The plant stems are erect and stiff. The penis may erect during sleep or be erect on waking up. Some deer species spray urine on their bodies by urinating from an erect penis. An erect phallus rose from the base. Some prehistoric sculptures and petroglyphs depict male figures with exaggerated erect penises. Satyrs' genitals are always depicted as either erect or at least extremely large. Pan, son of Hermes, was often depicted as having an exaggerated erect phallus. These are evergreen perennial herbs with stems growing erect or decumbent and creeping. In Elizabethan bawdy, 'pride' is a euphemism for penis, especially an erect one. During the song, girls dance with candles shaped like erect penises. Along the animal's neck is a mane made of short, erect hairs. It appears with alternations of compressed and stretched areas, erect images, and inverted images. However, studies have also shown drastic differences between stretched and erect length. During this time, their ears erect and their muzzles elongate. The ovary is simple and triangular shaped with three erect or deflexed styles.