, or perennial
or with simple
, with translucent
("pale") and often opaque
, black or reddish ("dark") glands
and sometimes abaxial
) and marginal
. Leaves opposite [or whorled
], sessile or short petiolate
pinnate to palmate [or rarely dichotomous], margin
entire or gland-fringed. Inflorescence cymose
. Flowers bisexual
, homostylous [or heterostylous], stellate
or cupped. Sepals 5 and quincuncial or rarely 4 and decussate, unequal or equal, free
or partly united
. Petals (4 or) 5, contorted, golden to lemon yellow [or rarely white], abaxially sometimes tinged or veined red, persistent
or deciduous after anthesis
, usually asymmetric
. Stamens in [4 or]5 fascicles, free and antipetalous
, or some united to form apparently 4 or 3 fascicles with compound
, or irregular and apparently not fasciculate, persistent or deciduous, each single fascicle with up to 70[-120] stamens; filaments
slender, free from nearly base
[or to 2/3 united] or apparently completely free; anthers
or ± basifixed
, dehiscing longitudinally, with gland
fascicles (fasciclodes) absent [very rare]. Ovary 3-5-loculed with axile
placentae or ± completely 1-loculed with (2 or) 3[-5] parietal
placentae, each placenta with [2 or] few to many ovules; styles (2 or) 3-5, free or partly to completely united, ± slender; stigmas small or ± capitate. Fruit a septicidal
capsule or rarely ± indehiscent, valves
often with oil-containing vittae or vesicles
. Seeds small, often carinate
or narrowly unilaterally winged
; testa variously sculptured
, not arillate
[very rarely carunculate]; embryo slender, straight, with distinct
About 460 species: almost cosmopolitan except for arctic and desert areas and most of the lowland tropics; 64 species (33 endemic) in China.
Habit: Semi-evergreen . Small, rounded , dense shrub with stiff, erect stems. Grows larger in warmer areas.
Care: Shear after flowering to encourage reblooming. Follow a regular watering schedule during the first growing season to establish an extensive root system . Feed regularly during the growing season with a general purpose fertilizer . Prune annually in late winter to promote vigorous new growth.
Culture: Space 18-36" apart. Likes cool areas.
Soil: Prefers organic soil. Needs well-drained soil. Good for dry soils.
Sunlight: Sun Exposure: Full sun to part shade.
Temperature: Cold Hardiness: 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b. (map)
- Whittaker & Margulis,1978
- Haeckel, 1866
- Cavalier-Smith, 1981
- Sinnott, 1935 ex Cavalier-Smith, 1998
- Vascular Plants
- Kenrick & Crane, 1997
- Brongniart, 1843
- Takhtajan, 1967
- Superorder: Theanae () - Thorne Ex Reveal, 1993
- Subclass: Rosidae () - Takhtajan, 1967
- Class: Spermatopsida () - Brongniart, 1843
- Infraphylum: Radiatopses () - Kenrick & Crane, 1997
- Subphylum: Euphyllophytina ()
- Phylum: Tracheophyta () - Sinnott, 1935 ex Cavalier-Smith, 1998 - Vascular Plants
- Subkingdom: Viridaeplantae () - Cavalier-Smith, 1981
- Kingdom: Plantae () - Haeckel, 1866 - Plants
Publishing author : Aiton Publication : Hortus Kewensis 1789 (7 Aug. - 1 Oct. 1789)
Members of the genus Hypericum
ZipcodeZoo has pages for 124 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them:
H. acutifolium (Sharpleaf St. Johnswort) · H. adpressum (Creeping St. Johnswort) · H. anagalloides (Tinker's Penny) · H. androsaemum (Sweet Amber) · H. androsaemum L. 