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Bignonia linearis , and now occurs under the name of Chilopsis linearis « Dr. Gregg 

 has also described them under the Mexican name Mimbre, Furthermore also seed of a 



Poinceana very similar to Gilliesii from South America and declared as this, however 

 I believe that they are different in habit and . about the flower I cannot 

 judge, since the Gilliesii will not come into bloom for several weeks. Furthermore 

 seed of a pale blue Ipomea , leaves deeply serated, in the root 



Of cactus I have been collecting for several years, but doubt that there is 

 anything new among them for you. Several weeks ago I received from Saltillo several 

 very beautiful Mammilerias , Cereus and Sefeino. , but am not yet clear as to their names, 

 several of them will soon be in bloom and will thereby make identif ication easier. 



From Cereus I have Straminens , Poemeri , Panrispinus , Gregsdi , einarescens , 

 caespitosus enneacanthus , Tüchinocactus sinuatus setispinus texensis a Mammilaria 

 applanata , macromeris , tubercalosa , perhaps also ^chinus semiaeantha Opuntia arborescens , 

 Davisii , frutescens , of the last a variety with striking, aptsro^imately 1-1" -1/2 inch 

 long yellow thorns, also rufida and Macrochiza of which you say in "Cactaceae of the 



Boundary" that it is only different from Rafinesquii through the roots, 



which perhaps only lies in the soil, because on one specimen I observed, that these 

 bulbous roots disappear by transplanting in light porous ground. 



If you believe that I can be of help to you in obtaining cacti, then please 

 let me know, I will also gladly send you an exact list. 



Asking again that you excuse me for troubling you I am, 



Pespectfully 



Otto Ludwig 



