Janhaey 13, 1899.] 



SCIENCE. 



75 



measures, the 'Berlin Rules,' catalogue of ex- 

 siccati, catalogues of botanic gardens, botanical 

 museums, botanical collections and places where 

 deposited. The publishers (Borntraeger, Ber- 

 lin) have done their part well, both in printing 

 and binding. The light-colored linen cover and 

 its conventionalized water-lily ornamentation 

 are in most excellent taste. 



CHECK LIST OF FOBEST TREES. 



. A VERY convenient, revised and condensed 

 edition of Sud worth's ' Arborescent Flora of the 

 United States ' has recently been issued by the 

 Division of Forestry, under the title ' Check 

 List of the Forest Trees of the United States.' 

 It makes use of the modern nomenclature, 

 gives listsof common names, and includes notes 

 as to the range of each species. The following 

 corrections should be made in a later edition : 



Finns ponderosa scopulorum Engelm., add in Ne- 

 braslia eastward along the Niobrara River to the 99th 

 meridian, and to the 103d meridian on the North 

 Platte and Lodge Pole Elvers. 



Hicoria orata (Mill.) Britt., change to southeastern 

 instead of northeastern Nebraska. 



ffkoria laciniosa (Michx. f. ) Sarg., add south- 

 eastern Nebraska. 



Hicoria alba (Linn.) Britt., add southeastern Ne- 

 braska. 



Populus tremuloides Michx., change from south- 

 ern to western Nebraska. 



Qiiercus I'tiufiim Lam., add southeastern Nebraska. 



Asimina triloha (Linn.) Dunal., add southeastern 

 Nebraska. 



Pyrus coronaria Linn. This species is recorded in 

 local catalogues as occurring in eastern Nebraska, but 

 it is P. iocnsis (Wood) Bailey, if this is to be regarded 

 as a distinct species. 



Pnaius deinissa (Nutt.) Walp., add from central 

 Nebraska westward. 



Cercis canadensis Linn. , add southeastern Nebraska. 



Rhus copaUina Linn., add southeastern Nebraska. 



Acer saccharum Marsh., strike out eastern Ne- 

 braska, as this species does not occur in this region 

 in the wild state, although freely planted. 



Acer ruhrum Linn., strike out eastern Nebraslia, 

 as this species does not ooonr in this region in the 

 wild state, nor is it often planted. 



JEsculus gJabia Willd., add southeastern Nebraska. 



This check list will render a good service not 

 only to botany, but still more to forestry and 

 horticulture, In giving currency to the revised 

 nomenclature of our forest trees. 



CRETACEOUS AND TERTIARY PLANTS. 



F. H. Knowlton, phytopaleontologist of the 

 United States Geological Survey, publishes, in 

 Bulletin 152 of the Department of the Interior, 

 a most valuable catalogue of the Cretaceous and 

 Tertiary plants of North America. In Lesquer- 

 eux's catalogue of twenty years ago but seven 

 hundred and six species were included, of which 

 one hundred and fifty seven are from the Cre- 

 taceous, and five hundred and forty-nine from 

 the Tertiary. In the list before us about twenty- 

 five hundred species are included. The list is 

 strictly alphabetical and is not divided so as to 

 enable one to easily estimate the number from 

 each period. The date and place of publica- 

 tion of each genus and species are given with 

 much care. The modern nomenclature is used, 

 even to trinomials and the double citation 

 of authors. Much attention is given to syn- 

 onymy, and to the citation of the more impor- 

 tant references, especially to such as include 

 descriptions and figures. 



LEWIS AND CLARK'S PLANTS. 



Thomas Mbehan was fortunate enough to 

 discover, some time ago, in the custody of the 

 American Philosophical Society, some packages 

 of dried plants which, on examination, turn out 

 to be the long-lost collection made by Lewis 

 and Clark, in 1803 to 1806, during their expedi- 

 tion across the Western country from St. Louis 

 to the mouth of the Columbia River. They 

 were examined by Dr. B. L. Robinson and J. M. 

 Greenman, of the Herbarium of Harvard Uni- 

 versity, and compared with Pursh's treatment 

 of this collection, in his Flora Americae Septentrio- 

 nalis in 1814, and the results have been published 

 in the Proceedings of the Academy of Sciences 

 of Philadelphia (January, 1898). Mr. Meehan 

 notes that ' this collection contains all but six- 

 teen of Lewis's plants as described by Pursh in 

 his Flora,' and of the missing numbers seven 

 are represented in the herbarium of the Academy 

 by authentic specimens from Lambert's herba- 

 rium. Mr. Meehan says further that ' only a 

 few of these seven missing ones are of material 

 importance,' and that 'for all practical pur- 

 poses all the plants of Lewis and Clark's expe- 

 dition are now deposited in the Academy.' 



Charles E. Bessey. 



The University of Nebraska. 



