> [!cite] BHL link: this entry starts at [page 1014](https://www.biodiversitylibrary.org/page/33190485) of TL-2 Vol. IV
> Author links: [IPNI](https://www.ipni.org/a/8771-1) LSID 8771-1, [Wikidata](https://www.wikidata.org/wiki/Q1905130) QID Q1905130
> Support pages: [[Abbreviations|abbreviations]], [[Layout key|layout key]], [[Cite TL-2|cite TL-2]]
### Author
Rydberg, Pehr Axel (1860-1931), Swedish botanist; studied at Skara high school; emigrated to the United States 1882; teacher at Luther Academy, Wahon, Nebraska 1884-1890; studied at Lincoln Univ., Nebraska 1890-1895; student of C.E. Bessey; professor of natural sciences and mathematics Upsala College, Kenilworth, New Jersey 1895-1899; Dr. phil. Columbia Univ. 1898; assistant curator New York Botanical Garden 1899-1905; curator ib. 1906-1931.
**Abbreviated name**: *Rydb.* \[standard form in IPNI: *Rydb.*\]
#### Herbarium and types
[[Collection NY|NY]] (35.000); duplicates in many herbaria, e.g.; [[Collection A|A]], [[Collection B|B]] (mainly destr.), [[Collection BUF|BUF]], [[Collection C|C]], [[Collection CS|CS]], [[Collection E|E]], [[Collection GH|GH]], [[Collection HBG|HBG]], [[Collection K|K]], [[Collection KANU|KANU]], [[Collection KSC|KSC]], [[Collection L|L]], [[Collection LE|LE]], [[Collection MIN|MIN]], [[Collection MO|MO]], [[Collection MONT|MONT]], [[Collection MONTU|MONTU]], [[Collection NEB|NEB]], [[Collection NMC|NMC]], [[Collection NY|NY]], [[Collection NYS|NYS]], [[Collection RM|RM]], [[Collection US|US]]. Field notes books Montana (1896), Utah and New Jersey (1905-1908), Kansas (1929) and Western United States at [[Collection NY|NY]]. – Smithsonian Archives SIA 220, 221, 222, 224, 226, 227, 239, HI 107.
#### Bibliography and biography
Barnhart 3: 196 (b. 6 Jul 1860, d. 25 Jul 1931); BFM no. 1601, 1602; BJI 2: 50, 150; BL 1: 145, 162, 170, 195, 196, 214, 316; BM 4: 1775, 1940, 8: 1119; Bossert p. 343; CSP 18: 377; DAB 16: 269-270 (by J.H. Barnhart); Ewan ed. 1: 355 \[index\], ed. 2: 191; Hawksworth p. 185; Hirsch p. 256; Hortus 3: 1203; IH 1 (ed. 2): 88, (ed. 3): 111, (ed. 6): 363, (ed. 7): 341, 2: (files); Kew 4: 556; KR p. 610-612; Langman p. 659-660; Lenley p. 357; MW p. 421; NAF 28B(2): 355-356; NI 1706; NW p. 56; PH 209, 450; Rehder 5: 747-748; RS p. 138; SO 2913-2914, 2918, 2957; Stevenson p. 1256; TL-1/1129; TL-2/779, 781, see T.D.A. Cockerell; Tucker 1: 615; Urban-Berl. p. 390; Zander ed. 10, p. 710, ed. 11, p. 810.
#### Biofile
- Allison, E.M., Univ. Colo. Studies 6: 73, 74. 1909 (coll. Colorado).
- Anon., Columbia Alumni News 23: 14. 1931 (d.).; The Grace abounding 20(7), August 1931 (obit., role in Lutheran church); J. New York Bot. Gard. 1: 35. 1900 (accession Rydberg herb.); Torreya 31: 128. 1931 (d.).
- Barnhart, J.H., J. New York Bot. Gard. 32: 229-233. 1931 (obit., portr.).
- Becker, H.F., Gard. J. 10: 68-69. 1960 (letter T.D.A. Cockerell to P.A. Rydberg).
