Rhododendron Species


Gallery: ABCDEFGHIJKLMNOPQRSTUVWXYZHOME to hirsutum.info

R. viscosum

SubgenusPentanthera
SectionPentanthera
SubsectionPentantheraClick to see all Pentanthera
Synonyms
R. anthodendron viscosum
R. coryi   (Shinners
Lloyd Herbert Shinners
(1918-1971)
Botanical-short: Shinners
)
Azalea glauca
R. glaucum
Azalea hispida
R. hispidum   (Pursh
Frederick Traugott Pursh
(1774-1820)
Grossenhain, Saxony, Germany
Botanical-short: Pursh
)
Azalea nitida
R. nitidum   (Pursh
Frederick Traugott Pursh
(1774-1820)
Grossenhain, Saxony, Germany
Botanical-short: Pursh
)
Azalea oblongifolia
R. oblongifolium   (Small
John Kunkel Small
(1869-1938)
New York, USA
Botanical-short: Small
)
R. serrulatum   (Small
John Kunkel Small
(1869-1938)
New York, USA
Botanical-short: Small
)
R. serrulatum f molliculum
R. serrulatum var georgianum
R. venustrum
Azalea viscosa var aemulans
Azalea viscosa var palustris
Azalea viscosa var virens
R. viscosum f rhodantha
R. viscosum f roseum
R. viscosum var aemulans
R. viscosum var glaucum
R. viscosum var hispidum
R. viscosum var montanum
R. viscosum var nitidum
R. viscosum var rubescens
R. viscosum var serrulatum
R. viscosum var tomentosum
In cultivation since: 1680

First described: 1748, (L.
Carolus Linnaeus
(1707-1778)
Råshult, Älmhult, Sweden
Botanical-short: L.
)

Origin: Maine and Vermont and S.E. Texas to Florida 0-1500 meter

Corolla: unknown
Leaves: unknown

Habit: terrestrial
epiphytic = living on dead organic material (decaying trees f.i)
terrestrial = in soil (like in your garden)

Winter: deciduous
Bloomtime: very late
Hardiness: H5
H0 = 0 °C (32 F)
H1 = -7 °C (20 F)
H2 = -12 °C (10 F)
H3 = -15 °C (5 F)
H4 = -18 °C (0 F)
H5 = -24 °C (-10 F)


Predominant color: white

Height
Height
The figures listed here are the observed size in the natural environment.

The exact location (altitude, sunlight, soil, climate) can influence growth considerably
: 500 cm. (17ft.)

Registered
In 'Your Garden' you can administrate
your rhododendrons.

To try/see this go 'Home' (top-right).
on hirstum.info: 30
R. viscosum per country:
(could be a clue for heat/cold-tolerance)

United States : 7
Netherlands : 7
Belgium : 5
France : 3
Denmark : 2
Estonia : 2
Sweden : 1
Canada : 1
Germany : 1
Finland : 1

Common names
Clammy Azalea
Moeras azalea, (Dutch)
Swamp Azalea
Swamp Honeysuckle


Natural Hybrids
hybridum =(maximum x viscosum)

Clones / selections
'Album', 1811, Loddiges, C. & Sons, Hackney, London, England
'Good Old Summertime', 1987, unknown, ,
'Lemon Drop', 1985, Beasley, W.G., Transplant Nursery, Lavonia, Georgia, USA
'Rubescens Major', unknown, ,


Send questions, information or pictures

Rhododendron viscosum
Photo byHerman Van Ree
Date10 June, 2010
Locationown garden Nunspeet, Netherlands
See high-resolution version
Rhododendron viscosum
87.017
Photo byHank Helm
Date
LocationRhododendron Species Botanical Garden, Federal Way, WA, USA
See high-resolution version
Rhododendron viscosum
Photo byEverard Daniel
DateApril, 2006
LocationLeonardslee/Loder Plants, Sussex, UK
See high-resolution version
Rhododendron viscosum
Photo byHerman Van Ree
Date10 June, 2010
Locationown garden Nunspeet, Netherlands
See high-resolution version
Rhododendron viscosum
Photo byEverard Daniel
DateApril, 2006
LocationLeonardslee/Loder Plants, Sussex, UK
See high-resolution version
Rhododendron viscosum
Photo byCoen Zonneveld
Date21 June, 2003
LocationDiepenveen, Netherlands
See high-resolution version
Rhododendron viscosum
Photo byMihkel Saar
Date
LocationHansaplant, Harjumaa , Estonia
See high-resolution version
Rhododendron viscosum
new leaves
Photo byHerman Van Ree
Date28 July, 2009
LocationNunspeet, Netherlands
Rhododendron viscosum
Photo byHerman Van Ree
Date28 July, 2009
LocationNunspeet, Netherlands




Parentage according the IRRC of the Royal Horticultural Society
Hybrids / cultivars where R. viscosum is directly involved:     show indirect inv.
'Altanuwa', 1986, Holmsomback, O., , R. cumberlandense x R. viscosum
'Antilope' (photoClick to see more information


Antilope
), 1938, Felix, B.B.C., Felix & Dijkhuis, Boskoop, Netherlands
R. viscosum x 'Koster's Brilliant Red'
'Arpège' (photoClick to see more information


Arpège
), 1938, Felix, B.B.C., Felix & Dijkhuis, Boskoop, Netherlands
R. viscosum x 'Koster's Brilliant Red'
'Bonny', 1985, Hachmann, Hans, Barmstedt in Holstein, GermanyR. viscosum x 'Sarina'
'Cassley' (photoClick to see more information


