62 Amendment and completion of 



6 : 408 (1804), consequently if these species are regarded as congeneric 

 the name Desmodiiim is to be rejected; Sisymbrittrn a!tissinnim\., Sp. 

 PI. 659 (17S3), Sisymbrium Sinapistrum Crantz, Stirp. Ausln ed. 2, 52 

 (1769), and Sisymbrium pannonicum Jacq. Coll. i: 70 (1786), have 

 different types, but if these are regarded as belonging to the same species, 

 the two later names are metonyms of that of Linnaeus. 



3°. When there is an older valid name based on the same 



type (typonym). 



Examples. — CoralUode^idronYJxXz. Polyp. Calcif. 11 (i84i)and 



Corallocephabis Kiitz. Linnaea 17 : 95 (1843) ^''^ ^^th typonyms of Peni- 

 cillus Lamarck, Ann. Mus. Nat. 20: 297 (1813), all being typified by 

 the same specie^; Pyrenochium Link, Abh. Berl. Akad. 1824: 171 

 (X826), is a typonym of DothioreUa Sacc. Michelia 2: 5 (1880), both 

 being based on Dothidea pyrenophora Fr, ; Asplenium Vincentis Christ, 

 Bot. Jahrb. 24 : 109 (1897), is a typonym of ^. Guildingiil^wvc^. Gard. 

 Chron. Ill, 15 : 70 { 1894), both being based on H. H. Smith's no. 1346 

 from St. Vincent; Miegia Pars. Syn. i : loi (1805) is a typonym of 

 Arundinaria Michx. FL Bor.-Am. 1: 73 (1803), both being based on 



the same species. 



4^. When the natural group to which it applies is undeter- 

 mined (hyponym). 



{a) A specific or subspecific name is a hyponym when 



it has not been connected with a description, identi- 

 fiable by diagnostic characters or by reference to a 

 type specimen, figure, or locality. 



Examples. — Pexisperma lutescens Raf. Carat. Nuov. Gen. 

 Sp. Sicilia 89. pL 20, f^ i (iSio) is a hyponym, as the description 

 and figures are not identifiable; Ilydrophora tenelia Tod^^ Fung. 

 Meek. Sel. 2: 6 (1791), is a hyponym, as its description is not 

 identifiable; Gentiana hybrida Raf. Med. Rep. II. 5 : 353 (1808) 

 is a hyponym, as no diagnosis is published; Lechea furfuracea 

 Raf, New Fl. Am. i : 92 (1836) is a hyponym, as its description 

 is not identifiable; Sigillarin centralis Newb. Annals of Science 

 1 : 96 (1853) is a hyponym, as no description or figure is published. 



A generic or subgeneric name is a hyponym, when 

 it is not associable, at least by specific citation, with 

 a binomial species previously or simultaneously 

 published ; or when its type species is not indentified. 



Examples. — Adodendrum Necker, Elem. i: 214 (1790) 

 and Calesiam Adans. Fam. PL 2 : 446 (X763) are hyponyms, be- 

 cause their authors neither named a binomial species nor cited a 

 species which had previously received a binomial name ; Sdernax 

 Raf. Carat. Nuov. Gen. Sp. Sicilia 90 (1810) is a hyponym, as its 

 type species, Sdernax truncata^ has not been identified ; Nudilus 

 Raf. Atl. Joun 176 (1833) is a hyponym, as its type species, N. 

 paradoxus^ has not been identified. 