- Blankinship, J.W., Montana Agric. Col. Stud. Bot. 1: 13-14, 23. 1905 (bibl. Montana; expl. Montana).
- Boone, W., Hist. bot. W. Virginia 175, 178. 1965.
- Cattell, J.M., Amer. men sci. 276-277. 1906, ed. 2: 405. 1910.
- Ewan, J. et al., Short hist. bot. U.S. 19. 1969.
- Jones, M.E., Contr. West. Bot. 18: 141-142. 1935 (personal recollections; subordinated his judgement to that of Britton "for the sake of financial support"; "silly Astragaloid genera").
- Murrill, W.A., Hist. found. bot. Florida 20. 1945.
- Pennell, F.W. & J.H. Barnhart, Monogr. Acad. Nat. Sci. Philadelphia 1: 618. 1935.
- Reveal, J., *in* A. Cronquist et al., Intermountain fl. 1: 63, 64. 1972.
- Rickett, H.W., Index Bull. Torrey bot. Cl. 85-87. 1955 (bibl. of his numerous contributions).
- Rydberg, P.A., Scandinavians who have contributed to the knowledge of the flora of North America, Augustana Library Publ. 1907, Contr. New York Bot. Gard. 100, 1907; p. 42-43 on Rydberg himself.
- Sargent, C.S., Silva 14: 69-70. 1902 (biogr. note).
- Small, J.K., Fl. S.E. United States 1903, see preface.
- Verdoorn, F., ed., Chron. bot. 6: 235. 1941.
#### Composite works
Contributions to NAF:
*Sparganiaceae*, 17(1): 5-10. 30 Jun 1909.
*Elodeaceae*, 17(1): 67-71. 30 Jun 1909.
*Hydrocharitaceae*, 17(1): 71-74. 30 Jun 1909.
*Portulacaceae*, 21(4): 279-328. 29 Dec 1932.
*Penthoraceae*, 22(1): 75. 22 Mai 1905, 22(6): 548. 30 Dec 1918.
*Parnassiaceae*, 22(1): 77-80. 22 Mai 1905, 22(6): 548-549. 1918.
*Hydrangeaceae*, 22(2): 159-178. 18 Dec 1905, 22(6): 555-557. 30 Dec 1928. *Phyllonomaceae*, 22(2): 191. 18 Dec 1905.
*Rosaceae*, 22(3): 239-292. 12 Jun 1908, 22(4): 293-388. 20 Nov 1908, 22(5): 389-480. 23 Dec 1913, 22(6): 481-533. 30 Dec 1918.
*Saxifragaceae* add., with J.K. Small, 22(6): 549-555. 30 Dec 1918.
*Fabaceae*, 24(1): 1-34. 25 Apr 1919, 24(2): 65-136. 22 Jan 1920, 24(3): 137-200. 16 Jul 1923, 24.(4): 201-250. 4 Oct 1924, 24(5): 251-314. 19 Feb 1929, 24(6): 315-378. 15 Mai 1929, 24(7): 379-462. 26 Jul 1929.
*Balsaminaceae*, 25(2): 93-96. 3 Jun 1910.
*Limnanthaceae*, 25(2): 97-100. 3 Jun 1910.
*Zygophyllaceae*, with A.M. Vail, 25(2): 103-116. 3 Jan 1910.
*Lennoaceae*, 29(1): 19-20. 31 Aug 1914.
*Pyrolaceae*, 29(1): 21-32. 31 Aug 1914.
*Ericaceae*, 29(1): 33-102. 31 Aug 1914.
*Carduales*, 33(1): I. 15 Sep 1922.
*Ambrosiaceae*, 33(1): 3-44. 15 Sep 1922.
*Carduaceae*, 33(1): 45-46. 15 Sep 1922, 34(1): 1-75. 31 Dec 1914, 34(2): 83-146. 28 Jul 1915, 34(2): 147-180. 28 Jul 1915, 34(3): 181-216. 29 Dec 1916, 34(3): 217-288. 29 Dec 1916, 34(4): 289-301. 22 Jun 1927, 34(4): 303-308. 22 Jun 1927, 34(4): 309-360. 22 Jun 1927.
