The stems are contracted with an incurvate and thinned basal edge.
The base is incurvate and usually thinned with some fine retouch.
The stem may be straight or slightly expanded with straight or incurvate side edges.
The blade is usually straight; rarely, excurvate or incurvate.
The basal edge may be straight—or incurvate one or two millimeters—and is thinned.
The blade is incurvate, beveled on each side of both faces, and is in rare instances serrated.
The stem is usually straight but may be expanded, with straight or incurvate side edges.
The stem is broad and may be straight, slightly contracted, or expanded, with an incurvate basal edge that may be thinned.
The side edges of the stem are incurvate and usually ground.
The steeply beveled basal edge may be straight or incurvate.