324 ^^ Hock: Pflanzengeographie. [102 



bi'eitung, ihrem Standort und ihrem Aussehen besprochen und hinsichtlich ihrer 

 verschiedenartigen Benennung übersichtlich zusammengestellt. 



490. Ciaassen, E. On the occiirrence of Fossombronia cristula in 

 Ohio. (^Ohio Nat, IV, 1904, p. 68.) 



491. Griggs, R. F. Notes on interesting Ohio willovvs. (Ebenda, 

 p. 11—16.) Vgl. Bot. Jahrber. XXXIT, 1904, S. 849, B. 2206. 



492. Jenniiig'S, 0. E. Notes on some rare or interesting Ohio 

 plants. (Ebenda, p. 61.) 



492a. Kellernian, W. A. and Jeimings, V. E. Report for 1902 on the 

 State Herbarium, including additions to the State Plant List. (Ebenda, 

 p. 69—73.) 



492b. ScIiafflH'l', J. H. Ohio plants with extra- floral nectaries 

 and other glands, (Ebenda, p. 103 — 106.) 



492c. Schalfner. J. H. Poisonous and other injurious plants of 

 Ohio. (Ebenda, p. 69—73.) 



492d. Kellernian, W. A. Flora of Oedar Point. (Ebenda, p. 186 — 190.) 



492e. Kellernian, W. A. Flora of Hen and Chicken Islands, 1903. 

 (Ebenda, p. 190—191.) 



493. Bouser, T. A. Ecological study of Big Spring prairie, 

 Wyandot county, Ohio. (Ohio Acad. Sei. Special paper, no. 7, Columbus, 

 1903, 96 p.) 



Vgl. Bot. Gaz.. XXXVII, 1904, p. 315. 



494. (ileason, H. A. Notes from the Ohio State Herbarium I. 

 (Ohio Naturahst, V, 1904, p 249—250.) 



Vgl. Bot. Centrbl., C, S. 42. 



Behandelt Hi/pericum horeale, Camelina microcarpa, Cichorium intyhus divari- 

 catum, Gomphrena globosa und Thlaspi arvense. 



495. Aiken, W. H. Check list of Hamilton County, Ohio, Plants 

 exclusive of the lower cryptogams. (Journal of the Cincinnati Society 

 of Natural Historj, May 6, 1904, XX, No. 4, p. 199—230.) 



Aufzählung der Gefässpflanzen nach verwandtschaftlicher Reihenfolge, 

 doch ohne Standortsangaben. 



496. Wetzstein, A. The white pricklj poppy in north-westem 

 Ohio [Argemone alba]. (Plant World, VlI [1904], pp. 277—278.) 



Vgl. Bot. Jahrber. XXXII, 1904, 1. Abt., S. 823, B. 1968. 



497a. Beal, W. J. The future of white pine and Norway pine 

 in Michigan. (Rep. Mich. Acad. Sei., IV, 1904, p. 106—107.) 



497b. Bcal, W. J. Some of the changes now taking place in a 

 forest of oak openings. (Eh., p. 107 — 108.) 



498. Conller, Stanley and Dorner. H. B. A key to the genera of the 

 forest trees of Indiana, based chiefly upon leaf characters. (Lafay- 

 ette, Indiana, 1904, 12 p., 16».) 



Vgl. Bot. Gaz., XXXVIII, 1904, p. 387. 



499. Beal, W. .1. Michigan flora: a list of the fern and seed 

 plants growing without cultivation. (Reprinted from the fifth Report 

 of the Michigan Academy of Science, Lunsing, 1904, 147 p., 8°.) 



B. im Bot. Centrbl., XCVIII, S. 343. 



500. Newcombe, Frederick ('. Pres idents Address. A natural history 

 survey for Michigan. (Reprinted from the Sixth Annual Report of The Michi- 

 gan Academy of Science, p. 28 — 36.) 



