10 INTERNATIONAL RULES FOR BOTANICAL NOMENCLATURE 
Examples i — baltica = Ammophila arenaria x Cala- 
magrostis epigeio 
Article 33, Ternary hybrids, or those of a ——— order, are 
designated like ordinary hybrids by a formula and a nam 
xamples: x Salix Straehleri = S. aurita X cinerea repens, or 
S. (aurita x repens) X cinerea. 
Article 34. When there is reason to distinguish the different 
forms of a hybrid (nleomorphis hybrids, combinations between 
erent forms of collective —— &¢.), the subdivisions are classed 
rotundifolia). “The e pre rertsire aed of the characters of one or og 
parent may be indicated in the formulas in the following man 
Mentha longifolia > x rotundifolia, M. longifolia x < eeaiRifolia, 
Cirsium supercanum x rivulare, &e., &c. The participation of a par- 
ticular variety may also be indicated. Example: Salix caprea X 
daphnoides var. peng 
RECOMMENDATION, 
XVII. Half-breeds, or on PE such, may be designated by 
@ name anda formula. Names of half-breeds 8 are intercalated 
among the pabiGivisione of a ohare preceded by the sign x. In the 
formula the names of the parents are in alphabetical paren 
Section 4, Tar a gegen or Names AND THE Date OF EACH 
Name OMBINATION oF NAmEs. 
Article 35. Paaeniedl is effected by the ab or public dis- 
tribution of fb inted matter or roe autographs. 
cation of new names at a public meeting, or the 
placing stn sii in a or Bach open to the public, do 
not constitute publicati 
xamples. Bete publication without peated matter: Salvia 
wiped Webb an d Heldr. was published in 1850, i a oa 
alogue, : si - on sale (Webb and eh 
memoir read at the Société des Sciences de Montpellier i in 1773, 
ae) taer i in 1782 or 1783 at the Société de Médecine de Paris; but 
its effective publication dates — se in the Mémoires de la Soe. 
Roy. de Médecine de Paris, vol. y. 1 
Article 36. On and after a ist, 1908, the publication 
of names of new groups will be valid only when they are accom- 
panied by a Latin diagnosis. 
Article 37. Avspecies or a subdivision of a species, announced 
in @ work, with a complete specific or varietal name, but without 
osis or reference to a former description under another name, 
is not valid. Citation in synonymy or incidental mention of a name 
is not effective publication, and the same applies to the mention of 
