154 GENERAL REVIEW OF THE ORCHIDE.E. 



Fairieanum, presumably a distinct acquisition, C. x calloso-Argus and 

 several other Cypripedes, some of which are from the same pairs of 

 species as older hybrids^ also Pliain.^ x hybridus previously raised by 

 Mr. Drevrittj of Riding-Mill-on-Tyne. Messrs. Pitcher and Manda, of 

 Short Hills Nursery, New Jersey, have obtained several Cypripedes, 

 of which G. Constableanum from C Bayanum and 0. x Fairifannm 

 adds one more to the vexillariinu group, many other Cypripedes 

 most of them secondary hybrids, and I)e)idrohium x Roehlingiamim, of 

 which D. Racliorl, a species now but seldom seen, is one parent. 



LITERATURE. 



The literature of the Orchide^ is very copious. Besides the 

 works especially devoted to the subject there is a large amount 

 dispersed through botanical works that have been compiled in Latin, 

 English, French, German and other European languages since the 

 time of Linnaeu?. Of the larger works devoted exclusively to 

 orchids there are many of the highest excellence both as regards 

 illustrations of particular species and the accompanying letterpress. 

 Others are of a more popular kind exclusively devoted to showy 

 species in cultivation and generally devoid of analytic figures showing 

 generic or specific characters. Many of the treatises on the Orchide.e 

 forming part of the Floras of different countries, or other works of 

 large scope have been compiled by botanists of eminence and are 

 among the most valuable contributions to Orchidology extant; and 

 scarcely less so are most of the papers on orchid subjects read 

 before the Linnean Society and published in the Society's Journal. 

 The subjoined list of published works arranged in chronological 

 order includes, so far as we have been able to ascertain, all the 

 most important from the earliest production of Linnaeus to those 

 of the present time. On account of the great amount of orchid 

 literature scattered through botanical and other periodicals since 

 1830 the list is far from being complete, 



175.3 Linnaeus, Species Plantarum, cd. 1, vol. II. 



1762 Linnwus, Species Plantarnm, ed, 2, vol. II. 



1789 A. L. Jussieu, Genera Plantarum, p. 64, 



