Examined for Flora of North America. Leaf material removed for DNA extraction. Phylogeny of Asclepias.
Noel H. Holmgren
10912
1985-06-24
24 June 1985
Patricia K. Holmgren; C. Sue Keller
United States, Utah, Garfield, Along the Burr Trail (Boulder-Water Pocket Fold road), 'The Gulch', 11km (7 mi) air distance southeast (120 deg.) of Boulder.