665.11.00 HydrostachyaceaeBotany: 1 genus, Hydrostachys; 22 species;
Madagascar, southern and central Africa; aquatic, growing on rocks in fast-moving water.
TaxonomyPhylogenetic placement of Hydrostachys has been problematic. Hydrostachys was formerly grouped with other aquatic plants, such as the
Podostemaceae. Later it was placed in
Hydrangeaceae but that makes
Hydrangeaceae paraphyletic.
In the
Apg3 classification Hydrostachys is placed in its own family
Hydrostachyaceae in the Order
Cornales. Hydrostachys though shares few morphological similarities with other
Cornales.
In the
Plant theory Hydrostachyaceae is placed in
Cornales. As an aquatic it is placed in
Subphase 1.
IntroductionHydrostachys is unknown in homeopathy.