Whittle sey a (hwitlsia)

[Named after C. Whittle sey (see def.).] The generic name of a plant first found by Charles Whittle sey in the coal-measures at Cuyahoga Falls, Ohio, and named by J. S. New berry in honor of its discoverer (1853). This plant is known only by its leaves, of which the nervation is very peculiar, excluding it from all other known genera. The generic characters, as given by Lesquereux, are-"frond simple or pinnate, nerves fasciculate, confluent to the base, not dichotomous, fructification unknown." The leaves have a peculiar truncate form, are somewhat fan-like in shape, and dentate at the upper border, but entire on the sides and rapidly narrowing into a short petiole. This plant, of which the nervation has some analogy with that of the gingko, was placed by Lesquereux with the No eggar at hieæ; Schenk considers it as po ibly belonging to the gymnosperms. Whittle sey a has been found in various localities, always low down in the coal-measures.