#### Eponymy
*Rydbergia* E.L. Greene (1898); *Rydbergiella* F. Fedde et P. Sydow. (1906).
### Publications
##### n.9847. Flora of Nebraska
**Title**
University of Nebraska. *Flora of Nebraska*. Published by the Botanical Seminar. xvi. Part 21. *Resales*. Lincoln, 1895. (issued December 30, 1895).
**Abbreviated title**: *Fl. Nebr., Resales*.
**Notes**
*Publ*.: 30 Dec 1895, p. \[1\]-82. *Copies*: BR, G, HH. – Title on cover: "*Flora of Nebraska*" Edited by the members of the Botanical Seminar of the University of Nebraska. Part 21. *Resales*. Lincoln, Nebraska, U.S.A. Published by the Seminar 1895". Editorial committee: C.E. Bessey, Roscoe Pound, F.E. Clements.
*Preliminary publication*: "A revision of the nomenclature of the Nebraska Polypetalae" in Bot. Surv. Nebraska 3: 20-39. 18 Jun 1894.
*Ref*.: Small, J.K., Bull. Torrey bot. Club 23(5): 217. 1896.
##### n.9848. Flora of the Sand Hills of Nebraska
**Title**
U.S. Department of Agriculture, Division of Botany... *Flora of the Sand Hills of Nebraska*... Washington (Government Printing Office) 1895. Oct.
**Notes**
*Publ*.: 14 Sep 1895, p. \[i\]-v, 133-203, *pl. 1-2. Copies*: G, HH, MO, NY, PH, U, US, USDA. – Issued and to be cited as Contr. U.S. natl. Herb. 3(3): i-v, 133-203, *pl. 1-2.* 1895. See BL 1: 196.
##### n.9849. Flora of the Black Hills of South Dakota
**Title**
U.S. Department of Agriculture. Division of botany... *Flora of the Black Hills of South Dakota*... Washington (Government Printing Office) 1896. Oct.
**Notes**
*Publ*.: 13 Jun 1896, p. \[i\]-v, 463-536, *pl. 18-20. Copies*: BR, HH, MO, NY, PH, U, US, USDA. – Issued and to be cited as Contr. U.S. natl. Herb. 3(8): \[i\]-v, i-iv, 463-536.
*pl. 18-30.*
*Additions*: A.C. Mcintosh, Black Hills Engineer 16: 160-167. 1928 (fide BL).
##### n.9850. Notes on Potentilla
**Title**
Contributions from the Herbarium of Columbia College... *Notes on Potentilla*. i-iv, New York 1896-1897. Oct.
**Notes**
*Publ*.: A series papers published in Bull. Torrey bot. Club 23-24, 1896-1897 ("Bull.") and published as reprints in the series Contr. Herb. Columbia Coll. ("Contr.").
*1*: Jun 1896, Contr. no. 96; Bull. 23: 244-248. Jun 1896.
*2*: Jul 1896, Contr. no. 96 (combined with no. 1); Bull. 23: 259-265. Jul 1896.
*3*: Aug 1896, Contr. no. 99; Bull. 23: 301-306. Aug 1896.
*4*: Oct 1896, Contr. no. 103; Bull. 23: 394-399, *pl. 274-275.* Oct 1896.
*5*: Nov 1896, Contr. no. 105; Bull. 23: 411-435, *pl. 276-277.* Nov 1896.
*6*: 28 Jan 1897, Contr. no. 110; Bull. 24: 1-13, *pl. 287-288.* 28 Jan 1877.
##### n.9851. The North American species of Physalis
**Title**
*The North American species of Physalis* and related genera... Memoirs of the Torrey Botanical Club vol. iv. no. 5. 1896. Oct.
**Notes**
*Publ*.: 15 Sep 1896, cover-t.p., p. \[297\]-394. *Copy*: HH. – Issued as and to be cited from Mem. Torrey bot. Club 4(5). 1896.
##### n.9852. grasses and forage plants of the Rocky Mountain region
**Title**
A report upon the *grasses and forage plants of the Rocky Mountain region*... Washington (Government Printing Office) 1897. Oct.
