| 2022 | "Biographical Sketch: Nikolai Ivanovich Vavilov" in Botanical Studies OER |
| 2022 | "Biographical Sketch: Richard Evans Schultes" in Botanical Studies OER |
| 2022 | "An Annotated List Of The Poisonous And Injurious Vascular Plants Of The United States" in Botanical Studies OER |
| 2022 | "Food Plants With Toxic Properties" in Botanical Studies OER |
| 2022 | "Mechanically Injurious Plants" in Botanical Studies OER |
| 2022 | "Poisonous Plants: A Glossary Of Commonly Used Terms" in Botanical Studies OER |
| 2022 | "Poisonous Plants of Home and Garden" in Botanical Studies OER |
| 2022 | "Purposeful Use Of Poisonous Plants" in Botanical Studies OER |
| 2022 | "Two Hemlocks" in Botanical Studies OER |
| 2021 | "Derivation of the Generic Names of North American Grasses (Names in Current or Recent Use)" in Botanical Studies OER |
| 2020 | "List of the Federal and State-listed Rare, Endangered, & Threatened Plants of California" in Botanical Studies OER |
| 2020 | "Vascular Plants of the Klamath-Siskiyou Region of California and Oregon: A Numerical Conspectus" in Botanical Studies OER |
| 2020 | "Vascular Plants Endemic to the Klamath-Siskiyou Region" in Botanical Studies OER |
| 2020 | "Vascular Plant Families of the United States (with Common Names and Numerical Summary)" in Botanical Studies OER |
| 2020 | "Poisonous and Injurious Plants of the United States: A Bibliography" in Botanical Studies OER |
| 2020 | "A Checklist of Vascular Plants Endemic to California" in Botanical Studies OER |
| 2020 | "A List of the Rare, Endangered, & Threatened Vascular Plants of California" in Botanical Studies OER |
| 2019 | "Checklist of the Families and Genera of Vascular Plants of California" in Botanical Studies OER |
| 2019 | "Biographical Sketch: Willis Linn Jepson" in Botanical Studies OER |
| 2019 | "A Checklist of the Vascular Plants of the Trinity Alps" in Botanical Studies OER |
| 2019 | The Vascular Plants of Northwestern California: A Catalog |
| 2019 | "California Floras, Manuals, and Checklists: A Bibliography" in Botanical Studies OER |
| 2019 | "Families of California Vascular Plants: Evolving Concepts and Discoveries" in Botanical Studies OER |
| 2019 | "California Vascular Plant Families: A Munz, Hickman, & Baldwin Nomenclator" in Botanical Studies OER |
| 2019 | "The Weed Flora of California: A Checklist" in Botanical Studies OER |
| 2019 | "A Checklist of the Vascular Plants of Scott Mountain" in Botanical Studies OER |
| 2019 | "Vascular Plants of the Big and Little Duck Lakes (Siskiyou County, California)" in Botanical Studies OER |
| 2019 | "Vascular Plants of Horse Mountain (Humboldt County, California)" in Botanical Studies OER |
| 2019 | "Vascular Plants of the Coastal Dunes of Humboldt County, California" in Botanical Studies OER |
| 2019 | "Vascular Plants of the Stony Creek Bog Area Del Norte County, California" in Botanical Studies OER |
| 2019 | "The Vascular Plant Flora of Oklahoma - A Bibliography" in Botanical Studies OER |
| 2019 | "An Index to the Families and Genera Treated in Flora of North America North of Mexico" in Botanical Studies OER |
| 2019 | "Rare, Endangered, and Threatened Vascular Plants of North America: A Bibliography" in Botanical Studies OER |
| 2019 | "North America Floras, Manuals, & Checklist: A Bibliography" in Botanical Studies OER |
| 2019 | "Vascular Plant Families and Genera Endemic to the Conterminous United States" in Botanical Studies OER |
| 2019 | "The Families and Genera of Vascular Plants of the Conterminous United States" in Botanical Studies OER |
| 2019 | "Vascular Plant Families of the United States Grouped by Diagnostic Features" in Botanical Studies OER |
| 2019 | "Grasses Endemic to the Conterminous United States" in Botanical Studies OER |
| 2019 | "Grasses of the Conterminous United States: Persons after Whom Grasses Have Been Named" in Botanical Studies OER |
| 2018 | "California Vascular Plants: Are Some of Them Still Out There?" in Botanical Studies OER |
| 2018 | "Checklist of the Vascular Plants of Redwood National Park" in Botanical Studies OER |
| 2018 | "Checklist of the Vascular Plants of the Arcata Marsh & Wildlife Sanctuary, Humboldt County" in Botanical Studies OER |
| 2018 | "Checklist of the Vascular Plants of the Walker Ridge and Bear Valley Area, Lake and Colusa Counties" in Botanical Studies OER |
| 2018 | "Vascular Plants of Cook and Green Pass, Siskiyou County" in Botanical Studies OER |
| 2018 | "Vascular Plants of Bear Valley (Colusa County, California)" in Botanical Studies OER |
| 2018 | "Vascular Plants of Eagle Creek Campground, Trinity County" in Botanical Studies OER |
| 2018 | "The Herbarium" in Botanical Studies OER |
| 2018 | "Biographical Sketch: Sir Joseph Banks" in Botanical Studies OER |
| 2018 | "Biographical Sketch: Mary Agnes Chase" in Botanical Studies OER |
| 2018 | “Biographical Sketch: Albert Spear Hitchcock” in Botanical Studies OER |
