THE NOMENOLATUllE OF PLAXT FAMILIES 71 



The case of Boxhurgliiacece versus Stemonace(B is even clearer. 

 The famil}^ BoxhurqhiacecB was published by Wallieh in 1832, and 

 it was not until 1879 that the name was changed to StemonacecB. 

 Similarly Challletiacece antedates Dichapctalacew by many years, 

 whether priority is reckoned from publication with the suffix -ccb or 

 with -acecB ; and Cauellacece has priority over WinteranacecB. 



UoxHUiiuutACE.E Wall. PI. As. Rar. iii. 50 (1882) ; Benth. et 

 Hook. f. Gen. PI. iii. 710. 



t:itemo)uice(£ Pranch. et Sav. Euum. Pi. Jap. ii. 92 (1879) ; Engl. 

 in Engl, et Prantl, Pflanzenfam. ii. Abt. 5, 8. 



Chailletiace.i^. (R. Br.) DC. Prodr. ii. 57 (1825); Benth. et 

 Hook. f. Gen. PI. i. 3J.0. 



ChailletecB R. Br. in Tuckey, Congo, 442 (1818). 



DichapetalecB Baill. in Mart. Fl. Bras. xii. pars 1, 3G5 (1886). 



Dichapetalacecd Engl, in Engl, et Prantl, Pllanzenfam. iii. Abt. 4, 

 345 (189(5). 



Cajsellace.t^ Mart. Nov. Gen. iii. 170 (1829) ; Benth. et Hook, 

 f. Gen. PI. i. 121. 



Winteranacece Warb. in Engl, et Prantl, Pflanzenfam. iii. Abt. G, 

 314 (1895) ; Engl. Syll. ed. 7, 266. 



The case of Flcoidacece versus Tetragoniacecd and Aizoacece is 

 not quite so simple. Fico'ides Tourn. is a synonym of Mesemhrycni- 

 themiim^ and Ficdidea Dill, is Aizooii. Jussieu's name Ficdidece 

 was derived from the former : the Erench form was *'les Ficoides," 

 and " Ficoide " was the vernacular name of Mesemhryanthemum 

 (Gen. 317). If family names ending in -ecB are accepted for purposes 

 of priorit}^ then the family should be called Ficoidacem ; if, on the 

 other hand, the earliest family name in -aceod is adopted, then it 

 becomes Tetragoniacem. Aizoacece is a synonjan in any case. 



F1C01DACE.E (Juss.) Rohrb. in Mart. Fl. Bras. xiv. pars 2, 307 

 (1872). 



Ficdidece Juss. Gen. 315 (1789) ; Benth. et Hook. f. Gen. PI. i. 

 851. 



Ficdidce Mirb. Elem. ii. 898 (1815). 



Aizdiden Spreng. Anleifc. ed. 2, ii. 842 (1818). 



AizdidecB Spreng. Syst. ii. 473, sub nn. 1852-3, 1858-9 (1825). 



MesemhrincB Link, Handb. ii. 12 (1831). 



Tetragoniacece Link, 1. c. 17 (1831) ; LindL Nat. S3^st. ed. 2, 

 209. 



Mesemlryacece Lindl. Nat. Syst. ed. 2, ^Q (1836). 



MesemhryantliemecB Fenzl in Ann. Wien. Mus. i. 347 (1836). 



Sesuviacece Horan. Tetractys Naturae, 29 (1843). 



Aizoacece A. Br. in Aschers. Fl. Brandenb. i. Einleit. 60 (1864) ; 

 Pax in Engl, et Prantl, Pflanzenfam. iii. Abt. 1 B, 33. 



Molluginacece Rohrb. in Mart. Fl. Bras. xiv. pars 2, 229 (1872). 



MesemhriantJiemacece Lowe, Fl. Madeira, 306 (1868). 



3Iesemhrga)ithemacece Baill. Hist. PL ix. 46 (1886). 



Engler and others have adopted the name (Enotlieracece, but 

 OnagracecB has priority over all other names for the Willow-herb 

 familv, whether the earliest form or the form ending in -acece is 



