Reference

  • R

  • Raab-Straube, E. von (2018) Sapindaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity [link] (accessed 2020-02-26)
  • Rackham, O. (1986) The History of the Countryside, J.M. Dent, London
  • Rackham, O. (2006) Woodlands, HarperCollins, London
  • Radcliffe-Smith, A. (2001) Genera Euphorbiacearum, Royal Botanic Gardens, Kew
  • Raggett, J. (2018) Plant of the Day - Saturday 1 December 2018 [link] (accessed 2019-06-28)
  • Raimondo, F.M. (2008) A new species of Malus (Rosaceae, Maloideae) from Sicily. in Flora Mediterranea 18 5-10 [link] (accessed 2020-05-29)
  • Rammeloo, A. (2016) Emmenopterys henryi, International Dendrological Society [link] (accessed 2019-04-12)
  • Rana, S.K. et al. (2018) Determining bioclimatic space of Himalayan alder for agroforestry systems in Nepal in Plant Diversity 40:1 1-18
  • Ranney, T.G. et al. (2003) ×Schimlinia floribunda (Theaceae): a new intergeneric hybrid between Franklinia alatamaha and Schima argentea in HortScience 38 1198–1200
  • Ranney, T.G. & Fantz, P.R. (2006) ×Gordlinia grandiflora (Theaceae): an intergeneric hybrid between Franklinia alatamaha and Gordonia lasianthus in HortScience 41 1386–1388
  • Raoul, E.F.L. (1844) Choix de Plantes de la Nouvelle-Zélande in Annales des Sciences Naturelles; Botanique 3 113-123 t.2 [link] (accessed 2021-09-16)
  • Raulston, J.C. (1986) Plants in the NCSU Arboretum: Cercis (Redbuds) in Friends of the NCSU Arboretum Newsletter 14 140–145
  • Raulston, J.C. (1987) Some uncommon plants recommended for trial from the NCSU Arboretum evaluations in Friends of the NCSU Arboretum Newsletter 16 178–186
  • Raulston, J.C. (1991) Styrax evaluations in the NCSU Arboretum in Proceedings of the Southern Nurserymen’s Association 36th Annual Research Conference 305–309 1991, Southern Nurserymen’s Association
  • Raulston, J.C. (1992) Styrax in American Nurseryman:November 1 23–36 November 1, 1992
  • Raulston, J.C. (1993) The Chronicles of the NCSU Arboretum, Privately published by J.C. Raulston, Raleigh
  • Raulston, J.C. (1994) 1993–94 Winter hardiness evaluations in the NCSU Arboretum in Proceedings of the SNA Research Conference 39 355–358
  • Raulston, J.C. (1996) The NCSU evaluation of Southwestern US and Mexico native plants in Friends of the Arboretum Newsletter 83–85 July 1996
  • Raulston, J.C., Fairey, J. & Schoenfeld, C. (1995) The NCSU Arboretum evaluation of Southwestern US and Mexico native plants in Proceedings of the SNA Research Conference 40 317–319
  • Ravenna, P. (2000) Nothofagus rutila sp. nov. and the correct author citation of N. nervosa (Fagaceae). in Onira 5:1 1-4
  • Ray, D., Pyatt, G. & Broadmeadow, M. (2002) Modelling the future climatic suitability of plantation forest tree species in Broadmeadow, M. (ed) Climate Change: Impacts on UK Forests 125 151-167, Forestry Commission Bulletin, Forestry Commission, Edinburgh
  • Ray go (2009) Malus spontanea Wikimedia Commons (accessed 2020-05-08)
  • Reeves, J. (2020) UT Gardens January 2020 Plant of the Month: 'Cayenne' Silky Dogwood [link] (accessed 2020-11-03)
  • Rehder, A. (1903) Pterocarya fraxinifolia × stenoptera (hybr. nov.) in Mitteilungen der Deutschen dendrologischen gesellschaft:12 116 [link] (accessed 2019-06-28)
  • Rehder, A. (1910) A New Hybrid Cornus (Cornus rugosa × stolonifera) in Rhodora 12:138 121-124
  • Rehder, A. (1917) The genus Fraxinus in New Mexico and Arizona in Proceedings of the American Academy of Arts and Sciences 53 199–212
