gjl Nordamerikanisches Pflanzenreich. 1037 



Verf. unterscileidet verschiedene Pflanzengürtel in den von ihm unter- 

 suchten Seen. 



B. im Bot. Centrbl., CXXII, p. 151—152. 



463b. Dachnowski, Alfred F. The Ancient Vegetation of Ohio and 

 its Ecological Conditions forGrowth. (Ohio Naturalist, XI, 1911, p. 812 

 bis 331.) 



463c. Dachnowski, Alfred F. The Vegetation of Cranberry Island 

 (Ohio) and its Relations to the Substratum, Temperature, and Eva- 

 poration. (Botanical Gazette, LH, 1911, p. 1—33, 126—150.) 



464. Detmers, Freda. The Vascular Plauts of the Cranberrj Bog 

 in Buckeye Lake. (Ohio Naturalist, IT, 1911, p. 305—306.) 



465. Fink, B. and Lantis, V. Climatic Conditions and Plant Growth 

 in southwestern Ohio in 1908 and 1909. (Ohio Naturalist, XII, 1912, 

 p. 385—396.) 



Vergleich der einzelnen klimatischen Faktoren mit den Pflanzen 

 des Gebietes. 



466. Fox, C. P. Another Ohio grown rubber. (Ohio Nat., XII, 1912, 

 p. 469—470.) 



Apocyniim-Arten. 



467. Fallmer, E J. Additions niade to the Cedar Point Flora 

 during the summer of 1911. (Ohio Naturalist, Xll, 1912, p. 473.) 



Neu für das Gebiet: Lühospermum arvense, Cydoloma atriplicifolium, 

 Arcliangelica atropurpurea. Dipsacus süvestris, Triadenum virginicum, Fanicum 

 ovale, P. villosissimum und Scirpus occidentalis. 



468. Goetz, C. H. Forestry at the Ohio State University. (American 

 Forestry, XVIII, 1912, p. 261-262.) 



Dazu gehören Bilder von grossen Bäumen. 



468a. Ohio. (American Forestry, XVIII, 1912, p. 283.) 



469. Griggs, Robert F. Fhlox stolonifera rediscovered in Ohio. (Ohio 

 Naturalist, XI, 1911, p. 261— 2G2.) 



469a. Griggs, Robert F. Eupatorium rotundifolium in Ohio. (Ohio 

 Naturalist, XI, 1911, p. 287.) 



469b. Griggs, Robert F. An Ohio Station for Phacelia dubia. (Ohio 

 Naturalist, XI, 1911, p. 303.) 



469c. Griggs, Robert F. Eupatorium aromaticum in Ohio. (Ohio 

 Naturalist, XI, 1911, p. 304.) 



470. Jeiinings. 0. E. Some rare Ohio plants from Ashtabula 

 County, Ohio. (Torreya, XII, 1912, p. 107—110, fig. 1.) 



471. O'ßryne, F. A woodlot survey in Oxford Township, Butler 

 County, Ohio. (Miami Univ. Bull., XI, 1912, p. 7—58, Illust.) 



472. Scliaft'üer, John H. A Revised Taxonomy of the Grasses. 

 (The Ohio Naturalist, XIE, 1912, p. 490-493.) 



Bezieht sich auf Gräser von Ohio. 



473. Schaifner, John H. The Gymnosperms of Ohio. (Ohio Natura- 

 list, X, p. 9—12.) 



473a. Schaffner, John H. A Proposed List of Plants to be Exclu- 

 ded from the Ohio Catalog. (Ohio Naturalist, X, p. 185—190.) 



474a. Schaffner, John H. New and rare plants of Ohio. (Ohio 

 J^aturalist, XII, 1912, p. 457.) 



