> [!cite] BHL link: this entry starts at [page 515](https://www.biodiversitylibrary.org/page/33068757) of TL-2 Vol. II
> Author links: [IPNI](https://www.ipni.org/a/4706-1) LSID 4706-1, [Wikidata](https://www.wikidata.org/wiki/Q18631896) QID Q18631896
> Support pages: [[Abbreviations|abbreviations]], [[Layout key|layout key]], [[Cite TL-2|cite TL-2]]
### Author
Keller, Ida Augusta (1866-1932), German-born American botanist and high school teacher; Dr. phil. Zürich 1890; lecturer at Bryn Mawr College, Philadelphia 1891-1892; from 1893at the Girl's High School ib.
**Abbreviated name**: *I. Keller* \[standard form in IPNI: *I.Keller*\]
#### Herbarium and types
[[Collection PH|PH]].
#### Bibliography and biography
Barnhart 2: 278; BL 1: 211, 304; CSP 16: 228; IH 2: 349; Tucker 1: 383.
- Barnhart, J. H., *in* F. W. Pennell, Scrophulariac. eastern temperate N. America (Monogr. Acad. nat. Sci. Philadelphia 1) p. 611. 1935.
- Harshberger, J. W., Bot. Philadelphia 380-382. 1899 (bibl.).
- Pennell, Bartonia 22: 21, 23. 1943.
- Phillips, V. T. and M. E., Guide mss. Coll. Acad. Phila. p. 484 \[index\]. 1963.
### Publications
##### n.3566. Handbook of the flora of Philadelphia
**Title**
*Handbook of the flora of Philadelphia* and vicinity containing data relating to the plants within the following radius: eastern Pennsylvania, north to the Blue Mountains, and west to the Susquehanna; all of New Jersey except the northern counties; and New Castle County, Delaware. With keys for identification of species... Philadelphia, Pa. (Philadelphia Botanical Club) 1905.
**Abbreviated title**: *Handb. fl. Philadelphia*.
**Notes**
*Co-author*: Stewardson Brown (1867-1921), see TL-2/1: 839.
*Publ*.: 1905 (TBC 8 Feb 1906), p. \[1\]-5, \[i\]-viii, \[7-360\]. *Copies*: MO, NY(2). – The key to the 85 species of *Crataegus* is by Benjamin Hayes Smith (1841-1918).
*Additions*: Long, Bartonia 8: 12-32. 1924, 10: 30-52. 1929.
*Ref*.: Barnhart, J. H., Torreya 6(2): 37-38. 19 Feb 1906.