  • Rehder, A. (1920) New species, varieties and combinations from the herbarium and the collections of the Arnold Arboretum in Journal of the Arnold Arboretum 2 42-64 [link] (accessed 2020-04-24)
  • Rehder, A. (1920) New species, varieties and combinations from the herbarium and the collections of the Arnold Arboretum in Journal of the Arnold Arboretum 2 42-62 [link] (accessed 2020-06-12)
  • Rehder, A. (1922) New species, varieties and combinations from the herbarium and the collections of the Arnold Arboretum. in Journal of the Arnold Arboretum 3:4 207-224 [link] (accessed 2020-04-21)
  • Rehder, A. (1923) New species, varieties and combinations from the herbarium and the collections of the Arnold Arboretum. 4 107-116 Journal of the Arnold Arboretum (accessed 2020-04-21)
  • Rehder, A. (1926) New species, varieties and combinations from the herbarium and the collections of the Arnold Arboretum in Journal of the Arnold Arboretum 7 22-37 [link] (accessed 2020-05-08)
  • Rehder, A. (1927–1940) Manual of Cultivated Trees and Shrubs Hardy in North America (and many reprints), The MacMillan Co, New York
  • Rehder, A. (1933) Acer sect. Macrantha. Pax emend. Rehd 14 211-222 in Journal of the Arnold Arboretum
  • Rehder, A. (1933) New species, varieties and combinations from the herbarium and the collections of the Arnold Arboretum in Journal of the Arnold Arboretum 14 199-222 [link] (accessed 2020-05-08)
  • Rehder, A. & Wilson, E.H. (1927) An enumeration of the ligneous plants of Anhwei. in Journal of the Arnold Arboretum 8 169-173 [link] (accessed 2020-01-08)
  • Reich, L. (1996) Cornelian Cherry from the Shores of Ancient Greece in Arnoldia 56 2-7
  • Reiche, K.F. (1911) Buddleia globosa in Flora de Chile 6 97-98 Part 1
  • Reid, C. (1913) The Relation of the Present Plant Population of the British Isles to the Glacial Period in Journal of Ecology 1:1 42-26 [link] (accessed 2021-01-21)
  • Reid, E.M. & Chandler, M.E.J. (1933) The London Clay Flora, British Museum (Natural History), London
  • Reid, W. (2010 onwards) Northern Pecans [link] (accessed 2019-11-22)
  • Ren, B. & Liu, J, (2006) Cytological study on Alnus in China in Guihaia 26:4 356-359
  • Ren, B, Xiang, X & Chen, Z (2010) Species identification of Alnus (Betulaceae) using nrDNA and cpDNA genetic markers in Molecular Ecology Resources 10 594-605 [link] (accessed 2019-08-12)
  • Ren, B., Xiang, X. & Chen, Z. (2010) Species identification of Alnus (Betulaceae) using nrDNA and cpDNA genetic markers in Molecular Ecology Resources 10:4 594-605
  • Renner, S.S. (1999) Circumscription and phylogeny of the Laurales: evidence from molecular and morphological data in American Journal of Botany 86 1301–1325
  • Renner, S. S. et al. (2008) Rooting and Dating Maples (Acer) with an Uncorrelated-Rates Molecular Clock: Implications for North American/Asian Disjunctions in Systematic Biology 57:5 795-808
  • Restrepo, G. & Gervais, C. (1994) Chromosome numbers of some Latin American species of Alnus (Betulaceae) in Rhodora 96:885 69-74
  • Reveal, J.L. & Seldin, M.J. (1976) On the identity of Halesia carolina L (Styracaceae) in Taxon 25 123–140
  • Reyes-Diaz, M. et al. (2005) Low temperature responses of Nothofagus dombeyi and Nothofagus nitida, two evergreen species from south central Chile in Tree Physiology 25:11 1389-98
  • RHS (2020) Cornus kousa 'Summer Fun' [link] (accessed 2020-12-08)
  • RHS (2020) RHS Plant Finder, Royal Horticultural Society, London, UK.