**Abbreviated title**: *Grass. forage pl. Rocky Mt.*
**Notes**
*Publ*.: 1897 (p. 2: 20 Nov 1896), p. \[1\]-48. *Copy*: USDA. – Bull. 5, U.S. Dept. Agr. Div. Agrost.
##### n.9853. A monograph of the North American Potentilleae
**Title**
*A monograph of the North American Potentilleae*. \[Memoirs from the Department of Botany of Columbia University. Vol. ii.\] issued November 25th, 1898. Qu.
**Abbreviated title**: *Monogr. N. Amer. Potent.*
**Notes**
*Publ*.: 25 Nov 1898 (t.p.), p. \[i-iv\], \[1\]-223, \[224\], *pl. 1-112* (drawings by F. Emil and author). *Copies*: G, NY, PH, US \[imprint: "New York, 1898"\], USDA. – See also his *Notes on Potentilla* 1-6, Bull. Torrey bot. Club 23 and 24, 1896-1897 (Contr. Herb. Columbia College). Further studies on Potentilla, ib. 28: 173-183. 1901 and *Notes on Rosaceae* 4, ib. 37: 487-502. 1900.
##### n.9854. New species from the western United States
**Title**
Contributions from the New York Botanical Garden – no. 2. *New species from the western United States*... New York 1899. Oct.
**Notes**
*Publ*.: 16 Oct 1899, cover t.p., p. 541-546. *Copy*: U. – Reprinted and to be cited from Bull. Torrey bot. Club 26: 541-546. 16 Oct 1899.
##### n.9855. Delphinium carolinianum
**Title**
Contributions from the New York Botanical Garden – no. 4. *Delphinium carolinianum* and related species... New York 1899. Oct.
**Notes**
*Publ*.: 15 Nov 1899, cover-t.p., p. 582-587. *Copy*: U. – Reprinted and to be cited from Bull. Torrey bot. Club 26: 582-587. 15 Nov 1899.
##### n.9856. Studies on the Rocky Mountain flora
**Title**
Contributions from the New York Botanical Garden... *Studies on the Rocky Mountain flora* i-xxix, New York 1900-1913. Oct.
**Notes**
*Publ*.: A series of 29 papers published in Bull. Torrey bot. Club 27-40. 1900-1913 ("Bull.") and published as reprints in the series Contr. N.Y. Bot. Gard. ("Contr.").
*1*: 21 Apr 1900, Contr. no. 5; Bull. 27: 169-189. 21 Apr 1900.
*2*: 26 Oct 1900, Contr. no. 9, Bull. 27: 528-538. 26 Oct 1900.
*3*: 29 Dec 1900, Contr. no. 10, Bull. 27: 614-636. 29 Dec 1900.
*4*: 31 Jan 1901, Contr. no. 12, Bull. 28: 20-38. 31 Jan 1901.
*5*: 21 Mai 1901, Contr. no. 14, Bull. 28: 266-284. 266-284. 21 Mai 1901.
*6*: 30 Sep 1901, Contr. no. 15, Bull. 28: 499-513. 30 Sep 1901.
*7*: 24 Mar 1902, Contr. no. 22, Bull. 29: 145-160. 24 Mar 1902.
*8*: 24 Apr 1902, Contr. no. 23, Bull. 29: 232-246. 24 Apr 1902.
*9*: 30 Dec 1902, Contr. no. 30, Bull. 29: 480-693. Dec 1902.
*10*: 24 Apr 1903, Contr. no. 30, Bull. 30: 247-262. Apr 1903.
*11*: 29 Jul 1904, Contr. no. 55, Bull. 399-410. Jul 1904.
*12*: 1 Nov 1904, Contr. no. 59, Bull. 31: 555-575. Oct 1904.
*13*: 9 Jan 1905, Contr. no. 62, Bull. 31: 631-655. Dec 1904.
*14*: 19 Apr 1905. Contr. no. 66, Bull. 32: 123-168. 1905.
*15*: 6 Dec 1905, Contr. no. 73, Bull. 32: 597-610. 1905.
