- , 5 - Price Salm May 1, 1848 



Vertex covered with dense wool fron which the ripe "berry hardly pro- 

 trud.es» - In an other case (in the tribus Qpuntiae ) on the other band f . 

 a new genus becane necessary, because the divergent shape of the 

 flower mane it obligatory. A new genus must be unavoidable l) through 

 a entirely new character; it can 2) be only useful and. desirable 

 for the better Organization of the family ( as it would. be the case 

 with the Qpuntiae cylandraceae ) - but one of these two it must/ fit». 

 Your Wellborn und er stand, what I want to say; the new genus must have 

 a purpose. According to the f undamentals, which I have posited?, every 

 modif icatiorr of the tribus characters (my be) sufficient for the 

 creation of a ^enus*; I also assume , that in a so natural f an.il y as 

 that of the cacti, these nodif icat ions cannot be very important,, 

 arid there is no lack 1 of exemple in other natural fanilies of genera 

 based on very minor narks» - Always and ever there is the probleur 

 cui bono ?? And , as long as a section can serve the &mr Service, a 

 new genus is superfluous*. Such is the case with the genus Gymnoca - 

 lycium Pfeiffer, and it could be the sane with your difficult pro- 

 jected genus Echlnocereus » . 



With your Ech » seti spinus it went nagnif icently in Europe.- 

 Mr. Sarin called. it E. Cachetianus - Galeotti'in Brüssel E. narisi - 

 anus - Fennel fron Cassel described it in the Allgem. Garten Zeitung 

 (General Garßen News) as E. . Muhl ent>f ort ii (during last year) - and 

 in this year Mr. Mühlenpfordt describes it hinseif und er the nane 

 1* Amatus Mdihlenpf. and gives at thelsame tine (in the sane issue of 

 the Garßen News) the diagrosis of your £. seti spinus , as that of a 



new species.i Thus, we posess your plant und er 5 dif- 



ferent names*. I had pretty well thought, that setispinus and hanatus 

 had. to be one, and I an glad to have this confirmed, to secure your 

 narainer the priori ty right. . The seeds of E » Wisllzenll sprouted welll 

 for ne. The plant ifeself has also arrived in England, unf ortunateljr 

 dead. 



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 Botanical 

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