"Tergal skeleton of Asterius rubens. a, connecting pieces; b, spinebearing plates." — Encyclopedia…
"Asterias rubens. a, 4-ranked pedicelis; b, end of pedicel magnified." — Encyclopedia Britannica,…
"Antambulacral surface of Asterias rubens. a, madreporite; a', the same magnified; b, anus." —…
"One of the most beautiful of the European species of trachelia is the Pyrochroa rubens, which…