Chinese Peony, Garden Peony 'Monsieur Martin Cahuzac'

Per the 1928 Lee R. Bonnewitz Iris and Peony catalog of Van Wert, Ohio:
M. MARTIN CAHUZAC (Dessert). The very darkest red Peony in...Read More the world, sometimes called the BLACK PEONY. On young plants it is apt to be only semi-double, but on strong three-year-old plants the blooms grow very large and very full, almost completely concealing the beautiful yellow stamens which are hidden among the very dark petals. Its only rival in its color class is MME. GAUDICHAU, and in our own minds we have not been able to decide which of these two varieties is the more valuable. It is the kind of Peony which a man naturally selects as the outstanding variety in the garden, and we believe it to be one of the best varieties for commercial growers. $3.00

Per the APS website:
MONS. MARTIN CAHUZAC (Dessert, 1899) - Double - Red - Early Midseason. Medium height. No fragrance. Large. Maroon-crimson, with a silky, black luster. Free-flowering; erect, stiff stems. Often said to be the darkest peony. It is frequently loosely formed, with many stamens. When good it is very full high-globular flower of much distinction.