  • RHS (2021) Cornus kousa 'Beni-fuji' [link] (accessed 2021-01-12)
  • RHS (2021) Cornus kousa var. chinensis 'Wisley Queen' [link] (accessed 2021-01-12)
  • RHS Trials Office (2010) TRIALS REPORT 2008-2010: Buddleja davidii and its close hybrids., Royal Horticultural Society, Surrey, UK [link]
  • Rice, A. et al. (2015) The Chromosome Counts Database (CCDB) – a community resource of plant chromosome numbers in New Phytologist 206 19-26
  • Rice, G. (2015) Abelia Sunny Charms [link]
  • Rich, E. L. (2004) Investigation of Allelopathy in an Invasive Introduced Tree Species, Norway Maple (Acer platanoides L.), Drexel University, Drexel University
  • Rich, T.C.G. et al. (2010) Whitebeams, rowans and service trees of Britain and Ireland. A monograph of British and Irish Sorbus L. B.S.B.I. Handbook No. 14, Botanical Society of the British Isles, London
  • Rich, T.C.G., Harris, S.A. & Hiscock, S.J. (2009) Five new Sorbus (Rosaceae) taxa from the Avon Gorge, England in Watsonia 27 217–228
  • Rich, T.C.G. & Houston, L. (2006) Sorbus whiteana (Rosaceae), a new endemic tree from Britain in Watsonia 26 1–7
  • Rich, T.C.G. & Proctor, M.C.F. (2009) Some new British and Irish Sorbus L taxa (Rosaceae) in Watsonia 27 207–216
  • Richardson, D.M. (1998) Ecology and Biogeography of Pinus, Cambridge University Press, Cambridge
  • Richer, S. (2017) The site that slipped through the 'Lime Decline' net: A Holocene History of Tilia at Shrawley Wood, Worcestershire, UK in Quaternary Newsletter 141 46-7. [link] (accessed 2020-01-29)
  • Rickett, H.W. (1945) New combinations in Cornus in Bulletin of the Torrey Botanical Club 72 223
  • Riddelsdell, H. J., Hedley, G. W. & Price, W. R. (eds) (1974) Flora of Gloucestershire: phanerogams, vascular cryptogams, charophyta, The Chatford House Press Ltd, Bristol
  • Rieck, I. & Rieck, G. (2020 onwards) Pfingstrosen aus Bad Rappenau [link] (accessed 2020-09-30)
  • Rink, G. (1990) Juglans cinerea L., Butternut in Burns, R.M. & Honkala, B.H. (eds) Silvics of North America 2 386-390, Agriculture Handbooks (No. 654), USDA Forest Service, Washington, DC [link] (accessed 2019-10-01)
  • Ritter, M. (2012) Striving for Diversity: Fragrant Champaca in Pacific Horticulture April 2012 [link] (accessed 2021-10-06)
  • Rix, M. (2007) Pterocarya macroptera var insignis in Curtis’s Botanical Magazine 24 180–185
  • Rix, M. (2013) 770. Acer davidii 30:3 215-221 in Curtis's Botanical Magazine
  • Rix, M. (2016) 842. Acer micranthum 33:3 241-246 in Curtis's Botanical Magazine
  • Rix, M & Jackson, A (2004) Nothofagus moorei in Curtis's Botanical Magazine 21:1
  • Rix, M. & Kirkham, T. (2009) 640. QUERCUS CASTANEIFOLIA: Fagaceae in Curtis's Botanical Magazine 26:1/2 54-47, 59-63 April 2009 [link] (accessed 2020-11-03)
  • Robert, G-N (1838) Plantes phanérogames qui croissent naturellement aux environs de Toulon, Perreymond-Dufort, Brignoles
  • Robertson, K.R. (1976) Cercis: the redbuds in Arnoldia 36 37–49
  • Robertson, K R (1977) Cladrastis: the Yellow-Woods in Arnoldia 37:3 137-150
  • Robertson, K.R. et al. (1991) A synopsis of genera in Maloideae (Rosaceae) in Systematic Botany 16 376–394
  • Robertson, K.R. et al. (1991) A Synopsis of Genera in Maloideae (Rosaceae) in Systematic Botany 16:2 376-394 [link] (accessed 2020-06-25)
