OD 



Atlantisdics Nordamerika. 777 



518. Borüinnn. Tl. F. Flora of Xortli Dakota. (Separato rei)ort 

 froni tlio üth llitiiuial Ta-pt. of tho Dirci-tor of tlie Xortli Dakota Soll aud 

 Geol. Survey. Tribüne t?tato Printers and Binders. Bisniarck, N.D., 1018. 

 8». p. 151—372.) — Siehe Bot. Ctr])l. 141, ]). i':}(). 



519. Boot, I). H. A forest ceusus in Lyon eounty. Jowa. 

 (Proeeed. Jo^va Acad. Sc. XXI 11. lOU;. p. 397—409. mit 2 Textfig. imd 

 4 Taf.) 



520. Boot. 1». II. Plant studies in Lyon County, Jowa. 

 (Prooeed. Jowa Acad. So. XXIV, 1917, p. 393—414. pl. 11—12, Fig. 80.) 



521. Coimrd, H. S. The white waterlily of JoAva. (Proeeed. 

 Jowa Acad. So. XXIII. 1016, p. 621—623.) 



522. Couard, H. S. The white waterlily of Clear Lake, Jowa. 

 (Prooeed. Jowa Acad. Sei. XXIV, 1917, p. 449—454, iU.) 



523. Coiiard, H. S. Tree growth in the vicinity of Grinnell. 

 Jowa. (Jonrn. Forestry XVI, 1918, p. 100—106.) 



524. Fitzpairiok. D. J. Corylns rostrata in Jowa. (Jowa Xat. III, 

 1917, p. 44—45.) 



525. Harper, R. 31. Some undescribed prairies in northeastern 

 Arkansas. (Plant World XX. 1917, p. 58—61, mit 2 Textfig.) 



526. Kelloffij'. H. S. Preservation of native plauts in Jowa. 

 (Prooeed. Jowa Forest and Conserv. Assoc. 1914/15, ersch. 1916, p. 80 — 99.) 



527. Lunell. E. J. Enumerantnr plantae Dakotae septen- 

 trionalis. III — VI. (Amer. Midland Xaturalist IV, 1916, p. 229—244, 

 297—320. 355—366, 400—418, 419—431, 467—487.) 



527a. Lunell. J. Enumerantnr plantae Dakotae septen- 

 trionalis vasoulares. X — ^XIV. (Amer. Midland X'aturalist V. 1917, 

 p. 1—13, 31—46. 55—71, 93—08, 332—333.) X. A. 



Vgl. Bot. Ctrbl. 141, p. 331—332 u. 332—333. 



528. 3Iacdonald. G. B. Evergreen trees for Jowa. (Yearbook 

 Jowa Dept. Agrio. XVII. 1917, p. 437—464, pl. 1—2, Fig. 1—18.) 



529. Middlebrook, C. A. Odorous flowers of Texas. (Amer. 

 Botanist XXIV. 1918, p. 3—6.) 



530. Paliner, E. L. A seed key to some common weeds and 

 plants. (Prooeed. Jowa Acad. So. XXIII, 1916, p. 335-394, mit 3 Taf.) 



531. Pammel. L. H. The preservation of Jowa's lakes from 

 the Standpoint of a hotanist. (Prooeed. Jowa Forest and Conserv. 

 Assoo. 1914/15, ersch. 1916, p. 173—175.) 



532. Pammel, L. H. The Vegetation of Jowa lakes. (Report 

 State Highway Comm. 1917, p. 163—189, Fig. 61—79.) 



533. Shimek, B. The plant geography of the Lake Okoboji 

 region. (Bull. Lab. nat. Hist. State Univ. Jowa VII, 1916, p. 3—90, mit 

 8 Taf. u. 1 Karte.) — Bericht im Bot. Ctrbl. 134, p. 379. 



534. Shimek, B. The plant geography of the Lake Okoboji 

 region, additional notes. (Bull. Lab. nat. Hist. Univ. Jowa VII. X"r. 4, 

 1917, p. 3—5.) 



535. Shimek. B. The sand flora of Jowa. (BuU. Labor. Xat. 

 Hist. Univ. Jowa VII. Xr. 4. 1917. p. 3—5.) 



536. Spurrell. J. A. The disappearance of native plants in 

 Jowa. (Prooeed. Jowa Forest and Conserv. Assoo. 1914/15. ersch. 1916, 

 p. 100—104.) 



