At the home in Limestone County where I grew up is a large pecan tree, 3 times as tall and as widespread as the one-story, 3BE home. It was already a large tree, almost too big to climb, back in 1960.  It puts out pecans about as long as a quarter; looked at from the stem end are oval-shaped, not circular; not a paper shell, but still good eating. Dad called them "hog pecans"; or was he saying "Hogg pecans", named after Gov. James Hogg, who requested that a pecan and a walnut tree be planted at at his grave site, and that offspring of these trees be given out across Texas, to "Make Texas a land of trees" (story from J. Frank Dobie)?