BOTANICAL GAZETTE. 



195 



so far been prepared by Dr. G. L. Goodale and Mr. Sereno Watson, of 

 Cambridge, Mass., Prof. "VVm. Trelease, of Madison, Wis., and Mr. Leo 

 Lesquereux, of Columbus, Ohio. They embrace 32 seperate items glean- 

 ed from no less than 18 journals, of which two-thirds are foreign, and 

 cover a wide range of topics. The journal is as invaluable to the bota- 

 nist as to the worker in any other department of science. It must, 

 however, be regretted that the latest information regarding the minute 

 structure of plants and the vast and interesting field of the lower orders 

 does not receive more attention. 



CURRENT LITERATURE. 



On the Structures which favor Cross-Fertilization in several Plants 

 (with three plates). By William Trelease. From the Proceedings of the 

 Boston Society of Natural History, Vol. XXI, March 15, 1882. The au- 

 thor of this valuable contribution to the literature of cross-fertilization 

 has long been engaged in a careful investigation of the subject and has 

 repeatedly published valuable results. The present pamphlet is a col- 

 lection of observations heretofore unpublished, and contains notes upon 

 certain of the Lemnaeece, Proteaceai, Rutaceoe, Ericacea>, Labiates and 

 Acanthacece, for the most part exotics. Lemna minor, however, is a na- 

 tive, and this species, one of the very smallest of phanerogams, seems to 

 be well adapted for crossing though if that is a failure there is a chance 

 for self-fertilization. It is protogynous and the two anthers mature 

 successively some days after the stigma. Cross-fertilization is effected 

 by the aid of currents of water, making it a hydrophilous plant. The 

 Proteaeea; are found to be apparently adapted to self-fertilization, but 

 are so formed as to favor crossing, sometimes even to the exclusion of 

 the former, the pollinators including bees, butterflies, and three distinct 

 groups of birds, Kerner's curious conjecture that in Dryandra the trans- 

 fer of the pollen is effected by the Kangaroos being mentioned simply 

 as a curiosity. But our space forbids any fuller mention of the many 

 interesting details to be met upon every page of this pamphlet. Strange 

 as many of the exotic forms are our interest centers about the little 

 Lemna whose effort after crossing is a very strong argument in favor of 

 the idea that continued propagation by self-fertilization is not best for a 

 species. 



Supplement to Chapman's Botany.— Chapman's Flora of the South- 

 ern States has so long been out of print, and discoveries and changes in 

 nomenclature have been so numerous that we had hoped for a revision 

 rather than a reprint with a supplement. It would, however, probably 

 be too much to ask of our oldest American botanist, and we take this 

 supplement as the best substitute, being really a condensed record of 

 discoveries, most of which have already been noted in our various peri- 

 odicals and published proceedings of our learned societies. Most of the 

 additions come from Florida, whose flora, so deeply tinged with West 

 Indian forms, has been most zealously examined for the past few years, 

 and the names of Curtiss, Garber, Miss Keynolds, and others, are 

 closely associated with that of Dr. Chapman himself. X o fewer than 

 200 species from Florida have thus been added to our catalogue of the 

 Southern Flora, and this means only species which have not yet been 

 found to extend beyond the limits of the State. The region most favor- 

 ed in new forms, after Florida, is that nest of mountains which is found 



