Description: English: Clematis ochroleuca Alton - Curlyheads, Curly-heads, Silky leather-flower Original caption: Erect Silky Leather Flower - Viorna ochroleuca (Alton) Small - Plate 74. Date: 1918. Source: Wild Flowers of New York Part 1, University of the State of New York, State Museum, Albany.. Author: Homer D. House, New York State Botanist. Walter B. Starr of the Matthews-Northrup Company, Buffalo, and Harold H. Snyder of the Zeese-Wilkinson Company, New York, photographers.