The section Adenosepalum of genus Hypericum contains thirty species and two hybrids, as well as five recognized subspecies, in four subsections. The section was described by French botanist Édouard Spach and its type species is Hypericum montanum. Species in Adenosepalum are found in Europe, Russia, the Caucasus, and Morocco. They are shrubs, shrublets, and herbs that grow to be 2.5 meters in height with glabrous or simple hairs, black glands on their leaves, which are placed opposite or are 3-whorled.
Species Subsection or hybridBinomial and common nameAuthorTypeHabitatDistributionMapImage AdenosepalumH. annulatumMoris1827Perennial herbBalkans, Saudi Arabia, East AfricaH. annulatum subsp. afromontanum(Bullock) N.RobsonPerennial herbEthiopia, Kenya, Tanzania, UgandaH. annulatum subsp. annulatumPerennial herbBosnia & Herzegovina, Italy, Balkans, SwitzerlandH. annulatum subsp. intermedium(Steud. ex A.Rich.) N.RobsonPerennial herbNortheast Africa, Arabian PeninsulaH. athoumBoiss. & Orph.1867Perennial herbRock crevices, rocky places in shadeGreeceH. atomariumBoiss.1827Perennial herbStony places near streams, damp shadeGreece, Turkey, Portugal (Naturalized)H. cuisiniiBarbey1885Perennial herbNear springs, calcareous rock fissuresGreece, TurkeyH. delphicumBoiss. & Heldr.1854Perennial herbDamp & shady areas around rocksGreeceH. lanuginosum (Downy St. John's Wort)Lam.1797Perennial herbDamp & shady areas around rocksMiddle East, Turkey, CyprusH. montanum (Pale St. John's Wort)L.1755Perennial herbWoods, thickets, gravelly soilsEurasia, MoroccoH. reflexumL.f.1782ShrubDamp cliffs & walls, around springs & rocky streamsCanary Islands AethiopicaH. abilianumN.Robson1980SubshrubAmong grass and low shrubsAngolaH. aethiopicumThunb.1800Perennial herbOpen grasslands, seasonal swamps, bare areasSouthern AfricaH. aethiopicum subsp. aethiopicumH. aethiopicum subsp. sonderi(Bredell) N.RobsonH. afrumLam.1797Perennial herbMarshes, streamsides, damp moorsTunisia, AlgeriaH. conjungensN.Robson1958Shrub/subshrubCentral AfricaH. glandulosum (Malfurada del Monte)Aiton1789ShrubCanary Islands, MadeiraH. kiboënseOliv.1887Shrub/SubshrubUganda, Kenya, Tanzania CaprifoliaH. caprifoliumBoiss.1838Perennial herbWestern SpainH. coadunatumChr. Sm.1825Subshrub/Perennial herbCanary IslandsH. collenetteaeN.Robson1993Subshrub/Perennial herbSaudi ArabiaH. naudinianumCoss. & Durieu1855Perennial herbNear streamsides & waterfallsMorocco, AlgeriaH. psilophytum(Diels) Maire1935Perennial herbMorocco, AlgeriaH. pubescensBoiss.1838Perennial herbSouthern Iberia, North AfricaH. scrugliiBacch., Brullo & Salmeri2010Perennial herbSardiniaH. sinaicumHochst. ex Boiss.1867Perennial herbEgypt, Arabian PeninsulaH. somalienseN.Robson1958Perennial herbSomaliaH. tomentosumL.1753Perennial herbWestern Mediterranean Huber-MorathiiH. decaisneanumCoss. & Daveau1889Perennial herbWestern LibyaH. formosissimumTakht.1940Perennial herbAmong limestone rocksArmenia, Azerbaijan, TurkeyH. huber-morathiiN.Robson1967Perennial herbAmong limestone rocksSouthwest TurkeyH. minutumP.H.Davis & Poulter1954Perennial herbSouthwest TurkeyH. sechmeniiOcak & O.Koyuncu2009Perennial herbAmong limestone rocksCentral Turkey HybridH. × joerstadii (H. glandulosum × H. reflexum)Lid1968Intermediate ShrubCanary IslandsH. pubescens × tomentosumMorocco, Western Spain
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