This reddish-brown plant is known in aquaristics as Blyxa novoguineensis, however, it is doubtful whether it really belongs to this species home to Papua New Guinea. This is the reason why we place a "cf." before the species name here. Photos of the herbarium sheet of the isotype of Blyxa novoguineensis Hartog (Brass No. 7638) show a distinctly different plant with a long, sparsely foliose stem with relatively short leaves. The plant sold under the name "B. novoguineensis" might be identical with the red colour variety of B. aubertii listed by Christel Kasselmann (2010). However, other than the rosulate B. aubertii, and similar to B. japonica, B. cf. novoguineensis forms a stem above the substrate after some time.
Unlike B. japonica, though, Blyxa cf. novoguineensis maintains its reddish brown tint even under moderate light. Its overall height, respectively leaf length, of 30 cm places it between B. japonica and B. aubertii.
To be continued...
<a href="https://www.flowgrow.de/db/aquaticplants/blyxa-sp-novoguineensis" target="_blank"><img alt="Blyxa sp. "novoguineensis"" title="Blyxa sp. "novoguineensis"" src="https://www.flowgrow.de/db/widget/aquaticplants/blyxa-sp-novoguineensis" /></a>
[widget=aquaticplants/blyxa-sp-novoguineensis]Blyxa sp. "novoguineensis"[/widget]