Rhododendron javanicum explained

Rhododendron javanicum is a rhododendron species native to Indonesia, Malaysia, and the Philippines.^[1] This evergreen shrub grows to 5m (16feet) with bright orange flowers in spring. Plants may be terrestrial or epiphytic. Some forms from the Philippines may have red or bicoloured flowers, but are less often seen in cultivation.^[2]

Subspecies

Nine subspecies are recognized:^[3]

• Rhododendron javanicum subsp. brookeanum (H.Low ex Lindl.) Argent & Phillipps – epiphytic shrub or tree, Borneo
• Rhododendron javanicum subsp. cladotrichum (Sleumer) Argent – epiphytic shrub, Borneo (Sabah and east-central Kalimantan)
• Rhododendron javanicum subsp. gracile (H.Low ex Lindl.) Argent, A.Lamb & Phillipps – epiphytic shrub, Borneo
• Rhododendron javanicum subsp. javanicum – hemiepiphytic shrub or small tree, Sumatra, Java, Borneo, and the Lesser Sunda Islands
• Rhododendron javanicum subsp. kinabaluense (Argent, A.Lamb & Phillipps) Argent – hemiepiphytic shrub, Borneo (Sabah)
• Rhododendron javanicum subsp. moultonii (Ridl.) Argent – epiphytic shrub, Sabah and Sarawak
• Rhododendron javanicum subsp. palawanense Argent – epiphytic shrub, Philippines (Palawan)
• Rhododendron javanicum subsp. schadenbergii (Warb.) Argent – epiphytic shrub, Philippines and northeastern Sulawesi
• Rhododendron javanicum subsp. teysmannii (Miq.) Argent – epiphytic shrub, Peninsular Malaysia, Sumatra, Java, and Lesser Sunda Islands

External links

• • Vireya.net
• Hirsutum.com

Notes and References

1. https://npgsweb.ars-grin.gov/gringlobal/taxonomydetail.aspx?id=5180 USDA Germplasm Resources Information Network (GRIN)
2. Web site: Rhododendron javanicum . Trees and Shrubs Online . International Dendrology Society . 22 April 2021.
3. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:332655-1 Rhododendron javanicum (Blume) Benn.