Please sign on the dotted line.

No wonder that the old man's eye dwelt upon her with mingled pride and tenderness; yet was it a face that might cause affection many an anxious hour, for there was mind in the lofty and clear forehead, heart in the warm and flushed cheek,—and what are mind and heart to woman, but fairy gifts, for whose possession a grievous price will be exacted.

It's a piece of old folklore for which I would love to find hard proof.

a checklist of the plants of the Guiana Shield