Starting Point of Botanical Nomenclature 491 



§ L : Rapistnnn § L.— fs clear although united under Myagrnm - 

 m theyear 1753, when these sections (§ = subgenera = genera 

 discretionana) are omitted, we must decide ..r/.^/"/. ^.r/m' else the 

 matter loses its clearness and becomes confused. The case is the 



Diinorphoth 



etc. The following names are thus obtained from the §§ of 1V37 

 for later renewed genera: Acacia, Alhagi, Arnica*^-^ , Arisanim 



Capnorchis'^ , Castanca'^'^ 



Capjiodc 



n 



Dimorphothcca, Dracnnadus, EchinopJiora, Ekphas, Focni- 

 Hcliauthcmum, Hc/L-borodes* , Hypocistis, JontJdaspi, Lan- 



§ (= Oft 



p/mca* (= Nymph 



aiut. recent.!), Nymphaea (= Nuphar !), LUtastrum, Limonhnn 

 Majorana, Malvaviscus, Meibomia\ Meldotus, Melocactus, Muscari 

 hehnnbo, Myagnan, Onobryc/ds, Opuutia, Paliurus, Polygouatum, 

 Raphamstrum, Rapistrwn, Rhagadiolus, Securidaca (Securigera 



iphoricaip 



■ipeniiuiu, Trol- 

 (One * means that Lin- 



hns-^, Tulipifera, Unifolium, Zacintha-^^.- ^ _^ 



nadus gave such an * to these names in the inderof his 

 Genera Plantarun^ ; ** means that Linnaeus had that name 

 in 1735 for a genus; *** indicates both.) 

 From these discretionary genera considered by Linnaeus and 

 other authors at one time as genera, at another time as sections a 

 systematic decision is easy ; only two dubious cases (^ccur • the 

 first rare case is that the same group (..) received two names, such 

 as Sida and Malvinda- then the genus name, which received first 

 a species name, is valid. The other case is that three to four 

 names occur for the same now united group; then the name under 

 which they were first correctly united, is to be valid. For in- 

 stance. Lonicera I'j^j consists of four genera and is thus confused ■ 

 Haller after exclusion of the genera not belonging thereto first 

 united Caprifolium, Periclymeimm, Chamacccmsus, Xylosteum under 

 Capnfohum. Lobelia PI. is correctly defined as a § and is therefore 

 to be excluded; the rest was named then at first 7?^//././///;//, under 

 which name most of the species are already named in the mono- 

 graph of Presl. Some genera would have to receive new names, 

 if their name were not secured from the 5 



Helian 



thcmum. The name Cactus, after exclusion of the §§ of 1737,. 

 remains good for the remaining part. "[ 



