328 BOTANY. 



2)rothallus, in which he figures some curious forms of buds and what he 

 calls conidia, and in Kosmos is an article by Dodel-Port on the peculiar 

 forms which fern-pro th alii assume when grown under water. 



PH^NOGAMS. 



The most important work published during the year in the United 

 States is the second and final volume of the Flora of California, by 

 Sereuo Watson. The work was imblished under the auspices of the 

 Geological Survey of California, aided by priv^ate subscriptions. In the 

 work Mr. Watson was aided by Dr. Engelmanu, who elaborated the oaks, 

 pines, and Loranthacece ; by M. S. Bebb on the willows ; William Boot 

 on Cariccs ; Dr. George Thiu'ber on the grasses ; and Professor Eaton 

 on the higher cryptogams. The work ends with the mosses, the lower 

 cryptogams being entirely omitted. The appendix contains a glossary 

 and a List of Persons icho have made botanical collections in California^ 

 by Prof. W. H. Brewer. The botanical contributions of Professor Gray 

 in the Proc. xVm. Acad. Arts and Sciences coinin'isa Notes o)i some Composi- 

 tee, which form a sort of prodromus of that order in the Synoptical Flora ; 

 Some Species of Asclepias ; A New Genus of Gentianacew, Geniostemon 

 including two Mexican species ; and Misccllancw of the North American 

 Flora, including the new genus Beverchonia. The Vegetation of the Rocky 

 Mountain Region, by Professor Gray and Sir J. D. Ilooker, published in 

 the Bull. U. S. Geol. and Geog. Survey, although bearing the date 1880, 

 was not in reality made generally public until 1881. The Trans. St. 

 Louis Academy contain a Revision of the genus Pimis and Description of 

 Finus Elliottii, by Dr. Engelmaun, with three folio plates by lioetter. 

 In the Botanical Gazette are several notices by Professor Gray, of which 

 may be mentioned an account of the genus Leavenworthia, of which 

 four species are described. In the same journal Engelmann describes 

 a new species of Catalpa, C. speciosa; Mr. T. Moron g describes some 

 new species of Potamogeton, and Professor Porter a new species, Haben- 

 aria Garberi. Bailey gives an account of Michigan Lalce Shore Plants ; 

 I. 0. JVIartiudale, under the title of Germination and Growth of Parasitic 

 Plants, relates his experience with Orobanche minor. The same botanist 

 gives an account of the so-called Bartrani OaJc, in which he concludes 

 that Quercus heterophylla Mchx. is a distinct species. J. Donnell Smith 

 has in Bull. Torr. Club a note on Wolffia gladiata var. Floridana, in 

 which he includes some remarks by Ilegelmaier on that species. Prof. 

 0. S. Sargent has issued a Catalogue of the Forest Trees of North America 

 in connection with the work of the Census Bureau. 



Of foreign works may be mentioned Elmes's Monograph of the genus 

 Lilium, a folio with 78 colored plates, and J. G. Baker's Synopsis of 

 Aloinece and Yuccoidew in the Journ. Linn. Soc. Several additions have 

 been made during the year to works on local floras which had apj)eared 

 in part in previous years. The Flora of British India, by Hooker, has 



