Pentaphylax
| Pentaphylacaceae | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Ericales |
| Family: | Pentaphylacaceae Engl.[1] |
| Genus: | Pentaphylax |
| Species | |
|
Pentaphylax euryoides | |
Pentaphylax is a genus of flowering plants, with one[2] or two[3] species which are shrubs and small trees. The species has simple evergreen leaves that are alternately arranged on the stems. The flower pistil is 5 celled and the anthers dehiscing via pores and basifixed. Flowers have five petals and five sepals that are distinct from each other and five stamens attached oppositely to the sepals. The Seeds are winged.
Native from Tropical areas of South China to Malay Peninsula and Sumatra.
Species include: Pentaphylax euryoides[4]
Taxonomy
Pentaphylax has often been placed in its own family, the Pentaphylacaceae, excluded from the Theaceae or Ternstroemiaceae based on the structure of the anthers and, arguably, the ovules. However, some molecular data and curved embryos (typical of the Ternstroemiaceae) point to inclusion within the Ternstroemiaceae.[5][6]
The taxonomic placement of this species and the family is currently problematic, due mostly to a shortage of information. Included here is some classifications given by different botanists:
- Shorta Subclass Dicotyledonae; Crassinucelli (?).
- Dahlgren's Superorder Theiflorae (?); Theales (?).
- Cronquist’s Subclass Dilleniidae; Theales.
- Angiosperm Phylogeny Group (1998) family of uncertain position at the highest group level.[3]
- subfamily Ternstroemioideae within the Theaceae.[2]
References
- ↑ Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III" (PDF). Botanical Journal of the Linnean Society 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. Retrieved 2013-07-06.
- ↑ 2.0 2.1 "Pentaphylacaceae". Flora of China.
- ↑ 3.0 3.1 Pentaphylacaceae Engl., Angiosperm Phylogeny Website
- ↑ "Pentaphylax euryoides". Flora of China.
- ↑ Arne A. Anderberg, Catarina Rydin and Mari Källersjö (2002). "Phylogenetic relationships in the order Ericales s.l.: analyses of molecular data from five genes from the plastid and mitochondrial genomes". American Journal of Botany 89 (4): 677–687. doi:10.3732/ajb.89.4.677. PMID 21665668.
- ↑ Bremer, B; Bremer, K; Heidari, N; Erixon, P; Olmstead, RG; Anderberg, AA; Källersjö, M; Barkhordarian, E (2002). "Phylogenetics of asterids based on 3 coding and 3 non-coding chloroplast DNA markers and the utility of non-coding DNA at higher taxonomic levels". Molecular Phylogenetics and Evolution 24 (2): 274–301. doi:10.1016/S1055-7903(02)00240-3. PMID 12144762.