  • Robinson, J.P., Harris, S.A. & Juniper, B.E. (2001) Taxonomy of the genus Malus Mill (Rosaceae) with emphasis on the cultivated apple, Malus domestica Borkh in Plant Systematics and Evolution 226 35–58
  • Robinson, M., Marston, J. & Foster, M. (2008) New evergreen magnolias: comments from UK growers in Rhododendrons, Camellias and Magnolias 2008 94–96
  • Robinson, W. (1898) The English Flower Garden (6th Edition), John Murray, London
  • Rodger, D., Stokes, J. & Ogilvie, J. (2006) Heritage Trees of Scotland, The Tree Council
  • Rodriguez-Coombes, M., Coombes, A. & Morales, H. (2004) Quercus insignis Martens & Galeotti: distribution and conservation in International Oaks 15 211–213
  • Rodríguez, R., Matthei, J.O. & Quezada, M. (1983) Flora Arbórea de Chile, Universidad de Concepción, Concepción
  • Roethling, J. (2006) Redbud resurgence in American Nurseryman 203 14–18
  • Rohwer, J.G. (1993a) Lauraceae in Kubitzki, K. (ed) The Families and Genera of Vascular Plants 2 366–391 (q.v.)
  • Rohwer, J.G. (1993b) Moraceae in Kubitzki, K. (ed) The Families and Genera of Vascular Plants 2 438–452 (q.v.)
  • Rojas-Sandoval, J. (2019) Buddleja madagascariensis (smokebush), Cabi, UK [link] (accessed 2020-09-07)
  • Romero Rangel, S., Rojas Zenteno, E.C. & Aguilar Enríquez, M.L. (2002) El género Quercus (Fagaceae) en el Estado de México in Annals of the Missouri Botanical Garden 89 551–593
  • Ronse de Craene, L.P. et al. (2002) Floral anatomy and systematics of Bretschneidera (Bretschneideraceae) in Botanical Journal of the Linnean Society 139 29–45
  • Rose, N. (2013) The Sweet Smell of Spring: Abelia mosanensis in Arnoldia 2013
  • Ross-Davis, A. et al. (2008) Morphological and molecular methods to identify butternut (Juglans cinerea) and butternut hybrids: relevance to butternut conservation in Tree Physiology 28 1127-1133 [link] (accessed 2019-10-01)
  • Ross, E. (1976) The great tree rip-off in Weeds, Trees & Turf October 1976 10-17 [link] (accessed 2019-09-20)
  • Ross, T. & Irons, J. (1997) Australian Plants: A Guide to their Cultivation in Europe, The Estate of Thomas Ross, Frankfurt-am-Main
  • Rosser, C. (1993) The Banksias Two volumes, Monash University, Melbourne
  • Rouse, G.D. (1989) Elms on the Royal Bath & West Showground in Quarterly Journal of Forestry 83 170–172
  • Rowden, A. et al. (2004) Conservation genetics of Mexican beech, Fagus grandifolia var mexicana in Conservation Genetics 5 475–484
  • Roxburgh, W. (1832) Flora Indica; or, Descriptions of Indian Plants 3, Serampore
  • Royal Botanic Garden Edinburgh (1997 onwards) Multisite search [link] (accessed 2020-05-08)
  • Royal Botanic Garden Edinburgh (2007–2008) Catalogue of the living collections (search for individual taxa) [link] (accessed 2008-07-25)
  • Royal Botanic Garden Edinburgh (2018) Catalogue of the Living Collections [link] (accessed 2019-04-19)
  • Royal Botanic Garden Edinburgh (2020) The Endemic Plants of Chile [link] (accessed 2020-10-04)
  • Royal Botanic Gardens, Kew (1895) Handlist of Trees and Shrubs 19
  • Royal Botanic Gardens, Kew (2008) Phenology at Kew Information sheet K36 [link] (accessed 2008-12-05)
