Stems erect, pubescent with scattered hairs, 2 to 3 feet high. Leaflets rather thin, oval or oblong-ovate, blunt, 1 to 4 inches long, one-half to 1 inches wide, sparingly pubescent or glabrous above, softly pubescent beneath; petioles much shorter than the leaflets. Flowers one-fourth to one-third of an inch long, purple, in loose, terminal, compound racemes with small, deciduous bracts. Loment 1 to 2 inches long, two to four-jointed, the joints nearly triangular, about one-fourth of an inch long, slightly convex on the back, pubescent with hooked hairs, with a stipe shorter than the calyx lobes.

In woods and thickets, Maine to Ontario, Minnesota, Alabama, Tennessee. Missouri and Texas. Flowering from the last of June to September.

Memoir 15 N. Y. State Museum

Plate 112

Dillen's tick trefoil Meibomia dillenii

Dillen's tick trefoil Meibomia dillenii