- Prince Salm 1 



June 16 1 I855 



Now, though, your Opuntia "petalis 1 i n e ar 1 - subul a t i s , not my Op« 

 grandls pag« 237 Tin the description you will find, that the pistiU 

 deviated from the normal shape in the genus;;,the color of the small 1 „ 

 somewhat fleshy petals is surprising, and, if this Opuntia (who f se 

 name is absurd)- is not identically yours ?? then it is a second spe- 

 cies- "petalii lineari -subulat ls % Pfeiffer did describe it in his 

 inumeratio; It only fl owered at Dyck in 1849, It always says Patria 

 Mexico ! but it could be just as well the area of Saltillo.. 



Your Organization of the Op+cylandraceae seems to me not to be ad- 



equate in order to place all known species in a proper place;- my own 



was also not adequate; in that I had to place your Op»clava into the 



Platyacantha» . If this would be the only species ?? I would leave it 



under the Platyacanthls; You seera to have however several, . which are 



unknown to ys in Europe; One factore, though., keeps me in doubt about 



the question-, if your Op, clavata should not form its owrr § , separa- 



ted from the cylandraceae ??Yöu say of the clavatis 11,1 prostrata,, 



redicantis n umquam lignosae w and this last character, seems to me,, 



to separate thenr at last from the cylandracels, on account of their- 



more or less woody stern^ forraing the transitiorr to the tree-like Op. 



brasiliensis, and to the genus Peirescia». Because Op»platyacantha 



and glomerata are unknown to yovc; you cannot judge properly the affi- 



nities; 1 to me, ((though v I< know only one species) ) it seems more expedient 



to introduce a new Clavata e, between glomerata and cylandacea; 



to which the Op.clavarioides could be attached. — Thus, the cep. cy - 



landraceae H caule lignoso, frutescente vel arborescente" would stand 



~~ 'i'eretiores; 

 by itself.^Yöu divide them into f cristatae and ^ ßcaxfekaxisxx; one 



would still have to take care of! Op.vestita and floccosa, as wellas 



the two Op.cylifadrica and pulverulenta» . This can be done easily, if 



you want to first divide the section into » Tuberculatae and 



