HITCHCOCK PLANTS OF AMES, IOWA. 53 I 



Onoclea sensibilis, L. Spec. 



Wet places; not uncommon. 

 OSMUNDA CliAYTONIANA, L. SpeC. 



Woody ravines ; scarce. 

 Botrichinm Virginianum, (L.) Swartz, Jour. f. d. Bot. ii, ISOO.— 

 Osmunda Vtrgitn'atia, L. Spec. — B. Virginicum, Willd. Spec. v. 



Rich woods; scarce. 



LIST OF THE MORE IMPORTANT WORKS REFERRED TO IN THE CATA- 

 LOGUE, PRECEDED BY THE ABBREVIATIONS USED. 



Ait. Hort. Kew. : Aiton, W.— Hortus Kewensis, 3 vols. 1789; 2d ed. 

 Alton. W. T. (^it. f.). 5 vols. iSro. 



Bigel. Fl. Bost. : Bigelow, J.— Florula Bostonensis, 1S14 ; 2d ed.. 1824 ; 

 3d ed., 1840 



B.S.P. Cat.: Britton, N. L., Sterns, E. E., and Poggenburg, J. P.— 

 Preliminary Catalogue of Anthophyta and Pteridophyta, * * * within 100 

 miles of New York City, 1S8S. 



Darl. Fl. Cast.: Darlingtun, W. — Florula Cestrica, 1826; 2d ed.. 

 Flora Cestrica, 1837; 3d ed., 1853. 



DC. Prod. : DeCandolle, A. P, and A. — Prodromus Systematis Natu- 

 ralis Regni Vegetabilis. i, 1S24; ii, 1S25; iii, 1S2S; iv, 1830; v. 1836; vi, 

 1837; vii, 1, 1839; vii. 3, 1S38; viii, 1844; ix, 1845; ^^ 1S46; xi, 1847; 

 xii, 1848; xiii, i, 1852; xiii, 2, 1849; '^'V: 1S56; xv, i, 1864; xv, 2, 1866; 

 xvi. I, 1869; xvi. 2, (p. 1-160) 1864; xvi, 2 (p. i6i-end), 1868; xvii, 1873. 



DC. Syst. : DeCandolle, A. P. — Regni Vegetabilis Systema Naturale. 

 i, 181S; ii, 1821. 



Ell. Sk. : Elliott, S. — A Sketch of the 'Botany of South Carolina and 

 Georgia, i, 1S21 ; ii, 1824. 



Gray, Man. : Gray. Asa — Manual of the Botany of the Northern United 

 States, 1848; 3d ed.(.?) 1857; 5th ed., 1867; 6th ed., 1S90. 



Gray, Syn. Fl. : Gray, Asa — Synoptical Flora of North America; i. 2,^ 

 1884; ii, I, 18S; Suppl , I 886. 



Hook. Fl. : Hooker, W.J. — Flora Boreali-Americana. i. Pt. f, 1829; 

 i. Pt. 2 iS: 3, 1832; ii. 1840. (Ex notes in Dr. Engelmann's copy.) 



Kunth, Enum. : Kunth, K. S. — Enumeratio Plantarum omnium hucus- 

 que cognitarum. i, 1833; Suppl., 1835; ii, 1837; iii, 1S41 ; iv, 1843. 



Lam. Diet. : De la Marck, J. B. — Encyclopedia Methodique. i, 1783; 

 ii, 17S6; iii, 17S9; iv, 1797; v, (vols, v to xiii by J. L. Poiret,) 1804; vi 

 1S04; vii, 1S06; viii & ix, iSio; x, iSii; xi, 1813; xii, 1816; xiii, 1817. 



