There is no evidence that these erectile plates are real limbs.
But Indirect stimulus induces the positive or erectile response.
The plume of the other varieties is erectile, but that of the San Pedro denizen is soft and falls down the side.
The two California species have two round, black plumes falling gracefully over the back of the neck, but erectile when excited.
The dabchick is a small bird—rather smaller than a pigeon—and has no erectile ornaments.
Male with two erectile pointed tufts of feathers on the anterior lateral parts of the head.
Plumage soft and blended, feathers of the head elongated and erectile; distinct bristles at the base of the upper mandible.
There is the tyranny of Jove in its claws, and his wrath in the erectile feathers of the head and neck.
The positive impulse reached the responding organ after 1.5 second and caused an erectile movement.
In condition of sub-tonicity the pulvinus of Mimosa responds to stimulus by an abnormal positive or erectile response.