List of Hypericum nothospecies explained

The genus Hypericum contains a number of nothospecies, or hybrids created directly from crossing two accepted species to create an intermediate organism that shares properties of both. Many of these hybrid species are used as ornamental or decorative plants.

Nothospecies

Binomial	Common Name	Type	Distribution	Parentage	Image	References
Section Adenosepalum
H. × joerstadiiLid (1968)		Intermediate shrub		H. glandulosum × H. reflexum		^[1] ^[2] ^[3] ^[4] ^[5]
H. pubescens × tomentosum				H. pubescens × H. tomentosum		^[6] ^[7] ^[8]
Section Androsaemum
H. × inodorumMill. (1768)	Tall Tutsan	Deciduous shrub	Corsica, France, Italy, Spain			^[9] ^[10] ^[11] ^[12]
Section Ascyreia
H. kouytchense × calycinumD.Walker		Shrub	Only in cultivation	H. kouytchense × H. calycinum		^[13]
H. × cyathiflorumN.Robson (1985)		Shrub	Only in cultivation	H. addingtonii × H. hookerianum
H. × dummeriN.Robson (1985)		Shrub	Only in cultivation	H. calycinum × H. forrestii		^[14]
H. × moserianumAndré (1889)		Shrub	Only in cultivation			^[15]
Section Drosocarpium
H. × reinosaeA. Ramos (1983)		Perennial herb		H. perforatum × H. richeri subsp. burseri
Section Graveolentia
H. × mitchellianumRydb. (1927)	Blue Ridge St. John's Wort	Perennial herb		H. graveolens × H. punctatum		^[16] ^[17] ^[18] ^[19] ^[20]
Section Hypericum
H. × desetangsiiLamotte (1874)	Des Etang's St. John's Wort			H. perforatum × H. maculatum		^[21] ^[22] ^[23]
H. × hyugamontanumY. Kimura		Perennial herb	Japan (Kyushu)
H. × laschiiA.Fröhl.			Scandinavia, France, Central Europe			^[24]
H. × mediumPeterm.			Austria, Czech Republic, France, Germany, Romania
Section Oligostema
H. × caesarienseDruce ex N.Robson		Perennial herb	Scotland, Northern England	H. linariifolium × H. humifusum
Section Trigynobrathys
H. × dissimulatumE.P.Bicknell	Disguised St. John's Wort			H. boreale × H. canadense		^[25] ^[26]

Notes and References

1. Web site: Hypericum Tourn. ex L. . Plants of the World Online . 2018-02-05.
2. Web site: BioLib: Biological library. Zicha. Ondrej. www.biolib.cz. cs. 2018-01-25.
3. Book: Bulletin of the Natural History Museum. 2002. Botany Series.
4. Web site: Hypericum L. 2018-03-25. GBIF. Global Biodiversity Information Facility. 2018-04-22.
5. Book: Nurk, Nicolai. Phylogenetic analyses in St. John's wort (Hypericum): Inferring character evolution and historical biogeography. 2011. Berlin. 32, 110. Dissertation. 2018-04-22.
6. Web site: Nomenclature Hypericum online. hypericum.myspecies.info. en. 2018-01-25.
7. Robson. Norman. 1996. Studies in the genus Hypericum L. (Guttiferae) 6. Sections 20. Myriandra to 28. Elodes. Bull. Br. Mus. (Nat. Hist.) Bot.. 26. 75–271. Hypericum MySpecies.
8. Web site: The International Plant Names Index - home page. Barker. Christine. ipni.org. 2018-09-16.
9. Web site: Plants Profile for Hypericum. USDA Plants.
10. Book: Stace, C.A. Hybrid flora of the British isles. Preston. C.D.. Pearman. D.A.. Botanical Society of Britain and Ireland. 2015.
11. Web site: Hypericum. deeproot.co.uk. 2018-07-06.
12. Web site: Bean's Trees and Shrubs. www.beanstreesandshrubs.org. en. 2018-08-07.
13. Web site: Hypericum. 2013. The Plant List. Royal Botanic Gardens, Kew, Missouri Botanical Garden. 19 February 2016.
14. Web site: Hypericum: Royal Horticultural Society. www.rhs.org.uk.
15. Web site: ITIS Standard Report Page: Hypericum. www.itis.gov. 2018-01-13.
16. Book: Systematics and Biodiversity. 2006. 4: 19–98.
17. Book: Bailey, C.. Guide to the Vascular Plants of Tennessee. University of Tennessee press. 2015.
18. Downs. RM. 1972. Hypericum mitchellianum in West Virginia. Castanea. 37. 149.
19. Web site: Lady Bird Johnson Wildflower Center. University of Texas at Austin. 2018-08-06.
20. Web site: Genus: Hypericum. 2009-02-02. NatureServe Explorer. 2018-08-06.
21. Crackles. FE. 1990. Hypericum x desetangsii Lamotte nm. desetangsii in Yorkshire, with special reference to its spread along railways. Watsonia. 18. 63–67.
22. Web site: Plant Finder. Online Atlas of the British and Irish Flora. 2018-06-08.
23. Web site: Hypericum L. [Guttiferae-Hypericoideae]]. Botanical Illustrations. 2018-08-11.
24. Book: Stace, C.A.. Hybridization and the Flora of the British Isles. Academic Press. 1975. London, New York, San Francisco.
25. Web site: Family: Clusiaceae, Genus: Hypericum. davesgarden.com. en. 2018-01-04.
26. Web site: Online Virtual Flora of Wisconsin - Hypericum. wisflora.herbarium.wisc.edu. 2018-11-10.