Epilobium nevadense is a rare and vulnerable species of flowering plant in the willowherb family Onagraceae. It is known from a few scattered populations in mountain ranges in Nevada, Utah, and northwestern Arizona. It grows on talus slopes composed of either volcanic or limestone origin at feet in elevation.Nevada Natural Heritage Program profile for Epilobium nevadense http://heritage.nv.gov/taxon_detail/19451 Arizona Natural Heritage Program profile for Epilobium nevadense https://drive.google.com/drive/folders/0BwLs0i-QWFssaFoxRzV6cEl0MTQSEINet collection records for Epilobium nevadense http://swbiodiversity.org/seinet/taxa/index.php?taxon=82563
The nearest known relative of Nevada willowherb is Snow Mountain willowherb (Epilobium nivium), which has a similar appearance and grows in similar habitats. These two species together form Epilobium sect. Cordylophorurn subsect. Petrolobium and have been shown to form infertile hybrids in cultivation.Seavey, S. & P. Raven. Experimental hybrids in Epilobium (including sect. Zauschneria) species with N = 15 (Onagraceae). American Journal of Botany, Vol. 64, No. 4 (Apr, 1977), pp. 439-442.Raven, P. Generic and sectional delimitation in Onagraceae, tribe Epilobieae. Annals of the Missouri Botanical Garden, Vol. 63, No. 2. (1976), pp. 326-340. https://www.biodiversitylibrary.org/part/23802
References