourt	1971	Notes sur quelques Hypericum de notre region: observations et reflexions.
V. T. Glotova	1978	Osobennosti rosta i razvitiya predstavitelei roda Hypericum.
E. J. Weeda	1984	Over standplaats en indigeniteit van Hypericum canadense L. in Noord-Twente. (Habitat and indigenousness of Hypericum canadense L. in northern Twente.)
N. K. B. Robson	1979	Parallel evolution in African and Mascarene Hypericum.
T. L. Andrienko, Birchenko, V. M., Didukh, Y. P.	1981	Pershi znakhidky Hypericum humifusum L. na Ukrayins'komu polissi. (First occurrences of Hypericum humifusum L. in Ukrainian Polessie.)
G. F. Akhundov, Babaev N. B.	1972	Perspektivy ispol'zovaniya endemichnykh rastenii Azerbaidzhana v tsvetovodstve.
P. Dupuy, Guedes M.	1975	Placentation and possible partial stachyospory in Hypericum sect. Eremanthe.
M. Barros, Ramos A.	1985	Polen irregular de las especies espanolas de Hypericum sect. Hirtella Stef.
M. Bugnicourt	1971	Polyembryonie resultant de la concrescence de deux ou de plusieurs ovules chez quelques especes du genre Hypericum.
J. Delay	1972	Prospection caryologique en Brenne et Limousin. (A caryological prospection in Brenne and Limousin).
R. C Jimenez	1973	Recherches sur le genre Hypericum L. section Brathys (Mutis ex L.f.) Choisy sous-section Spachium Keller (Guttiferae) These.
E. Banfi	1978	Remarks on the Lombard exotic flora: 1. Hypericum mutilum L. in the Milanese Groana.
W. T. Wang	1979	Species novae Hyperici L. e Sina.
N. K. B. Robson	1977	Studies in the genus Hypericum L. (Guttiferae): 1. Infrageneric classification.
N. K. B. Robson	1981	Studies in the genus Hypericum L. (Guttiferae): 2. Characters of the genus.
N. K. B. Robson	1985	Studies in the genus Hypericum L. (Guttiferae): 3. Sections: 1. Campylosporus to: 6a. Umbraculoides.
P. Adams	1972	Studies in the Guttiferae. 3. An evaluation of some putative spontaneous garden hybrids in Hypericum sect. Myriandra.
L. Z. Gu, Zhang H. B.	1980	Study of the chemical constituents in Hypericum attenuatum Chois.
R. A Nunez	1984	Taxonomia de Hypericum hircinum L. var. Cambessedesii (Cosson ex Barcelo) Ramos.
R. A Nunez	1985	Taxonomia de Hypericum hyssopifolium Chaix y especies relacionadas.
T. Kato	1985	Taxonomical studies on the Hypericum pseudopetiolatum complex 1. Geographical differentiation in the Japan Archipelago.
D. A. Webb, Halliday G.	1973	The distribution, habitat and status of Hypericum canadense L. in Ireland.
R. Ornduff	1979	The genetics of heterostyly in Hypericum aegypticum.
J. M. Gillett, Robson N. K. B.	1981	The St. John's-wort of Canada (Guttiferae).
Y. Kimura	1980	The type specimen of Hypericum japonicum Thunberg.
G. Wittenberger	1982	Uber das Vorkommen der Unteraten des Tupfelharteus (Hypericum perforatum L.)
A. Ramos	1984	Un hibrido nuevo de Hypericum.
A. J. Healy	1972	Weedy St. John's worts (Hypericum spp.) in New Zealand.
I. Hagemann	1981	Wuchsformenuntersuchungen an balkanischen Hypericum-Sippen. (Investigation of the growth form of Hypericum taxa from the Balkan Peninsula.)
I. Hagemann	1983	Wuchsformenuntersuchungen an zentraleuropaischen Hypericum- Arten. (Analysis of growth forms of central European Hypericum species.)
N. Robson	1983	Yellow-flowered St. John's worts.
E. Foerster	1971	Zur Unterscheidung von Hypericum maculatum und H. tetrapterum im blutenlosen Zustand.