Cassley
), 1993, Millais Nurseries, ,
R. viscosum x 'Rosella'
'Chanel' (photoClick to see more information


Chanel
), 1938, Felix, B.B.C., Felix & Dijkhuis, Boskoop, Netherlands
R. viscosum x ?
'Daviesii' (photoClick to see more information


Daviesii
), 1840, Davies, I, Ormskirk, Lancashire, England
R. viscosum x R. molle ssp molle
'Earl of Carnarvon', 1958, No hybridiser registered, , R. viscosum x R. molle ssp molle
'Elegantissimum Odoratum', 1850, Vuylsteke, C., , R. viscosum x ?
'Fragrans' (photo), 1843, unknown, , R. catawbiense x R. viscosum
'Framingham', 1980, Weston Nurseries, , R. viscosum x ?
'Golden Showers', 1963, Mezitt, E.V., Weston Nurseries, Hopkinton, Massachusetts, USAR. viscosum x R. cumberlandense
'Hybridum Group', 1817, Herbert, Honourable & Reverend W., Wetherby, Yorkshire, EnglandR. viscosum x R. maximum
'Independence', 1963, Mezitt, E.V., Weston Nurseries, Hopkinton, Massachusetts, USA'cumberlandense x viscosum' x R. viscosum
'Jasminiflorum', 1839, van Geert, J., , R. viscosum x ?
'Karminduft' (photoClick to see more information


Karminduft
), 1985, Hachmann, Hans, Barmstedt in Holstein, Germany
R. viscosum x 'Nabucco'
'Midsummer Mermaid' (photoClick to see more information


Midsummer Mermaid
), 1995, Millais, E.G., ,
R. viscosum x ?
'Moorgold' (photoClick to see more information


Moorgold
), 1985, Schmalscheidt, W., ,
R. viscosum x R. molle ssp molle
'Pennsylvania' (photoClick to see more information


Pennsylvania
), 1963, Mezitt, E.V., Weston Nurseries, Hopkinton, Massachusetts, USA
R. prunifolium x R. viscosum
'Pink Mimosa' (photoClick to see more information


Pink Mimosa
), 1938, Felix, B.B.C., Felix & Dijkhuis, Boskoop, Netherlands
R. viscosum x 'Koster's Brilliant Red'
'Popsicle' (photoClick to see more information


Popsicle
), 1965, Mezitt, E.V., Weston Nurseries, Hopkinton, Massachusetts, USA
R. viscosum x R. arborescens
'Ribbon Candy' (photoClick to see more information


Ribbon Candy
), 1965, Mezitt, E.V., Weston Nurseries, Hopkinton, Massachusetts, USA
R. viscosum x R. arborescens
'Rosata' (photoClick to see more information


Rosata
), 1938, Felix, B.B.C., Felix & Dijkhuis, Boskoop, Netherlands
R. viscosum x 'Koster's Brilliant Red'
'Soir de Paris' (photoClick to see more information


Soir de Paris
), 1938, Felix, B.B.C., Felix & Dijkhuis, Boskoop, Netherlands
'Koster's Brilliant Red' x R. viscosum
'Sommerduft' (photoClick to see more information


Sommerduft
), 1984, Hachmann, Hans, Barmstedt in Holstein, Germany
R. viscosum x R. arborescens
'Tagu', 1985, Holmsomback, O., , R. cumberlandense x R. viscosum
'Torridon' (photoClick to see more information


Torridon
), 1993, Millais Nurseries, ,
R. viscosum x 'Rosella'
'Viscosepalum' (photoClick to see more information


Viscosepalum
), 1842, Waterer, H. (Knaphill), Woking, Surrey (Knaphill), UK
R. molle ssp molle x R. viscosum
'viscosum x Koster's Brilliant Red', No hybridiser registered, , R. viscosum x 'Koster's Brilliant Red'
'Weston's Firecracker', 1974, Mezitt, E.V., Weston Nurseries, Hopkinton, Massachusetts, USAR. prunifolium x R. viscosum
'Weston's Innocence' (photoClick to see more information


Weston's Innocence
), 1963, Mezitt, E.V., Weston Nurseries, Hopkinton, Massachusetts, USA
R. arborescens x R. viscosum
'Weston's Parade' (photoClick to see more information


Weston's Parade
), 1985, Mezitt, E.V., Weston Nurseries, Hopkinton, Massachusetts, USA
R. cumberlandense x R. viscosum
Hybrids where clones/selections of R. viscosum are involved (alphabetical per clone)
'Altaclerense', 1842, Highclere, , R. molle ssp molle x R. viscosum 'Rubescens Major'


Indirect involvement of R. viscosum in cultivars: (cultivar = direct child/cultivar of viscosum)
'Solway' (photo), 1993, Millais Nurseries, , 'Torridon' x 'Sugared Almond'
'Carat' (photo), 1971, Boskoop, Research Center fo Arboreus Crops, Netherlands'viscosum x Koster's Brilliant Red' x 'Satan'
'Diorama' (photo), Boskoop, Research Center fo Arboreus Crops, Netherlands'viscosum x Koster's Brilliant Red' x 'Fireglow'
'Jolie Madame' (photo), 1971, Boskoop, Research Center fo Arboreus Crops, Netherlands'viscosum x Koster's Brilliant Red' x 'Satan'
'Millennium' (photo), 1973, Mezitt, E.V., Weston Nurseries, Hopkinton, Massachusetts, USA'Weston's Sparkler' x 'Weston's Parade'
_____________________________________________________________________________________________________________________________________
Rhododendron Species   Hirsutum.info     Project started 03 June 2009