{{Short description|Species of flowering plant in the St John's wort family}} {{Speciesbox | image = Hypericum kouytchense (4854539107).jpg | genus = Hypericum | parent = Hypericum sect. Ascyreia | species = kouytchense | authority = H.Lév.<ref name = TPL>{{cite web | url= http://www.theplantlist.org/tpl1.1/record/kew-2858340 | title= Hypericum kouytchense | publisher= The Plant List |access-date=9 March 2018}}</ref><ref name = IPNI>{{cite web | url= http://www.ipni.org/ipni/idPlantNameSearch.do?id=433539-1&back_page=%2Fipni%2FeditSimplePlantNameSearch.do%3Ffind_wholeName%3Dhypericum%2Bkouytchense%26output_format%3Dnormal | title= Hypericum kouytchense | publisher = International Plant Names Index | access-date = 9 March 2018 }}</ref> }}
'''''Hypericum kouytchense''''', the '''large-flowered St John's wort''', is a species of flowering plant in the family Hypericaceae, native to Western China. Growing up to {{convert|3|ft|m|abbr=on}} tall and {{convert|5 |ft|m|abbr=on}} wide, it is a semi-evergreen rounded shrub with blue-green leaves and large yellow flowers with prominent stamens, appearing in midsummer.<ref name = MBG>{{cite web | url = http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=279225&isprofile=0& | title = ''Hypericum kouytchense'' | publisher = Missouri Botanical Garden| access-date = 9 March 2018}}</ref> Flowers are followed by red seed capsules in autumn. Where conditions are favourable it can retain its leaves all year.
The Latin specific epithet ''kouytchense'' is a westernisation of Guizhou,<ref name = MBG/> a southwestern province of China identified as a hotspot for biodiversity.
This plant, which is hardy down to {{convert|-15 |C|F|abbr=on}}, is cultivated in temperate regions. In the UK, it has gained the Royal Horticultural Society's Award of Garden Merit.<ref name = RHSPF>{{cite web | url= https://www.rhs.org.uk/Plants/9013/i-Hypericum-kouytchense-i/Details | title = RHS Plantfinder - ''Hypericum kouytchense'' | access-date=9 March 2018}}</ref><ref>{{cite web | url= https://www.rhs.org.uk/plants/pdfs/agm-lists/agm-ornamentals.pdf | title = AGM Plants - Ornamental | date = July 2017 | page = 52 | publisher = Royal Horticultural Society | access-date = 9 March 2018}}</ref> It has been reported as invasive in the U.S. state of Hawaii.<ref>{{cite web | url = https://landscapeplants.oregonstate.edu/plants/hypericum-kouytchense | title = Landscape Plants: ''Hypericum kouytchense'' | publisher = Oregon State University, College of Agricultural Sciences, Department of Horticulture | access-date = 9 March 2018}}</ref>
==References== {{Reflist}} <gallery> File:Hypericum kouytchense (4855158244).jpg File:Hypericum kouytchense (4855158432).jpg </gallery> {{Taxonbar|from=Q15238807}}
Category:Flora of China kouytchense