24 EXPERIMENT STATION RECORD. 



American grasses — III, F. Lamson-Scribner f ('. S. Dept. Aijr., Divhion ofAgrox- 

 iohxjii, Bui. 'JO, pj). 197, figa. 1.17). — Thin bulletin is in continuation of Bulletins 7 and 

 17 (E. 8. R., 9, p. 327; 11, p. 219) of the Division. It contains descriptions of the 

 tribes and genera of North American grasses, with analytical ke\\s. Each genus is 

 illustrated and reference is made to all other species of the genus illustrated in the 

 bulletins just referred to. A bibliography of all the authorities cited in the 3 bulle- 

 tins has bet'u a<lded. 



Notes on useful plants of Mexico, J. N. Rose {U. S. Dcpl. A</r., Division of 

 Hotaii;/, Cuiih-ihnliinm front llic l'. S. Xational Jlerharinm, vol. '>, Xo. ■'/, pp. 209-259, 

 pis. 16). — The author records his observations relative to the utilization by the people 

 of Mexico of a innnber of species of plants. 



Studies of Mexican and Central American plants — No. 2, J. N. Rose ( U. S. 

 J)epl. A(j>:, lJicisio)i of BoUwij, Contributions from the U. S. National Herbarium, vol. 5, 

 No. 4, pp. 145-200, pis. S, Jif/s. 30) . — Descriptions of new and notes on little-known 

 species are given, together with a synopsis of the North American species of several 

 groups. 



T-wo ne'w species of plants from the North-western United States, L. E. 

 IIendkhson {('. S. Ikj/t. At/r., Dirision of Botain/, < 'nnlribiiliansfriini /lie f. S. National 

 Herbarium, vol. 5, No. 4, pp. 201, 202, pi. 1). — Descriptions are gi\cii (if Aster latahen- 

 sis and Anf/elica roseana. 



Hesperogenia, a new genus of XJmbelliferse from Mount Rainier, J. M. 

 CoL'LTEK and J. N. Rose {V. !<. Dept. Agr., Division of Bolanij, (hntrihuf ions from the 

 U. S. National Herbarium, vol. 5, No. 4, p- 203, pi. 1). — Descriptions are given of a 

 new genus of Umbellifene, to which the specific name strirJdanfli is given the one 

 species. 



Three new species of Tradescantia in the United States, J. N. Rose ( U. S. 

 Dept. Agr., Dirision of Botami, (h)itributions frotn the U. /S'. Nati<j)inl Herbarium, vol. 5, 

 No. 4, jip. :.'O4-206). — Tradescaittia humilis, T. gigantea, and T. scopnlorum are described. 



Treleasea, a new genus of Commelinacese, J. N. Rose {U. S. Dept. Agr., 

 Divi.von <f Botany, Co)dributi<ms from the V. S. National Herbaritim, vol. 5, No. 4, pp- 

 207, 208). — This new genus is separated out of some of the confused material grouped 

 under Tradesrantia brerifoUa, and o species are described, Treleasea brerifolia, T. 

 leiamlra, and T. tumida. 



List of trees and shrubs on the grounds of Purdue University ( IniHana Sta. 

 Rpt. 1899, ]>]>. l.iP>-l.!9). 



New species of fungi from various localities with notes on some published 

 species, J. B. Ellis and B. M. Evekhaht {Bid. Torrey Dot. Clnb, 27 {1900), No. 2, 

 pp. 49-64). — Notes and descriptions on a number of species of fungi, some of which 

 may prove of economic importance, though most are sa))ropliytes or upon plants of 

 little importance from an economic stan(li)()iiit. 



The poisonous and edible fungi of Hungary, G. von Istvanffi {Die ungar- 

 ixclicii essburiii und gifligcn Pilze. Biidajxxl, 1899, pp. 20-^ 361, pis. 42, figs. 150). 



The position of the fungi in the plant kingdom, II. L. Bolley {Cenibl. Bakt. 

 u. Par., .i. Abt., .-, [1S99), No. 25, pp. <S'57-<SV>,9).— The author argues that if nitrifying 

 organisms are capable of subsisting wholly on inorganic materials, in classification 

 algji' should l)e derived from fungi and not vice versa by degeneration. 



Studies on the biology of Penicillium glaucum, F. P. Gueguen ( T exis, Lons- 

 li-Saulnier, 1899, pj>. 83, pis. .5). 



The mechanism of root curvature, J. B. Pollock {Bot. Gaz., 29 {1900), No. 1, 

 pp. 1-63, fig. 1). 



Observations on seasonal dimorphism among plants, Wettstein {Bot. Centbl., 

 81{1900): No. 1, pp. 15, 16). 



