Rhododendron laetum
Section Euvireya: Subsection Euvireya
Height - 3m - terrestrial
Leaves - broadly elliptic - 9.5 x 5.3cm
Flowers - funnel-shaped - 7cm - up to 12 per umbel -
sometimes fragrant
Location - Indonesia: W.New Guinea: Arfak Mts. - 1800-2300m
Epithet - "bright"
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Rhododendron laetum 'Black & Woods' form
Section Euvireya: Subsection Euvireya
Height - 3m - terrestrial
Leaves - broadly elliptic - 9.5 x 5.3cm
Flowers - funnel-shaped - 7cm - up to 12 per umbel -
sometimes fragrant
Location - Indonesia: W.New Guinea: Arfak Mts. - 1800-2300m
Epithet - "bright"
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Rhododendron lagunculicarpum
Section Albovireya
Height - 2m - terrestrial
Leaves - sub-circular to elliptic - 2.5 x 1.6cm
Flowers - elongate-campanulate - 2cm - up to 6 per umbel
Location - Indonesia: Sulawesi: Latimodjong Range -
2800-3000m
Epithet - "small bottle-shaped fruits"
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Rhododendron lambianum
Section Euvireya: Subsection Solenovireya
Height - to 3m - terrestrial or epiphytic
Leaves - narrowly obovate to narrowly elliptic - 12 x 4.5cm
Flowers - tubular funnel-shaped - 5cm - up to 18 per umbel
Location - Malaysia: Borneo: Sabah: Mt. Alab; Sarawak: Mt. Mulu -
1400-1600m
Epithet - after Tony Lamb, who first found this species.
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Rhododendron lamrialianum ssp. lamrialianum
Section Malayovireya
Height - 1m - epiphytic
Leaves - elliptic - 8 x 3cm - scaly
Flowers - yellow tube with orange lobes; brown scaly
on exterior of corolla - 2.8cm -
up to 5 per umbel (10 in cultivation)
Location - Malaysia: Sabah: G. Trus Madi
Epithet - after Datuk Lamri Ali, Director of Sabah Parks
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Rhododendron lamrialianum ssp. gunsalamianum
Section Malayovireya
Height - 1m - epiphytic
Leaves - elliptic - 8 x 3cm - scaly
Flowers - yellow tube with orange lobes, brown scaly
on exterior of corolla - 2.8cm
up to 5 per umbel (10 in cultivation)
Location - Malaysia: Sabah: G. Kinabalu - 2150-2700m
Epithet - sp. after Datuk Lamri Ali, Director of Sabah
Parks;
ssp. after Ansow Gunsalam, who has accompanied many
scientists on field trips in Sabah.
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Rhododendron lanceolatum
Section Euvireya: Subsection Euvireya
Height - 1.2m - mostly epiphytic
Leaves - ovate to elliptic - 12 x 4.5cm
Flowers - sub-campanulate - 2.4cm - up to 10 per umbel
Location - Malaysia: Sarawak: Mt. Batu Lawi, Mt. Mulu,
Mt. Murud; Sabah: Long Pasia;
Indonesia: W.Kalimantan: Mt. Batu Tiban - 1,000-1,600m
Epithet - "spear-shaped" alluding to leaf
shape
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Rhododendron leptanthum
Section Phaeovireya
Height - to 3m - terrestrial or epiphytic
Leaves - ovate - 6.5 x 3cm - scaly
Flowers - cyclindrical, curved - 3.5cm - up to 5 per umbel
Location - Papua New Guinea: Mading to Milne Bay Districts - 1370-2250m
Epithet - "with slender flowers"
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Rhododendron leptobrachion
Section Euvireya: Subsection Euvireya
Height - 3m - terrestrial
Leaves - narrowly elliptic - 9 x 2.8cm
Flowers - tubular - 4cm - up to 10 per umbel
Location - Indonesia: Sulawesi: Mt. Pokapindjang, Mt. Rantemario - 2000-3000m
Epithet - alluding to the small diameter of the branches
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Rhododendron leucogigas
Section Euvireya: Subsection Euvireya
Height - 3m - epiphytic
Leaves - elliptic - 28 x 10.5cm
Flowers - tubular-funnel-shaped - 14cm - up to 8 per umbel - strongly scented
Location - Indonesia: W.New Guinea: Cycloop Mts.; Papua New Guinea: Hunstein Mts.