  • Royal Botanic Gardens, Kew (2019 onwards) Plants of the World Online [link] (accessed 2019-07-19)
  • Royal Botanic Gardens, Kew (2020) Electronic Plant Information Centre (ePIC) Royal Botanic Gardens, Kew
  • Royal Botanic Gardens Victoria (2020) HORTFLORA: Horticultural Flora of South-eastern Australia [link]
  • Royal Horticultural Society (1997) The Rhododendron Handbook 1998, The Royal Horticultural Society, London [link]
  • Royal Horticultural Society (2016 onwards) Horticultural Database search [link] (accessed 2020-02-21)
  • Royal Horticultural Society (2018) The Plant Finder
  • Royal Horticultural Society (2020) Ornamentals – AGM plants, Royal Horticultural Society, London, UK [link] (accessed 2020-09-14)
  • Royal Horticultural Society (2021) Apples [link] (accessed 2021-04-12)
  • Royal Horticultural Society Advice (2021) Holm oak leaf-mining moths. [link] (accessed 2021-01-22)
  • Royal Horticultural Society Learning (2008) Gardening in the global greenhouse: planting opportunities and challenges [link] (accessed 2008-05-26)
  • Royal New Zealand Institute of Horticulture (2020 onwards) Duncan and Davies Nursery Catalogues [link] (accessed 2021-09-02)
  • Rozefelds, A.C. & Barnes, R.W. (2002) The systematic and biogeographical relationships of Ceratopetalum (Cunoniaceae) in Australia and New Guinea in International Journal of Plant Sciences 163 651–673
  • Rubin, K. (2016) The Metasequoia Mystery in Landscape Architecture Magazine [link] (accessed 2021-06-08)
  • Rudawska, M. et al. (2018) Mycorrhizal associations of the exotic hickory trees, Carya laciniosa and Carya cordiformis, grown in Kórnik Arboretum in Poland. in Mycorrhiza 28 549-560 [link] (accessed 2019-11-13)
  • Rule, K. (1991) Two new subspecies within Eucalyptus leucoxylon F Muell. and notes on that species in Muelleria 7 389–403
  • Rule, K. (1992) Two new species of Eucalyptus (Myrtaceae) in south-eastern Australia in Muelleria 7 497–505
  • Rule, K. (1994) Three new endemic subspecies of snow gum for Victoria and notes on the taxonomy of the informal superspecies Pauciflora in Pryor, L.D. & Johnson, L.A.S. Muelleria 8 223–233
  • Rule, K. (1998) A new, rare Victorian subspecies of Eucalyptus leucoxylon F Muell in Muelleria 11 133–136
  • Rumsey, F., Russell, S. & Wiltshire, E. (2006) A preliminary molecular investigation to characterize and identify Fulham Oaks, their progeny and related cultivars in London in The London Naturalist 85 39-49
  • Rusanen, M. & Myking, T. (2003) EUFORGEN Technical Guidelines for genetic conservation and use for sycamore (Acer pseudoplatanus)., International Plant Genetic Resources Institute, Rome
  • Rushforth, H.M. (1975) Tree genera: 2 Betula in Arboricultural Journal 2 307–314
  • Rushforth, K. (1995) Acer chapaense and its systematic position in International Dendrology Society Yearbook 1994 69–71
  • Rushforth, K. (1999) Acer bodinieri Hector Léveillé in International Dendrology Society Yearbook 1998 71-72
  • Rushforth, K. (1999) Trees of Britain and Europe, HarperCollins, London
  • Rushforth, K. (2018) The whitebeam problem, and a solution in Phytologia 100:4 222-247 [link] (accessed 2020-04-21)
  • Rushforth, K.D. (1977) Tree genera: 7 The spruces: Picea in Arboricultural Journal 3: 246–255. 246–255
