"Stylochaeton" are rhizomatous with hastate leaves. "Sagittaria guayanensis" is a perennial herb with broadly hastate (arrow-shaped) leaves with ovate lobes. The mid-lobe is oblong-ovate with the base hastate to subauriculate. The first was approximately hastate (with protruding lobes) and was ornamented with fine scales. Other species recorded include thrift, scurvy grass, hastate orache and sea beet.