1000-1500m
Epithet - "white giant"
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Rhododendron leucogigas 'Hunstein's Secret'
Section Euvireya: Subsection Euvireya
Height - 3m - epiphytic
Leaves - elliptic - 28 x 10.5cm
Flowers - tubular-funnel-shaped - 14cm - up to 8 per umbel - strongly scented
Location - Indonesia: W.New Guinea: Cycloop Mts.; Papua New Guinea: Hunstein Mts.
1000-1500m
Epithet - "white giant"
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Rhododendron lindaueanum
Section Discovireya
Height - to 3m - mainly epiphytic
Leaves - obovate to spathulate - 2.5 x 1.5cm
Flowers - tubular - 2.4cm - up to 3 per umbel
Location - Indonesia & Papua New Guinea: from the Arfak Mts in the west to Mt. Saruwaged in the east - 1250-3200m
Epithet - after G. Lindau, German botanist.
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Rhododendron lineare
Section Malayovireya
Height - 2m - mostly epiphytic
Leaves - linear - 3 x 0.7cm - scaly
Flowers - funnel-shaped - 2.2cm - up to 6 per umbel - brown scales on outside of corolla
Location - Malaysia: Sarawak & Brunei: widespread - 360-1230m
Epithet - alluding to the linear leaf shape
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Rhododendron lochiae
Section Euvireya: Subsection Euvireya
Height - 6.5m - terrestrial
Leaves - broadly elliptic - 9 x 5cm
Flowers - curved, tubular - 5.5cm - up to 6 per umbel
Location - Australia: Queensland, Bellenden Kerr Range - 1200-1520m
Epithet - after Lady Loch, wife of the governor of Victoria, in recognition of her patronage to
Victorian horticulture.
Since late 2002, all forms of R. lochiae with a straight corolla tube have been reclassified as
R. viriosum. Plants with a curved tube that in 1996 were given the name R. notiale have now
reverted to the name R. lochiae and the name R. notiale is no longer in use.
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Rhododendron longiflorum
Section Euvireya: Subsection Euvireya
Height - 3m - epiphytic or terrestrial
Leaves - narrowly obovate - 9 x 4cm
Flowers - orange, pink or red, often with yellow throat - campanulate, straight or curved tube -
6cm - up to 10 per umbel
Location - Thailand: Yala Province; Malaysia: Sabah & Sarawak; Brunei;
Indonesia: Sumatra & Kalimantan - 0-1500m
Epithet - "with long flowers"
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Rhododendron loranthiflorum ssp. loranthiflorum
Section Euvireya: Subsection Solenovireya
Height - 2m - epiphytic
Leaves - obovate - 6 x 2.5cm
Flowers - trumpet-shaped - 4.2cm - scented - up to 7 per umbel
Location - Papua New Guinea: New Britain; Solomon Islands: Bougainville, Buin & New
Georgia, not on mainland New Guinea - 180-1500m
Epithet - "with flowers like a Loranthus"
The clone 'Dick Shaw' is named after Richard Shaw, former assistant curator at the Benmore Botanic Garden, then curator at Kew and finally the Royal Botanic Garden Edinburgh.
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Rhododendron lowii
Section Euvireya: Subsection Euvireya
Height - 10m - terrestrial
Leaves - broadly elliptic - 20 x 10cm
Flowers - funnel-shaped - yellow to orange - 11cm - up to 15 per umbel
Location - Malaysia: Sabah, Mt. Kinabalu, Mt. Trus Madi & Mt. Alab - 2700-3650m
Epithet - after Sir Hugh Low, 1824-1905, who made the first recorded ascent of G. Kinabalu
in 1851
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Rhododendron luraluense ssp. luraluense
Section Euvireya: Subsection Euvireya
Height - 9m - epiphytic or terrestrial
Leaves - obovate-elliptic - 6 x 3cm
Flowers - funnel-shaped - 4.5cm - up to 6 per umbel
Location - Papua New Guinea: Bougainville Island - 900-1500m
Epithet - "of Lake Luralu"
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Click image for enlargement.
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