Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 2010)

Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 2012)

Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 2019)

Denkschriften der Königlich-Baierischen Botanischen Gesellschaft in Regensburg - Regensburgische Botanische Gesellschaft. (In Commission der Montag- und Weissischen Buchh, 1861)

Index Kewensis plantarum phanerogamarum : nomina et synonym omnium generum et specierum a linnaeo usque as annum MDCCLXXXV complectans nomine recepro auctore patria unicuique planta subjectis : sumptibus beati Caroli Roberti Darwin ductu et consilio Josephi D. Hooker Tomus 1-2 = Index Kewensis : an enumeration of the genera and species of flowering plants from the time of Linnaeus to the year 1885 inclusive together with their authors names, the works in which they were first published, their native countries and thei - Hooker, Joseph Dalton, 1817 -1911 (Clarendon Press, 1893)

Manual of the botany (Phænogamia and Pteridophyta) of the Rocky mountain region, from New Mexico to the British boundary - Coulter, John Merle, 1851 -1928 (Ivison, Blakeman, Taylor, and Company, 1885)

Novon a journal of botanical nomenclature from the Missouri Botanical Garden - Missouri Botanical Garden. (Missouri Botanical Garden, 2002)