Vegetatively

While there are many different types of algae found floating in the ocean all around world, the Sargasso Sea is unique in that it harbors species of sargassum that are holopelagic. This means that the algae not only freely floats around the ocean, but it reproduces vegetatively on the high seas. Other seaweeds reproduce and begin life on the floor of the ocean.

The Jubulaceae have a leaf whose lobule, usually transformed into a water-sac, is normally very narrowly attached to the stem and to the dorsal lobe; indeed some Frullania taxa reproduce vegetatively by dropping the dorsal lobes, but not the lobules, and Neohattoria has caducous lobules but persistent lobes.

Vegetatively it is the nearest to H. translucens with its oblong-lanceolate leaves, with the margins and keel beset with pellucid teeth, but it differs and is characterised by the greyish-black quadrantly positioned globose flowers; […]