Origin of this variety is uncertain. Belgian authorities generally attribute it to Van Mons, but Leroy contends that it was grown in France long before the time of Van Mons. Fruit medium in size, bell-shaped with long tapering neck, very graceful in form. Skin smooth, grass-green in color. Flesh greenish-white, moderately fine, some grit at the center, buttery, juicy. Moderately sweet with characteristic nut-like flavor. Second rate in dessert quality. Early midseason. Tree of average vigor, heavy annual bearer, good foliage, semi-dwarf on quince. Fairly susceptible to blight. -- H. Hartman, 1957.Not to be confused with the ancient variety Vert Longue d'Automne.
Long Green. An old European variety described by Duhamel. Synonyms: Autumn Mouthwater, Great Mouthwater, Green Mouthwater, Gros Mouille Bouche, Long Green Mouthwater, Longue Verte, Long Vert (of Coxe), Mouille Bouche, Mouille Bouche d'Automne, Mouthwater, Muscat fleure, New Autumn, Vert Longue, Verte Longu d'Automne, Verte Longue de la Mayenne. -- W.H. Ragan, Nomenclature of the Pear, 1908.
Verte Longue, Mouille Bouche, or Long Green. This is a small pear, the skin green when fully ripe; the flesh melting and juicy, with a spicy taste, not universally admired, very similar to that of the Verte Longue Panachee. It ripens in the end of September and beginning of October. -- W. Coxe, A view of the cultivation of fruit trees, 1817.