Molecular Biology and Genetics
Statistics of barcoding coverage
Specimens with Sequences:950
Specimens with Barcodes:584
Species With Barcodes:91
In its broad sense (as treated by the Angiosperm Phylogeny Group), the family includes 17 genera, but some botanists divide the family into two, with seven genera split off into a separate family, Philadelphaceae.
The genera are characterised by leaves in opposite pairs (rarely whorled or alternate), and regular, bisexual flowers with 4 (rarely 5-12) petals. The fruit is a capsule or berry containing several seeds, the seeds with a fleshy endosperm.
- 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.
- "Family: Hydrangeaceae Dumort., nom. cons.". Germplasm Resources Information Network. United States Department of Agriculture. 2003-01-17. Retrieved 2012-07-31.
- "GRIN Genera of Hydrangeaceae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2012-07-31.
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