  • Rushforth, K.D. (1983) Abies chengii – A previously overlooked Chinese Silver Fir in Notes from the Royal Botanic Garden Edinburgh 41:2 333-338
  • Rushforth, K.D. (1984b) Abies delavayi and A. fabri in International Dendrology Society Yearbook 1983 118–120
  • Rushforth, K.D. (1984a) Notes on Chinese silver firs: 2 in Notes from the Royal Botanic Garden Edinburgh 41 535–540
  • Rushforth, K.D. (1985) Hornbeams and hop hornbeams: Part 1 in The Plantsman 7 173–191
  • Rushforth, K.D. (1986b) Hornbeams and hop hornbeams: Part 2 in The Plantsman 7 205–211
  • Rushforth, K.D. (1986a) Mexico’s spruces: rare members of an important genus in The Kew Magazine 3 119–124
  • Rushforth, K.D. (1986) Notes of Chinese Silver Firs 3 in Notes from the Royal Botanic Garden Edinburgh 43:2 269-275
  • Rushforth, K.D. (1987a) Conifers, Christopher Helm, Bromley
  • Rushforth, K.D. (1987b) Key to Carpinus and Ostrya in The Plantsman 8 249–256
  • Rushforth, K.D. (1989) Two new species of Abies from western Mexico in Notes from the Royal Botanic Garden Edinburgh 46:1 101-110
  • Rushforth, K.D. (1991) Bhutanese Sorbi: Part 1 in The Plantsman 13 111–124
  • Rushforth, K.D. (1993) Lectotypes for Himalayan Sorbus taxa in Edinburgh Journal of Botany 49 299–310
  • Rushforth, K.D. (1999) Abies recurvata in Curtis's Botanical Magazine 16:3 193-198
  • Rushforth, K.D. (1999) Taxonomic notes on some Sino-Himalayan conifers in International Dendrology Society Yearbook 1998 60–63
  • Rushforth, K.D. (2007) Notes on Cupressaceae in Vietnam in Journal of Ecology Vietnam 29 32–39
  • Rushforth, K.D. (2008) Spruces (Picea: Pinaceae) in the Yarlung Tsangpo drainage of southeast Tibet (Xizang, China) in International Dendrology Society Yearbook 2007 42–53
  • Rushforth, K.D. (2009) The Tibetan Silver Fir in International Dendrology Society Yearbook 2008 39-46
  • Rushforth, K. et al. (2003) Variation among Cupressus species from the eastern hemisphere based on Random Amplified Polymorphic DNAs (RAPDs) in Biochemical Systematics and Ecology 31 17–24
  • Russell, J. (1986) Review: Manual of Cultivated Broad-leaved Trees and Shrubs, Gerd Krüssmann in International Dendrology Society Yearbook 1986 130–134
  • Russell, P.G. & Leese, B.M. (1960) Plant Inventory No. 162 291, United States Department of Agriculture, Washington, D.C. [link] (accessed 2020-07-13)
  • Russell, R. (2019) Cultivar Close-Up: Mighty Miniatures, International Oak Society International Oak Society (accessed 2020-07-17)
  • Rust, S. & Savill, P.S. (2000) The root systems of Fraxinus excelsior and Fagus sylvatica and their competitive relationships. in Forestry 73 501-510
  • Rutgers, The State University of New Jersey (2020) Rosy Teacups® [link] (accessed 2020-11-20)
  • Rutgers, The State University of New Jersey (2020) Starlight® [link] (accessed 2020-11-20)
  • Rutgers, The State University of New Jersey (2020) Venus® [link] (accessed 2020-11-20)
  • Rutgers, The State University of New Jersey (2021) Scarlet Fire® [link] (accessed 2021-02-03)
  • Ryan, M. (1999) Tour Report: North India and Nepal in International Dendrology Society Yearbook 1998 139-150
  • Ryan, S. (2008) Dicksonia Rare Plants Manual., Hyland House Publishing Pty Ltd., Flemington, Victoria