Subularia

Quite common are northern bur-reed Sparganium hyperboreum, small pondweed Potamogeton pusillus ssp. groenlandicus, dwarf water-crowfoot Ranunculus confervoides and occasionally awlwort Subularia aquatica, which only blooms if the pond is totally desiccated (where the mudworm Limosella aquatica also thrives).

Ilulissat Icefjord, Denmark-Greenland 2008

Pray kindly bear in mind about impregnation in bud: I have never (for some years having been on the look-out) heard of an instance: I have long wished to know how it was in Subularia, or some such name, which grows on the bottom of Scotch lakes, and likewise in a grassy plant, which lives in brackish water, I quite forget name, near

More Letters of Charles Darwin — Volume 1 Charles Darwin 1845

Subularia under water (and Leguminosae) seem and are strongest cases against me, as far as I as yet know.

More Letters of Charles Darwin — Volume 2 Charles Darwin 1845