'Gladys Brabazon' (Sweet Amber) · H. androsaemum 'Albury Purple' (Sweet Amber) · H. androsaemum 'Esm Cho' (Tutsan 'esm Cho') · H. androsaemum 'Esm Española' (Tutsan 'esm Espa) · H. androsaemum 'Esm Greli' (Tutsan 'esm Greli') · H. androsaemum 'Esm Kalua' (Tutsan 'esm Kalua') · H. androsaemum 'Esm Ora' (Tutsan 'esm Ora') · H. androsaemum 'Esm Pin' (Tutsan 'esm Pin') · H. androsaemum 'Esm Re' (Tutsan 'esm Re') · H. androsaemum 'Esm Wet' (Tutsan 'esm Wet') · H. androsaemum 'Glacier' (Sweet Amber) · H. androsaemum 'Glob Dr205' (Tutsan 'glob Dr205') · H. androsaemum 'Glob Lp208' (Tutsan 'glob Lp208') · H. androsaemum 'Golden Tutsan' (Golden Tutsan St. John's Wort) · H. androsaemum 'Verpeacla' (Tutsan 'verpeacla') · H. ascyron (Great St. Johnswort) · H. ascyron gebleri (Great St. Johnswort) · H. boreale (Northern St. Johnswort) · H. brachyphyllum (Coastalplain St. Johnswort) · H. brathys (St. Johnswort) · H. buckleii (Buckley's St. Johnswort) · H. calcycinum (St. John's Wort) · H. calycinum (Aaron's Beard) · H. calycinum 'Brigadoon' (Aaron's Beard) · H. canadense (Lesser Canadian St. Johnswort) · H. canadense boreale (Lesser Canadian St. Johnswort) · H. canariense (Canary Island St. Johnswort) · H. cerastoides (Hypericum) · H. chapmanii (Apalachicola St. Johnswort) · H. cistifolium (Round-Pod St John´s-Wort) · H. concinnum (Goldwire) · H. crux-andreae (Atlantic St. Peter's-Wort) · H. cumulicola (Highlands Scrub Hypericum) · H. densiflorum (Bushy St. Johnswort) · H. denticulatum (Coppery St. Johnswort) · H. diosmoides (Puerto Rico St. Johnswort) · H. dissimulatum (Disguised St. Johnswort) · H. dolabriforme (Straggling St. Johnswort) · H. drummondii (Nits and Lice) · H. edisonianum (Edison Ascyrum) · H. ellipticum (Pale St. Johnswort) · H. elodes (Marsh Hypericum) · H. exile (Florida Sands St. Johnswort) · H. fasciculatum (Peelbark St. Johnswort) · H. forrestii (Forrests St. Johns Wort) · H. fortuneana 'Purple Fountain' (St. Johns Wort) · H. frondosum (Golden St John´s-Wort) · H. frondosum 'Sunburst' (Cedarglade St. John's Wort) · H. galioides (Bedstraw St. Johnswort) · H. gentianoides (Orangegrass) · H. gramineum (Small St John´s-Wort) · H. graveolens (Mountain St. Johnswort) · H. gymnanthum (Claspingleaf St. Johnswort) · H. harperi (Sharplobe St. Johnswort) · H. hookerianum (Hookers St. Johnswort) · H. humifusum (Trailing St John´s-Wort) · H. humifusum suborbiculatum (Trailing St. Johnswort) · H. hypericoides (Reclining St Andrew's Cross) · H. hypericoides hypericoides (St Andrews Cross) · H. hypericoides multicaule (St. Andrew's Cross) · H. hypericoides subsp. multicaule (St. Andrew's Cross) · H. japonicum (Matted St. Johns Wort) · H. kalmianum (Kalm´s St John´s-Wort) · H. kelleri (Hypericum) · H. lancasteri (Lancasters St. Johns Wort) · H. laricifolium (St. Johns Wort) · H. lissophloeus (Smoothbark St. Johnswort) · H. lloydii (Sandhill St. Johnswort) · H. lobocarpum (Fivelobe St. Johnswort) · H. majus (Large St Johnswort) · H. microsepalum (Flatwoods St. Johnswort) · H. mitchellianum (Blue Ridge St. Johnswort) · H. moseranum 'Tri-Color' (Gold Flower) · H. moserianum (St. Johnswort) · H. multicaule (St. Andrew's Cross) · H. mutilum (Dwarf St Johnswort) · H. myrtifolium (Myrtleleaf St. Johnswort) · H. nitidum (Carolina St. Johnswort) · H. nudiflorum (Early St. Johnswort) · H. oblongifolium (St. Johnswort) · H. olympicum f. minus 'Variegatum' (St. Johns Wort) · H. parvulum (Sierra Madre St. Johnswort) · H. patulum Thunb. 'Sungold' (St. Johns Wort) · H. patulum 'Hidcote' (Hidcote Hypericum) · H. patulum 'Variegatum' (St. Johns Wort) · H. pauciflorum (Fewflower St. Johnswort) · H. perforatum (Common St Johnswort) · H. perforatum chinense (Common St Johnswort) · H. polyphyllum (Rockery St. Johns Wort) · H. prolificum (Cinnamon Stick) · H. pseudomaculatum (False Spotted St. Johnswort) · H. pulchrum (Slender St. Johns Wort) · H. punctatum (Spotted St Johnswort) · H. reductum (St Johns Wort) · H. reptans (Creeping St. John's Wort) · H. revolutum keniense (Forest-Primrose)
- Search for Pictures: images.google.com
- Search for Scholarly Articles: Google Scholar
- Search using Scientific Name and Vernacular Names: All the Web | AltaVista Canada | AltaVista | Excite | Google | HotBot | Lycos
- Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books
- A compendium of the Cybele britannica; or British plants in their geographical relations. London, Longmans, Green, Reader & Dyer, 1870. url .