*16*: 7 Apr 1906, Contr. no. 82, Bull. 33: 137-161. 1906.
*17*: 27 Feb 1907, Contr. no. 87, Bull. 34: 35-50. 1907.
*18*: 10 Oct 1907, Contr. no 96, Bull. 34: 417-437. 1907.
*19*: 1 Oct 1909, Contr. no. 128, Bull. 36: 511-541. 1 Oct 1907.
*20*: 28 Dec 1909, Contr. no. 129. Bull. 36: 675-698. 28 Dec 1909.
*21*: 31 Mar 1910, Contr. no. 131, Bull. 37: 127-148. 31 Mar 1910.
*22*: 21 Jul 1910, Contr. no. 134, Bull. 37: 313-335. 21 Jul 1910.
*23*: 5 Oct 1910, Contr. no. 137, Bull. 37: 443-471. 5 Oct 1910.
*24*: 30 Nov 1910, Contr. no. 140, Bull. 37: 541-557. 30 Nov 1910.
*25*: 15 Feb 1911, Contr. no. 141, Bull. 38: 11-23. 15 Feb 1911.
*26*: 13 Apr 1912, Contr. no. 151, Bull. 39: 99-111. 13 Apr 1912.
*27*: 23 Jul 1912, Contr. no. 153, Bull. 39: 301-328. 23 Jul 1912.
*28*: 18 Mar 1913, Contr. no. 156, Bull. 40: 43-74. 18 Mar 1913.
*29*: 12 Sep 1913, Contr. no. 160, Bull. 40: 461-485. 12 Sep 1913.
##### n.9857. Catalogue of the flora of Montana
**Title**
*Catalogue of the flora of Montana* and the Yellowstone National Park... New York 1900. Oct.
**Abbreviated title**: *Cat. fl. Montana*.
**Notes**
*Publ*.: 15 Feb 1900, p. \[i\]-xi, \[1\]-492. *Copies*: BR, HH, MO, NY, PH, US, USDA; IDC 7615. – Issued as Mem. New York Bot. Gard. vol. I. See also his *Rarities from Montana*, Bull. Torrey bot. Club 24: 188-192, 243-253, 292-299, *pl. 304-307.* 1897, and his *Composition of the Rocky Mountain Flora*, Science, ser. 2. 12: 870-873. 1900.
*Supplement*: J.W. Blankinship, Montana Agric. Coll. Sci. Stud. 1: 33-109. 1905.
*Ref*.: Nelson, A., Bot. Gaz. 30: 61-64. 1900.
##### n.9858. The American species of Limnorchis and Piperia
**Title**
Contributions from the New York Botanical Garden – no. 19. *The American species of Limnorchis and Piperia*, north of Mexico... New York 1901. Oct.
**Notes**
*Publ*.: 25 Nov 1901, cover-t.p., p. 605-643. *Copy*: U. – Reprinted and to be cited from Bull. Torrey bot. Club 28: 605-643. 25 Nov 1901.
##### n.9859. Some generic segregat- ions
**Title**
Contributions from the New York Botanical Garden – n. 37. *Some generic segregations*... New York 1903. Oct.
**Notes**
*Publ*.: 16 Mai 1903, cover-t.p., p. 271-281. *Copy*: U. – Reprinted and to be cited from Bull. Torrey bot. Club 30: 271-281. Mai 1903.
##### n.9860. Astragalus and its segregates
**Title**
Contributions from the New York Botanical Garden – no. 76, *Astragalus and its segregates* as represented in Colorado... New York 1906. Oct.
**Notes**
*Publ*.: 22 Jan 1906, cover-t.p., p. 657-669. *Copy*: U. – Reprinted and to be cited from Bull. Torrey bot. Club 32: 657-658. 1906.
##### n.9861. Flora of Colorado
**Title**
*Flora of Colorado*... Fort Collins, Colorado (published by the Experiment Station) 1906. Oct.
