Allgemeines. 633 



Examples. — Asplenium Trichomanes L. ; Uromyces Tri- 

 folii DG. ; Trichomanes Smithii Presl. 



4. The publication of names of bilingual derivation should 



be avoided, but published names are not to be rejected 



on account of such derivation. 



Examples. — Liquidambar is Latin-Arabic; Fimbristylis is 

 Latin-Greek; Actiniceps is Greek-Latin. 



5. The names of hybrids may be written as follows: 



a) A hybrid may be named by placing the names of 

 the parent species or subspecies in alphabetical order, 

 connected by the sign X; but in hybrids experi- 

 mentally produced, or in which the sex of the parents 

 is known, the female parent is to be written first 

 and the sex indicated by the signs Q, rf . 



Examples — Carex debilis X virescens ; Digitalis lutea 

 9 X pur pure a <$. 



b) A hybrid may be named when desirable like a spe- 

 cies or subspecies, provided the binomial or trinomial 

 is preceded by the sign X> designating it as a hybrid. 



Example. — X Salix capreola Kern. 



c) A hybrid between species of different genera may be 

 named by attaching the specific name to the generic 

 name of the female parent, or, if the sex of the pa- 

 rents is unknown, to the generic name Coming first 

 in alphabetical order. 



Example. — X Ammophila baltica Link = Ammophila 

 arenaria X Calamagrostis Epigeios. 



d) A hybrid derived from parents one or both of which 

 are of hybrid origin, may be named by including 

 the name of the hybrid parent in parentheses. 



Example. — Salix (aurita X repens) X cinerea. 



e) Preponderance of one parent over the other may be 

 designated by the signs >, <. 



Examples. — Mentha longifolia ^> X rotundifolia ; 

 Mentha longifolia X <C rotundifolia. 



Sectio n IL Citation of authors. 



1. An author-citation following a name refers to the 

 author by whom the name was first published ; the 

 author's name may be abbreviated, but never in such 

 a manner as to result in ambiguity. 



Examples. — Spreng, for Sprengel, not Spr., to distinguish 

 from Spruce and others; Michx. for Mich., to distinguish from 

 Michel i: S. Wats. for Sereno Watson, to distinguish form 

 H. C. Watson. 



2. In the following cases the name of the original author 

 should appear in parentheses, followed by that of 

 the author who first published the name in its accepted 

 form and application. 



a) A specific name originally combined with a different 

 generic name, or a subspecific name originally com- 

 bined with a different binomial. 



Examples. — Moneses uniflora (L.) A. Gray, for the 

 plant originally described as Pyrola uniflora by Linnaeus 



