Biology:Rhododendron javanicum

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Rhododendron javanicum
Rhododendron javanicum.jpg
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Ericaceae
Genus: Rhododendron
Species:
R. javanicum
Binomial name
Rhododendron javanicum
(Blume) Benn.
Synonyms
  • Azalea javanica (Blume) Kuntze[1]
  • Rhododendron brookeanum Low ex Lindl. [2]
  • Vireya javanica Blume.[3]

Rhododendron javanicum is a rhododendron species native to Indonesia, Malaysia, and the Philippines.[4] This evergreen shrub grows to 5 m (16 ft) 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.[5]

Subspecies

Nine subspecies are recognized:[1]

  • 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

References

  1. 1.0 1.1 Rhododendron javanicum (Blume) Benn. Plants of the World Online, Kew Science. Accessed 13 March 2023.
  2. Jermy, A.C.; Kavanagh, K.P. (1982), "Notulae et Novitates Muluenses", Botanical Journal of the Linnean Society 85 (1): 1–73, doi:10.1111/j.1095-8339.1982.tb00370.x 
  3. Horsfield, T.; Bennett, J.J.; Brown, R. (1838), Plantae javanicae rariores, descriptae iconibusque illustratae, quas in insula Java, annis 1802-1818 legit et investigavit, https://books.google.com/books?id=NspLAAAAcAAJ  pages 85–87 and plate XIX
  4. USDA Germplasm Resources Information Network (GRIN)
  5. "Rhododendron javanicum". International Dendrology Society. https://treesandshrubsonline.org/articles/rhododendron/rhododendron-javanicum/. 

External links

Wikidata ☰ Q17241802 entry