**Abbreviated title**: *Fl. Colorado*.
**Notes**
*Publ*.: Aug 1906 (see J. New York Bot. Gard. 7: 217. Sep 1906 and Bull. Torrey bot. Club 33: 511. 5 Oct 1906, inf. J.W. Landon), p. \[i\]-xxii, \[1\]-447, \[448, err.\]. *Copies*: FH, G, HH, MICH, MO, NY, PH, US, USDA. – Published as Bulletin 100, Agric. Exp. Station, Colorado Agric. Coll.
*Ref*.: Nelson, Aven, Torreya 6: 237-239. 26 Nov 1906 (rev.).
##### n.9862. Notes on Philotria
**Title**
Contributions from the New York Botanical Garden – no. 112. *Notes on Philotria* Raf.... New York 1908. Oct.
**Notes**
*Publ*.: 29 Sep 1908, cover-t.p., p. 457-465. *Copy*: U. – Reprinted and to be cited from Bull. Torrey bot. Club 35: 457-465. 29 Sep 1908.
##### n.9863. Notes on Rosaceae
**Title**
*Notes on Rosaceae* i-xiv.... New York 1908-1923. Oct.
**Notes**
*Publ*.: A series of papers published in *Bull. Torrey bot. Club* ("Bull.") and reprinted in *Contr. N.Y. Bot. Gard.* ("Contr."). *Copy*: U.
*1*: 30 Nov 1908, Bull. 35: 535-542. No 1908, Contr. 46.
*2*: 14 Aug 1909, Bull. 36: 397-407. 14 Aug 1909, Contr. 125.
*3*: 29 Jul 1910, Bull. 37: 375-386. 29 Jul 1910, Contr. 136.
*4*: 28 Oct 1910, Bull. 37: 487-502. 28 Oct 1910, Contr. 138.
*5*: 7 Mar 1911, Bull. 38: 78-89. 7 Mar 1911, Contr. 142.
*6*: 21 Aug 1911, Bull. 38: 351-368. 21 Aug 1911, Contr. 145.
*7*: 22 Jul 1914, Bull. 41: 399-332. 2 Jul 1914. Contr. 170.
*8*: 29 Oct 1914, Bull. 41: 483-503. 29 Oct 1914, Contr. 173.
*9*: 17 Mar 1915, Bull. 42: 117-160. 17 Mar 1915, Contr. 178.
*10*: 22 Sep 1915, Bull. 42: 463-479, *pl. 26-27.* 22 Sep 1915, Contr. 182.
*11*: 27 Feb 1915 (on cover Contr.; on p. 65 reprint: 26 Feb 1917), Bull. 44: 65-84. 27 Feb 1917, Contr. 196.
*12*: 10 Mar 1920 (on cover Contr.; on p. 45 reprint: 13 Mar 1920), Bull. 47: 45-66. 10 Mar 1920, Contr. 220.
*13*: 1 Aug 1921 (on cover Contr.; on p. 159 reprint: 5 Aug 1921), Bull. 48: 159-172. 1 Aug 1921.
*14*: 23 Feb 1923, Bull. 50: 61-71. 1923, Contr. 241.
##### n.9864. List of plants collected on the Peary Arctic Expedition
**Title**
Contributions from the New York Botanical Garden – no. 148. *List of plants collected on the Peary Arctic Expedition* of 1905-1906 by Dr. L.J. Wolf, and of 1908-09 by Dr. J.W. Goodsell. New York 1912. Oct.
**Notes**
*Publ*.: 24 Jan 1912, p. \[1\]-11. *Copies*: BR, U. – Reprinted and to be cited from Torreya 12: 1-11. 1912.
##### n.9865. Flora of the Rocky Mountains
**Title**
*Flora of the Rocky Mountains* and adjacent plains. Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, North Dakota, and British Columbia... New York (published by the author) 1917. 16-mo.
**Abbreviated title**: *Fl. Rocky Mts.*
**Notes**
*Publ*.: 31 Dec 1917 (see J. New York Bot. Gard. 19: 66. 1918; p. iii: Nov 1917, US rd. 25 Mar 1916, GH copy rd. 5 Mar 1918; see also Fernald 1918 who prefers "early in 1918"), p. \[i\]-xii, 1-1110. *Copies*: HH, MICH, MO, NY, PH, US.