- A flora of the English Lake District. London, G. Bell, 1885. url .
- A flora of the north-east of Ireland: including the Phanerogamia, the Cryptogamia vascularia, and the Muscineae / by Samuel Alexander Stewart and Thomas Hughes Corry. [Belfast]: Belfast Naturalists' Field Club; 1888. url p. 274, p. 330.
- A new British flora: British wild flowers in their natural haunts / described by A. R. Horwood. With sixty-four plates in colour representing 350 different plants, from darwings by J. N. Fitch and many illustrations from photographs. London: Gresham, 1919. url p. 44.
- A practical guide to garden plants, containing descriptions of the hardiest and most beautiful annuals and biennials, hardy herbaceous and bulbous perennials, hardy water and bog plants, flowering and ornamental trees and shrubs, conife London;Longmans, Green, 1901. url p. 266.
- Alien flora of Britain. London, West, Newman, 1905. url p. 42.
- An encyclopaedia of trees and shrubs: being the Arboretum et fruticetum britannicum abridged: containing the hardy trees and shrubs of Britain, native and foreign, scientifically and popularly described; with their propagation, culture, by J. C. Loudon. London: F. Warne; 1869. url p. 77.
- An encyclopædia of gardening; comprising the theory and practice of horticulture, floriculture, arboriculture, and landscape-gardening, including all the latest improvements; a general history of gardening in all countries; and a By J.C. Loudon. .. illustrated with many hundred engravings on wood by Branston. London: Printed for Longman, Rees, Orme, Brown, and Green, 1827. url p. 897.
- Beeton's Dictionary of everyday gardening. .. to which is added a monthly calendar of garden work throughout the year. London, Ward, Lock, 1909. url p. 210.
- Bibliographical index to North American botany; or, Citations of authorities for all the recorded indigenous and naturalized species of the flora of North America, with a chronological arrangement of the synonymy. by Sereno Watson. Washington, Smithsonian Institution, 1878. url , p. 126.
- Botanical names for English readers / by Randal H. Alcock. London: L. Reeve, 1876. url p. 189.
- Bulletin of the British Museum (Natural History). London: The Museum, 1951-1992. url p. 318.
- Catalogue of the trees and shrubs in the arboretum and botanic garden at the Central Experimental Farm, Ottawa, Ontario, Canada by Wm. Saunders and W.T. Macoun. Ottawa: Govt. Print. Bureau, 1899. url .
- Contributions towards a Cybele hibernica, being outlines of the geographical distribution of plants in Ireland. Dublin.E. Ponsonby, 1898. url .
- Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers and ornamental plants sold in the United by L. H. Bailey. .. assisted by William Miller. .. and many expert cultivators and botanists. London: The Macmillan company, 1909. url p. 791.
- English botany, or, coloured figures of British plants / edited by John T. Boswell Syme; the popular portion by Mrs. Lankester; the figures by J. Sowerby, J. de C. Sowerby, J.W. Salter, and John Edward Sowerby. London: G. Bell, 1873. url p. 145, p. 146.
- Flora Malesiana. general editor, C.G.G.J. van Steenis. Djakarta: Noordhoff-Kolff, 1950- url .
- Flora vectensis: being a systematic description of the phænogamous or flowering plants and ferns indigenous to the Isle of Wight. London, W. Pamplin, 1856. url .
- Garden flowers: how to cultivate them. A treatise on the culture of hardy ornamental trees, shrubs, annuals, herbaceous and bedding plants. By Edward Sprague Rand, jr. Boston: J. E. Tilton and Company, 1866. url p. 203.
- Gardening for amateurs; a simple, complete, and practical guide for garden lovers, edited by H. H. Thomas. Illustrated by twenty-four coloured plates and many hundreds of photographs and sketches. New York: Funk and Wagnalls company,  url p. 911.
- Handbook of hardy trees, shrubs, and herbaceous plants. .. Based on the French work of Messrs. Decaisne and Naudin. ..entitled 'Manuel de l'amateur des jardins, ' and including the original woodcuts by Riocreux and Leblanc. Boston, Estes & Lauriat, 1873. url .
