Prince Salm 



Sept. 28, 1848 



enersa s which is t thouirh, very Important. . With all Melocacti the 



germer inclusuur remains, and grows only after anthesis ( often on- 



1t in the comins* year) out of the ,,,♦,,,,,,» of the plant as berry» 



With all other cacti f , where the flower bud never sprouts, it Stands 



as fernen exsertum; it forms the lower part of the tubus, and 



sh^uld perhaps have another nane than Bacca . Your remark about the 



place where the f lower s appear, is correct: With all Melocacti and 



Echinocacti the younger , yearling shoots flower; with Cereus kinds 



however those of the preceding year and probably also the older 



areolesi In the genus Mamillaria_, however, I do not believe, that 



further growth of the stem, or stopping of growth, does make a sub - 



stantial difference; the species, which flower in early Spring, 



keep on growing, and those, which flower in August, finish with the 



flowering their periodic life» The spine bündle s of the Ce^ei and 



Opuntiae have their own life; they continue to form new spine s f , un- 



til they finally die and become woody, and fron this characteristic 



may perhaps be explained the appearance of the flowers fron older- 



areoles, The spine bündle s of the "amiii.^riae and. Echinocacti remain 



unchanged~ f . and the oldest resemble the youngest.. 



The diagnoses of ny sections are derived more from the habitus 



o$ the species, than fron important characters conc erring flowers & 



fruits; on. the one side, because lare by far not all well knowrr,, and 



on the other side, because the purpose of these sections is, to fa- 



cilitate the finding of the species, better achieved through the si- 



milBrity of appearance, than. thronen others, only rarely occuring 



marks. Thus I have a § uncinati in the genus Schinocactus,, for the 



species with curved central spines. The form is striking, and there 



is hardly a reason, to separate these species, I brought this sectiort 



for reasons of more exact structuring into two sub sections, * corni- 



feri'costis convexo-repandi s, crenati s, acutatis, aculeis nascentlbus 

 purpureis,., contrali applanato, annulato, 



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