The woman depicted is Mrs. Leonard Marsh. While strongly influenced by Fauvism, Lyman's work is characterized by an "emotional reserve" and "psychological distance" out of keeping with that movement. His mature work does not stray far from Matisse in terms of subject matter (portraits, nudes, etc.), but displays relatively muted colors and smooth paint-handling. Woman With a White Collar especially shows this mixture of Fauvist influence with Lyman's "calm, classical" personal style. It can be compared with similar portraits by Matisse in its handling of the facial planes and the somewhat arbitrary use of color, but displays a "prim and static elegance" in its contrast of the solidly formed head against the neutral background. (https://en.wikipedia.org/wiki/John_Goodwin_Lyman)