- Journal of the New York Botanical Garden. 5 1904 Lancaster, Pa.: Published for the Garden by the New Era Printing Co., 1900- url p. 144.
- Nicholson, G. The illustrated dictionary of gardening: a practical and scientific encyclopædia of horticulture for gardeners and botanists /edited by George Nicholson; assisted by J.W.H. Trail. .. and J. Garrett. .. 9 1884 London: L.U. Gill, -88. url p. 454.
- Proceedings and transactions of the South London Entomological & Natural History Society. London: The Society. url p. 29.
- Proceedings of the Entomological Society of Washington. Washington, etc.: Entomological Society of Washington url p. 125, p. 14, p. 305, p. 325.
- The Annals and magazine of natural history; zoology, botany, and geology being a continuation of the Annals combined with Loudon and Charlesworth's Magazine of Natural History. London, Taylor and Francis, Ltd. url p. 363, p. 364, p. 364, p. 365, p. 365, p. 42, p. 52.
- The Canadian horticulturist [monthly] St. Catharines, E.S. Leavenworth. url p. 256.
- The Garden: an illustrated weekly journal of gardening in all its branches. London: [s.n., url p. 100, p. 132, p. 140, p. 170, p. 308, p. 360, p. 444, p. 450, p. 480.
- The Gardeners' chronicle and agricultural gazette. London: published for the proprietors, 1844-1873. url p. 1044, p. 1088, p. 136.
- The Gardeners' chronicle: a weekly illustrated journal of horticulture and allied subjects. London: [Gardeners Chronicle], 1874-1955. url p. 106, p. 164, p. 208, p. 240, p. 254, p. 336, p. 421, p. 424, p. 54, p. 60.
- The Illustrated dictionary of gardening: a practical and scientific encyclopaedia of horticulture for gardeners and botanists / edited by George Nicholson. ..; assisted by J.W.H. Trail. .. and J. Garrett. ... London: L. Upcott Gill; 1887-1889. url p. 454.
- The Magazine of horticulture, botany, and all useful discoveries and improvements in rural affairs. Boston: Hovey and Co., 1837- url p. 357.
- The Naturalist. 1894 [Doncaster: Yorkshire Naturalists' Union], 1874- url p. 140, p. 293.
- The Scientific proceedings of the Royal Dublin Society. Dublin: The Society, 1877- url p. 61.
- The book of hardy flowers; a simple and complete descriptive guide to the cultivation in gardens of the trees and shrubs, perennial and annual flowers, that are hardy, or are suitable for planting out-of-doors in summer in temp Ed. by H. H. Thomas. .. Beautifully illustrated with thirty-two direct color photographs by H. Essenhigh Corke and sixty-four half-tone plates. 1915 New York, Funk & Wagnalls company; [etc., etc.] url p. 227.
- The book of shrubs, by George Gordon. London andJ. Lane, 1903. url .
- The book of shrubs. London, J. Lane, 1903 url .
- The florist, fruitist, and garden miscellany. London: Chapman and Hall, 1852- url p. 206.
- The gardener's magazine and register of rural & domestic improvement. London: Longman, Rees, Orme, Brown and Green, 1826-1844. url p. 23.
- The identification of trees & shrubs; how to recognize, without previous knowledge of botany, wild or garden trees and shrubs native to the north temperate zone, with 2, 500 diagrams made by the author. New York, Dutton url p. 158.
- The journal of the Horticultural Society of London. London, [England]: Published for the Society, by Longman and Co., 1846-1855. url p. 126.
- The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States a Illustrated with colored plates, four thousand engravings in the text, and ninety-six full-page cuts. New York, Macmillan, 1919 [c1914] url p. 1632.
- Trees and shrubs hardy in the British Isles / by W. J. Bean. London: J. Murray, 1916. url p. 637.
- Trees and shrubs, hardy in the British isles. LondonJ. Murray1914 url p. 637.
- Trees and shrubs; an abridgment of the Arboretum et fruticetum britannicum: containing the hardy trees and shrubs of Britain, native and foreign, scientifically and popularly described; with their propagation, culture LondonF. Warne1875 url p. 75, p. 77.
- Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 31, 2012.
- Biodiversity Heritage Library NamebankID: 5860117
- Global Biodiversity Information Facility Taxonkey: 15368808
- Globally Unique Identifier: urn:lsid:ipni.org:names:433391-1
- International Plant Names Index (IPNI) ID: 101170-3
- Zipcode Zoo Species Identifier: 745627