2 



Prince Salm 



Nx>v. 22, 1855 



'Mtelocacteae 



1 ) Anhal onluar 2 ) ) Pel ec yphora 3) Mamillaria (restricted toc 

 Eumamillaria , or laterlf lorae ) ^ )Melocäctug < 



Ttibus 2 ( Echinocacteae) ) 



the from Mamillaria separated 5) ) Coryphantae or Apicl- 

 f lorae 6) Discocafcus 7) Echinocactus 8) ) Malacocarpus 



Tribus 3 (Oereastreae) ) 



99 ) the genus Echinopsis. (fchose with short-hair flowers do 

 not need to be separated from the long-haired ones,be — 

 cause something similar happens in the genus- Cereus )) 

 10) the above new genus< 11) ) Pilocereus yand last 12) 

 _Cereug- . ' 



This Summer has not been specialis beneficial for the culture of 

 cacti; Pew flowered, and in the genus Opuntlä, where I hoped toc solve 

 several doubis, I did not make much progress.. - Your 0p. clavata 

 does not want to get goingi : it does not seera to like the culture of 

 the other congenus species, and it lives and grows only pitifully?.. 

 Your 0p. fragllis does not seem the true Speeles; it resembles (irr its 

 jouthful State) the 0p. clavata and may belong to the same sectionv 



About what I wrote to Your Wellborrr in my letter of June l6 t L 

 have since given more thought, and remain of the view f! that betweerr 

 the^ Glomerata e and Cyllndraceae a new section Clavat^ is to be in - 



sertefr; which, however is NOT' unifced with Cylandraceae ( as is youir 



V Opüntlae 

 inynt) and forms a mairr section- in the genus.. The truel Cyllndraceae 



I would like to keep clearly separated, in that they are destinecP„in' 



the future to form a new genus^.It is, however, very difficult, to 



get these plants, which grow in different and far distant areas ((fronr 



Mendoza to north of St. Louis) together» and to compare them.. Their 



habitus often changed in our gardens, , they flower rarely* almost ne- 

 ripe 



ver produce jfruits and seeds, and it is almost impossible the judge 

 from young plants, what they will be later. - Of seed-grown plants in 

 the past year, which have grown suf f iciently, so that they can be com- 

 pared, I only find your 0p. setl splna , , Engelmanni i and t phoeacantha 



clavata, which are good and new.. The others (who'se seeds carrie« 