*Preliminary studies*: *Studies on the Rocky Mountain flora* 1-29, *in* Bull. Torrey bot. Club 27-40, 1900-1913.
*Ed. 2*: 21 Jan 1923 (p. iv: Nov 1922; see Fernald (1936); "recently" J. NYBG Mar 1923; PH rd. 29 Mai 1923), p. \[i\]-xii, 1-1143, \[1144\]. – Additions on p. 1111-1144. *Copies*: G, HH, MICH, PH, USDA. – Second edition, New York (published by the author) 1922. 16-mo.
*Facsimile ed. vol. 2*: 1954, p. \[i\]-xii, \[1\]-1 143, \[1144\]. *Copies*: BR, FI. – Hafner Publishing Co. New York 1954. *Second printing*: 1969, idem. *Copy*: FAS.
*Ref*.: Ewan, J., Rocky Mt. natural. 295. 1950, ed. 2. 191. 1981.
- Fernald, M.L., Rhodora 38: 329-331. 1936.
- Stafleu, F.A., Taxon 19: 135. 1970.
- Standley, P.C., Torreya 18: 91-94. 4 Jun 1918 (rev. ed. 1).
##### n.9866. Key to the Rocky Mountain flora
**Title**
*Key to the Rocky Mountain flora*. Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and parts of Nebraska, South Dakota, North Dakota, and British Columbia... New York (published by the author) 1919.
**Abbreviated title**: *Key Rocky Mt. fl.*
**Notes**
*Publ*.: Mar 1919 (p. \[3\]: Sep 1918, US rd. 18 Apr 1919), p. \[1\]-305. *Copies*: US, USDA. – A reprint of the keys of Rydberg's *Fl. Rocky Mts.*, see above.
##### n.9867. Notes on Fabaceae
**Title**
*Notes on Fabaceae* – i-xiii... New York 1923-1931. Oct.
**Notes**
*Publ*.: A series of 13 papers published in *Bull. Torrey bot. Club* ("Bull.") and reprinted as *Contr. N.Y. Bot. Gard.* ("Contr."). *Copy*: U.
*1*: 25 Mai 1923, Bull. 50: 177-187. 25 Mai 1923, Contr. 244.
*2*: 17 Aug 1923, Bull. 50: 261-272. 17 Aug 1923, Contr. 247.
*3*: Jan 1924, Bull. 51: 13-23. 8 Feb 1924, Contr. 253.
*4*: 18 Mai 1925, Bull. 52: 143-156. 18 Mai 1925, Contr. 270.
*5*: 9 Jun 1925, Bull 52: 229-235. 9 Jun 1925, Contr. 272.
*6*: 20 Nov 1925, Bull. 52: 365-372. 20 Nov 1925, Contr. 275.
*7*: 1 Apr 1926, Bull. 53: 161-169. 1 Apr 1926, Contr. 280.
*8*: 21 Feb 1927, Bull. 54: 13-23. 21 Feb 1927, Contr. 287.
*9*: 16 Mai 1927, Bull. 54: 321-336. 16 Mai 1927, Contr. 289.
*10*: 15 Mar 1928, Bull. 55: 119-134. 15 Mar 1928, Contr. 297.
*11*: 7 Apr 1928, Bull. 55: 155-164. 7 Apr 1928, Contr. 300.
*12*: 17 Feb 1930, Bull. 56: 539-554. 17 Feb 1930, Contr. 314.
*13*: 20 Jun 1931, Bull. 57: 397-407. 20 Jun 1931, Contr. 320.
##### n.9868. Genera of North American Fabaceae
**Title**
*Genera of North American Fabaceae* i-vii, 1923-1930. Oct.
**Notes**
*Publ*. 1923-1929; a series of 7 papers especially published in Amer. J. Bot. ("AJB") and reprinted as Contr. N.Y. Bot. Gard. ("Contr."). *Copy*: U.
*1*: Nov 1923, AJB 10: 485-498. Nov 1923, Contr. 250.
*2*: Aug 1923, AJB 11: 470-482, *pl. 33-36.* Aug 1924, Contr. 257.
