Description: Melocactus guaricensis is a small solitary species.
Stem: Flattened cactus strongly longitudinally ribbed, up to 18 cm tall, 20 cm in diameter.
Ribs: 10 to 13.
Cephalium: Large orange-red up to 10 cm tall
Flower: Pink, red, red-purple.
Fruit: Red pear shaped