| 2018 | "Vascular Plants of Eagle Creek Campground, Trinity County" in Botanical Studies OER |
| 2018 | "The Herbarium" in Botanical Studies OER |
| 2017 | "The Scientific Names of Plants" in Botanical Studies OER |
| 2017 | "Publication Dates of Selected Vascular Plant Families" in Botanical Studies OER |
| 2017 | "The Systematics of Vascular Plants: A Bibliography" in Botanical Studies OER |
| 2017 | "A Chronicle of Economic Botany" in Botanical Studies OER |
| 2017 | "Exploring for Plants: A Bibliography" in Botanical Studies OER |
| 2017 | "Plant Domestication" in Botanical Studies OER |
| 2017 | "Food Plants: A Bibliography" in Botanical Studies OER |
| 2017 | "Economically Important Plants Arranged Systematically" in Botanical Studies OER |
| 2017 | "Economic Botany: General References" in Botanical Studies OER |
| 2017 | "Psychoactive Plants: A Bibliography" in Botanical Studies OER |
| 2017 | "The Spaghetti Tree" in Botanical Studies OER |
| 2017 | "Useful Plants – Ethnobotanical Studies: A Bibliography" in Botanical Studies OER |
| 2017 | "California Vascular Plants: A Numerical Conspectus As Seen in Six Standard Floras" in Botanical Studies OER |
| 2017 | "A Checklist of the Vascular Plants of the Deadfall Lakes Area, Trinity County, California" in Botanical Studies OER |
| 2017 | "Checklist of the Vascular Plants of the Kangaroo Lake Area Siskiyou County, California" in Botanical Studies OER |
| 2017 | "Vascular Plants of Preston Peak, Siskiyou County" in Botanical Studies OER |
| 2017 | "Vascular Plants of the Horse Mountain Serpentines Humboldt County, California" in Botanical Studies OER |
| 2017 | "Vascular Plants of the Scott Mountain Campground Area Trinity and Siskiyou Counties, California" in Botanical Studies OER |
| 2017 | "Vascular Plants of Trinidad Head, Humboldt County, California" in Botanical Studies OER |
| 2017 | "An Annotated Checklist of the Vascular Plants of Oklahoma" in Botanical Studies OER |
| 2017 | "Oklahoma Vascular Plants - A Numerical Conspectus" in Botanical Studies OER |
| 2017 | "Grass Floras, Manuals, and Checklist" in Botanical Studies OER |
| 2017 | "The Earth's Grass Flora: A Numerical Conspectus (A Comparison of Seventeen Summaries)" in Botanical Studies OER |
| 2017 | "Rare, Endangered, and Threatened Grasses of the Conterminous United States" in Botanical Studies OER |
| 2017 | "Grasses of the United States: Number of Genera and Taxa by State" in Botanical Studies OER |
| 2017 | "The Subfamilies & Tribes of the Grasses of the United States: Evolving Concepts" in Botanical Studies OER |
| 2017 | "Medical Plants - General References" in Botanical Studies OER |
| 2017 | "Collection and Preparation of Vascular Plant Specimens" in Botanical Studies OER |
| 2017 | "Dichotomous Keys - Their Structure and Use" in Botanical Studies OER |
| 2017 | "Botanist and Plant Exploration on the Pacific Coast of North America: A Bibliography" in Botanical Studies OER |
| 2015 | "California Ethnobotany: A Bibliography" in Botanical Studies OER |
| 2014 | Field guide to California grasses |
| 2014 | "Vascular Plants of Big Lagoon County Park Humboldt County, California" in Botanical Studies OER |
| 2014 | "Plants of the Humboldt State University Campus" in Botanical Studies OER |
| 2010 | "Science Complex Conifer Collection; Humboldt State University Campus" in Botanical Studies OER |
| 2010 | "Vascular Plants of French Hill Road, Del Norte County" in Botanical Studies OER |
| 2009 | "Vascular Plants of South Fork Mountain, Humboldt & Trinity Counties" in Botanical Studies OER |
| 2006 | "Plants & Civilization; An Introduction to the Interrelationships of Plants and People" in Botanical Studies OER |
| 2005 | "Agrostology; An Introduction to the Systematics of Grasses" in Botanical Studies OER |
| 2004 | "Vascular Plants of the Russian Peak Area Siskiyou County, California" in Botanical Studies OER |
| 2003 | "The Autumnal Feast of the Mad River People" in Botanical Studies OER |
| 2002 | "Vascular Plants of Grays Falls Campground Trinity County, California" in Botanical Studies OER |
