BOTANICAL XOMENCLATURE 93 



3. In deciding wlietlicr two or more sliglitly different names should be 



treated :is distinct or as orthographical variants, the essential con- 

 sideration is wliether they may be confused with one anotlier or not : 

 if there is serious risk of confusion, they sliould be treated as 

 orthographic variants. Doubtful cases should be referred to the 

 Executive Committee. 



4. Specific and other epithets of Greek origin differing merely by having 



Greek and Latin terminations respectively are orthographic variants. 

 Epithets bearing the same meaning and differing only slightly in 

 form are (considered as) orthographic variants. The genetive and ad- 

 jectival forms of a personal name are, however, treated as different 

 epithets (e.g. Lysimachia Eemsleyana and L. Hemsleyi). 



Recommendations : 



XXXVIII. Wlien a new name is derived from a Greek word containing the 

 spiritiis asper (rough breathing), this should be transcribed as the letter h. 



XXXIX. When a new name for a genus, subgenus or section is taken from the 

 name of a person, it should be formed in the following manner: — 



(a) When the name of the person ends in a vowel the letter a is added 



(thus Ashbya after Ashby; Blaheslea after Blakeslee), except when 

 the name already ends in a, when ea is added (e. g. Collaea after 

 CoUa). 



(b) When the name of the person ends in a consonant, the letters ia are 



added (e. g. Magnusia after Magnus, Guilliera after Guillier), ex^ 

 cept when tlie name ends in er, when a is added, e. g. Kernera after 

 Kerner). 



(c) The syllables which are not modified by these endings retain their original 



spelling, even with the consonants fc and w or with groupings of 

 vowels which were not used in classical Latin. Letters foreign to 

 botanical Latin should be transcribed, and diacritic signs suppressed. 

 The Germanic a, o, ii become ae, oe, ue ; the French e, e, e become 

 generally e. In works in which diphthongs are not represented by 

 special type, the diaeresis sign should be used where required, e.g. 

 C'cphaelis, not CepJiaelis. 



(d) Names may be accompanied by a prefix or a suffix, or modified by ana- 



gram or abbreviation. In these cases they count as different words 

 from the original name. 



Examples: Durvillea and Urvillea; Lapeyrousea and Peyrousea; 

 Bouchea and Ubochea; Gerardia and Graderia; Thaxtera, Thax- 

 teriola. 



XL. When a new specific or other epithet is taken from the name of a man, it 

 should be formed in the following manner: — 



(a) When the name of the person ends in a vowel, the letter i is added (thus 

 Caoi from Cao), except when the name ends in a, when e is added 

 (thus Faverae from Favera). 



(&) When the name ends in a consonant, the letters u are added (thus 

 Magrmsii from Magnus, Gttilliermoudii from Guilliermond) , except 

 when the name ends in -er, when i is added (thus Thaxteri from 

 Thaxter). 



(c) The syllables which are not modified by these endings retain their origi- 



nal spelling, even when the consonants k or w or with groupings of 

 vowels which were not used in classical Latin. Letters foreign to 

 botanical Latin should be transcribed and diacritic signs suppressed. 

 The Germanic a, o, ii become ae, oe, ue, tlie French e, e, e become 

 generally e. The diaeresis sign should be used where required. 



(d) When epithets taken from the name of a person have an adjectival form 



they are formed in a similar way (e. g. Geranium Eohertianum, 

 Verbena Hasslerana). 



XLI. The same provisions apply to epithets formed from the names of women. 

 When these have a substantival form they are given a feminine termination (e. g. 

 Cypripedium JSookerae, Bosa Beatricis, Scabiosa Olgae, Omphalodes Luciliae.) 



