Turtlehead

• (n.) An American perennial herb (Chelone glabra) having white flowers shaped like the head of a turtle. Called also snakehead, shell flower, and balmony.
Found on http://thinkexist.com/dictionary/meaning/turtlehead/

turtlehead

snakehead noun showy perennial of marshlands of eastern and central North America having waxy lanceolate leaves and flower with lower part creamy white and upper parts pale pink to deep purple
Found on https://www.encyclo.co.uk/local/20974
No exact match found