*3*: Mar 1928, AJB 15: 195-203. Mar 1928, Contr. 296. – *Tribe Psoraleae*.
*4*: Jul 1928, AJB 15: 425-432. Jul 1928, Contr. 301. – *Tribe Psoraleae* (continued).
*5*: 14 Jan 1929, AJB 15: 584-594. Dec 1928, publ. 14 Jan 1929, Contr. 303. – *Astralagus and related genera*.
*6*: Apr 1929, AJB 16: 177-206. Apr 1929, Contr. 309. – *Astralagus and related genera* (continued).
*7*: Mar 1930, AJB 17: 231-238. Mar 1930, Contr. 316. – *Astralagus and related genera* (continued).
##### n.9869. The section Tuber- arium of the genus Solanum
**Title**
Contributions from the New York Botanical Garden – no. 255. *The section Tuberarium of the genus Solanum* in Mexico and Central America... New York 1924. Oct.
**Notes**
*Publ*.: 17 Mai and 13 Jun 1924 (in journal), cover-t.p., p. 145-154, 167-176. *Copy*: U. – Reprinted and to be cited from Bull. Torrey bot. Club 51: 145-154. 17 Mai 1924, 167-176. 13 Jun 1924.
##### n.9870. Some senecioid genera
**Title**
Contributions from the New York Botanical Garden – no. 260. *Some senecioid genera*. New York 1924. Oct.
**Notes**
*Publ*.: 18 Sep & 24 Oct 1924, cover-t.p., p. 369-378, 409-428. *Copy*: U. – Reprinted and to be cited from Bull. Torrey bot. Club 51: 369-378. 18 Sep 1924, 409-420. 24 Oct 1924.
##### n.9871. New species from the Blue Ridge
**Title**
Contributions from the New York Botanical Garden – no. 294. *New species from the Blue Ridge*. New York 1927. Oct.
**Notes**
*Publ*.: 4 Nov 1927, cover t.p., p. 84-90, *pl. 3-5. Copy*: U. – Reprinted and to be cited from Torreya 27: 84-90, *pl. 3-5.* 4 Nov 1927.
##### n.9872. Scylla or Charybdis
**Title**
Contributions from the New York Botanical Garden – 311. *Scylla or Charybdis*... New York 1929. Oct.
**Notes**
*Publ*.: 1929, cover t.p., p. 1539-1551. *Copy*: U. – Reprinted and to be cited from Proc. Int. Congr. Pl. Sci., Ithaca, 2: 1539-1551. 1929. – Reflections on nomenclature and on splitting or not splitting genera. Pragmatical approach; enlightening for understanding Rydberg's taxonomy of small units.
##### n.9873. Flora of the prairies and plains of Central North America
**Title**
*Flora of the prairies and plains of Central North America*... New York (published by The New York Botanical Garden) 1932. Oct.
**Abbreviated title**: *Fl. Plains N. Amer.*
**Notes**
*Publ*.: 14 Apr 1932 (see J. New York Bot. Gard. 33: 138, 201. 1932), p. \[i\]-vii, 1-969.
*Copies*: BR, G, HH, MICH, MO, NY, PH, US(2), USDA. – New taxa previously published in Brittonia 1: 79-104. Oct 1931.
*Facsimile ed*.(*1*): 1965, \[i\]-vii, \[1\]-969. *Copy*: FAS. – Published for the New York Botanical Garden by Hafner Publishing Company, New York and London 1965.
*Facsimile ed*.(*2*): 1971, 2 vols., \[i-iv\], 1-503 and \[1-2\], 503-969. *Copy*: FI. – ISBN 0-486-22585-2.
*Ref*.: Diels, L., Bot. Jahrb. 66 (Lit.): 25. 1934.
- Gleason, H.A., Torreya 32(5): 130-133. 18 Oct 1932.
- Rendle, A.R., J. Bot. 71: 53-54. Feb 1933.
- Rosendahl, C.O., J. New York Bot. Gard. 33: 201-204. Sep 1932.
- Stafleu, F.A., Taxon 15: 329. 1966.