True delicacy, that most beautiful heart-leaf of humanity, exhibits itself most significantly in little things.    From Wordnik.com.  [Strife and Peace] Reference

Gretchen was stirring before Ottilie awoke, and must needs run out to pluck a fern-spray and a heart-leaf, and mayhap a lingering tiger-lily, that her beloved.    From Wordnik.com.  [Tiger-lilies] Reference

In four or five days, the cord will slough off; the naval should then be anointed with an ointment made by stewing heart-leaf root, or bearsfoot root in fresh butter.    From Wordnik.com.  [The Cherokee Physician, or Indian Guide to Health, as Given by Richard Foreman, a Cherokee Doctor; Comprising a Brief View of Anatomy, With General Rules for Preserving Health without the Use of Medicines. The Diseases of the U. States, with Their Symptoms, Causes, and Means of Prevention, are Treated on in a Satisfactory Manner. It Also Contains a Description of a Variety of Herbs and Roots, Many of which are not Explained in Any Other Book, and their Medical Virtues have Hitherto been Unknown to the Whites; To which is Added a Short Dispensatory.] Reference

All the mouldings were carved with the “egg-and-dart,” heart-leaf and anthemion ornaments, so designed as to recall by their outline the profile of the moulding itself.    From Wordnik.com.  [A Text-Book of the History of Architecture Seventh Edition, revised] Reference

On the day before the deer-drive at Thalberg, Gretchen was stirring before Ottilie awoke, and must needs run out to pluck a fern-spray and a heart-leaf, and mayhap a lingering tiger-lily, that her beloved Ottilie might be greeted with something beautiful upon the breakfast-table.    From Wordnik.com.  [Tiger-Lilies. A Novel.] Reference

And the heart-leaf foretels the blossom.    From Wordnik.com.  [Strife and Peace] Reference