Joseph Ewan
American botanist (1909–1999)

Joseph Andorfer Ewan (1909–1999) was an American botanist, naturalist, and historian of botany and natural history.
Biography
Joseph Ewan grew up in Los Angeles and developed an early interest in the study of nature. At the age of eighteen, he published an ornithological report in The Condor. He matriculated at UCLA and transferred to the University of California, Berkeley in 1933, graduating there with a B.A. in 1934. After graduating he remained at Berkeley until 1937 as a research assistant to Willis Jepson. In 1935 Ewan married a fellow botanical student, Ada Nesta Dunn (1908–2000), in Reno, Nevada. She often collaborated with him on their publications. He was from 1937 to 1944 an instructor at the University of Colorado, from 1944 to 1945 a botanist with the Foreign Economic Administration, from 1945 to 1946 an assistant curator at the Smithsonian Institution, and from 1946 to 1947 an associate botanist at the USDA's Bureau of Plant Industry. At Tulane University he became in 1947 an assistant professor and was eventually promoted to associate professor, and then full professor. There he held the Ida Richard Professorship from 1972 to 1977, when he retired as professor emeritus.
Begin with the source’s own compact description: “Joseph Ewan” is american botanist (1909–1999). The dossier treats that line as a proposition to test through Joseph, Ewan and American, not as a finished interpretation.
Why this record matters
The phrase “american botanist (1909–1999)” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated May 1, 2026. The linked authority identifier is Q3184495. VIAF identifies the subject as 71565733. The Library of Congress control number is n50010893. 1 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1909, 1999, 1933 and 1934.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Joseph Ewan”, its source revision and the description used here.
- Expand the search: follow Joseph Ewan primary sources, Joseph Ewan archive and Joseph research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Joseph Ewan”?
- Which institution is responsible for the underlying evidence?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “Joseph Ewan” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.