3a - Poselger Sept. 2. l86l 



so that not a sign of wool or forme rly present fruit- can be obser- 

 ved. If one opens the tuber des on the sunmit, however, one f inds; 

 a na ss of dense, red, new ™ool,in which' very riany soft seeds are 

 present". > 



Sch . Scheerii The well executed pictures show only yourr- 



ger st>ecimens of this^ beautiful Speeles. I found considerablyv lar- 

 ger speeimens, which therr develop a somewhat different habitus,, irr 

 such a way, that the Upper central spines become longer, and extend 

 with the also elongated' radial spines f^on the vortex of the plante 

 The round, white roots are runners-, which spread close below the 

 sandy surface of the earth and forn at their terminal a new plant. 

 This peculiarity is not known to me for any other cactus. 



S' setispinus . This species prospers nost excellently in euro- 

 paean collections, multiplies easily, and provid.es all through the 

 Summer its beautiful and plentiful flowers*. Ol der speeimens easiw 

 ly sprout , which I did not observe in their homeland. . Seed produ~ 

 ced speeimens vary a great deal concerning length and curvature of 

 spines, color and form of f 1 owers , e t e . . Remarkabl e for me is, that 

 the exnedition. did not find the P. setusrinus tenuls . a divergin# 

 variety, common in Texas. 



Z'J'^sT-^enl is now rather frequent in /ferman collections. The 

 plants nay derive fron the seed, which you sent earlier. The lar- 

 gest speeimens nay have now a dianeter of 5-6" and vay substantia- 

 lly in habitus. 



With Cer. yirldiflorus it was very interesting to me,, to see the 

 different developments of the central spines illustratetf; it is 

 quite sinilar as with C. pefttinatus - var. arnatus . Of the beautiful 

 Echinocenei I posess only dasyacanthus besides some older ones 

 and. polyacanthus and nrocunbens . Unf ortunately, this divisiorr can 

 hardly brought to flowering with us. In c ontra st , C. tubero sus has 



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