Flower to nearly 4½ inches (11 cm) across, with four whorls of rich yellow, obovate petals. Sepals light yellow, projecting beyond petals. Throat-circle light yellow. Filaments yellow. Stem globular, to 3¾ inches (9.5 cm) in diameter; central spines to ½ inch (14 mm) long. ISI 2001-58; HBG 85606, Schick 1312-11.
