broomrape (Orobanche coerulescens)
A parasitic plant found in coastal areas; the name is a specific species of broomrape.
Broomrape was growing in clusters on the sandy coast.
Rare kanji form; it is rarely used.
The name ハマウツボ literally means 'beach quiver' (浜 + 靫), likely from the shape of the plant. The exact derivation is uncertain.