70 THE JOrRNAL OF EOTAT^T 



Vmhellatce, As^perifolia?, Siliquosce and the like. A. L. de Jussieu 

 (Gen. PI. p. Ixxii ; 1789), on the other hand, employed many plurals o£ 

 typical genera (or old generic names) — e. g., Junci,^ Onagra,^ Nycta- 

 qines, Folemonia. Such names were afterwards felt to be inappro- 

 priate, as they should denote, strictly speakmg, only the species of 

 Junciis, Onaqra, Nyctago, and Folemonium respectively. A. P. 

 De Candolle (Theorie Elem. 213; 1813) accordingly adopted the 

 following sutKxes which had been used by various authors to indicate 

 that the families were comjjosed of plants related to their type 

 genera : -acece, -icece, -ecB, -inecB, -anecs, -arieoe, -idece, e. g., TiliacecB, 

 RipiiocraHcecB, Menispermecs, CistinecB, Flacoiirtianece (ed. 2 ; 

 1819), Onagrariece, Folemonidece. The actual form given in the 

 Theorie Elementaire was gallicized in accordance with prevailing 

 custom in books of a semi-popular nature. The corresponding Latin 

 •forms were mostly given by the authorities cited b}'^ De Candolle. 

 The choice of thepaVticular sullix was largely a matter of euphony. 

 Such diversity of termination for groups of the same rank was found 

 to be confusing, especially for teaching purj^oses, and Lindley (/. c.) 

 accordingly advocated the uniform adoption of the suffix -acece for 

 familv names. 



it is, I think, clear from this brief historical sketch that the 

 priority of a family name formed from that of a genus should date 

 from its first publication with a diagnosis, notwithstanding that it 

 may have appeared in the form of the plural of the genus or with 

 some suffix other than -acea. In such cases the name of the original 

 author should be cited in parentheses. Whatever rule is adopted, 

 however, it will be necessary to have a list of nomina conservnnda 

 for families, in order that well-known names may ilot be superseded 

 on purely technical grounds. 



A few examples may now be considered of family names which 

 should be accepted under the International Kules. 



The name SchcuchzrriacecB has been adopted in recent years by 

 some authors in place of Juncaginacece (Buchenau in Engl. Pflanzen- 

 reich, iv. 1-1 ; Engl. Syll. ed. 7, 120). But JuncaginacecB is valid 

 under the Kules. It was formed from the old generic name Juncago 

 Tourn. (adopted in Moench, Meth. 64-4 ; 1794), a synonym of Tri- 

 glochin, and was published in 1830, whereas SclieuclizeriacecB dates 

 only from 1858. The forms Juncagines and Juncaginece are still 

 earlier. Incidentally it may be mentioned that Scheuchzeriacece 

 Agardh was a segregate from TriglocJiinece and included only 

 Scheuclizeria. 



JuKCAGTNACE.TC (L. C. Rich.) Lindl. Nat. Syst. ed. 2, 367 (1836). 

 Juncagines L. C. Rich. Anal. Fruit, p. ix (1808). 

 Juncaginece L. C. Rich, in Mem. Mus. Par. i. 365 (1815); 

 M. Micheli in DC. Monogr. Phan. iii. 94. 



Tric/locMnece Dumort. Anal. Fam. 59, 61 (1829); Agardh 



Theor. 42. 



Scheuclizeriacecp Agardh Theor. 44 (1858) ; Buchenau m Engl. 



Pllanzenr. iv. 14, 1. 



JAdcpacece Hieron. in Ber. Ges. Naturf. Freunde Berlin, 1878, 



116. 



