Harvard University Herbaria & Libraries

Asteraceae
GH: 02021595 Cirsium parryi (A. Gray) Petrak USA: Colorado Bear Creek Trail, Ouray A. Nelson 9816 1920-8-12
Boraginaceae
GH: 01997993 Mertensia lanceolata (Pursh) de Candolle USA: Colorado Palmer Lake A. Nelson 10515 1920-5-20
GH: 02058189 Mertensia lanceolata nivalis (S. Watson) L. C. Higgins USA: Colorado Horse Thief Trail (timberline), Ouray A. Nelson 9828 1920-8-10
GH: 02058197 Mertensia lanceolata nivalis (S. Watson) L. C. Higgins USA: Colorado Monarch Pass; Salida - Gunnison A. Nelson 1920-8-5
Orobanchaceae
GH: 02080330 Pedicularis centranthera A. Gray USA: Arizona Flagstaff: in the Coconino Forest A. Nelson 10188 1920-4-19
Rosaceae
GH: 01862303 Peraphyllum ramosissimum Nuttall USA: Colorado Cerro Summit A. Nelson 9825 1920-8-6
Rutaceae
GH: 01545841 Ptelea crenulata Greene USA: Colorado Cañon City; Royal Gorge A. Nelson 1920-8-4