Ree Auer. 12 1850 Dyck July 13,1850 



Ans.. Dec. 18, 1851 



Your Wellborn 



Letter of May 1 and snall ' shipnent arrived correctly and in gooäc 

 shape. A short absence fron hone and other occupations prohibited 5 ne 

 to thank you earlier for both.. In the neantine, you have probably re- 

 ceived my Cacteae in Hr. Dyck cultae, and. I am anxious to know, if ny 

 arrangement of the f amily f ound your approvall ? r The local botanists,, 

 those, at least, who have worked with cacti : f such as Hr. v. Martius 

 and Mr. Miquet, are entirely in agreement.. 0ther£ refrain fron a 

 judgement about the arrangement itself, and praise the work for the 

 rmmerous illustrations, which it contains., Time alone will clarify the 

 various vlewpoints? and point out the advantagesr^ which the nethodi- 

 cal approach, T^hich I reconend, must hringv I believe, to have expo- 

 sed the advanta^es- to Your Wellborn in ny last letter», and I T-rcmld 

 not have anything to add; as already the Synopsis tables facilitate 

 the overvi ew of the entire work'. For a conplete understanding be - 

 tween different Wardens, the certainty is aniss about the naming of 

 the same plänts with similar mnes.a^d /rood illustrations could be of 

 help; because even the most exaet diaprnoses are not sufficient., 



Of the cacti, which Your Wellborn sent to ne, the two Hanillarlae 

 became entirely brittle and are thus lost; the other s have all reco- 

 vered. The ball-shaped Gereut fron the area of MexicOyl first con- 

 sidered' as Cer,candicans ; but it dif fers fron this and probably be- 

 longs to **■ Lophogoni - ++ Decagonl t: In consequence, it would be a new 

 Speeles. The Cer.ro. Lyac - -thus I had reeeived fron you in a previous 

 shipment, and entered in ny work.. The new Opuntia, (which must stand 

 next to Op. clavata) grows quite healthily and. gives ne mich plea - 

 sure. Had I known it earlier, I would perhaps made (fron it and cla- 

 vata) a snall subdivi sion. . The little grafts of Op. vaginata.^rtiich 

 are really quite similar to. O.frut escens) ) grow also; but seem to 



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BOTANICAL 



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