The plant from which I sent you seeds under the name Echinopsis yacutulana is certainly the Echinopsis 

 campylacantha.1 will come back with more information in another letter on this plant from the Republic 

 of Argentina, that seems to be extremely similar to the Cacti, after making a judgement of what I know 

 at this moment.What you have told me in your last letter in regards to the variability of the floral scope 

 of the Agaves, did not surprise me. You already know what I wrote you in the past regarding the floral 

 scope of the Agave Verschqffelti; at the Botanical Garden of Lyon, where there was a magnificent 

 collection of Agaves. I saw at least ten plants flower that were labeled as Agave Verschaffelti (old plants 

 originally from Mexico); one or two of them had specific crowns and others had secondary floral 

 branches that were longer, forming real panicles! I had several drawings made of these floral types and 

 in time I will send you one. I also saw the flowering of the Agave xylinacantha with a terniflora or 

 quaterniflora arrangement. In the latter the 4 flowers are in a real secondary branch. In other words, 

 there are true transitions between the Geminiflora and the Paniculata. 



There are in our European collections a large number of Agaves, very difficult to classify; perhaps they 

 are hybrids because our horticulturists (mostly from Provence and from Italy), have created numerous 

 new types by artificial grafting. I have at this moment under my eyes the floral crown of an Agave that I 

 found ( after it flowered) at the home of an amateur in Grenoble; he told me that he received it as a 

 hybrid variety of the Agave Verschaffelti, crossed with the Agave füifera or Agave schidigeraV. . This 

 type has its flowers placed four on four at the end of small flattened branches 5 to 6 mm. in length. I 

 could send these to you in the mail, if you wish. 



The seeds of the Cereus 'Titaya" found by Parry in Saltillo interested me very much. I could not 

 decipher the name on the tag. I sent it to you: "abundant in ? and Saltillo". I can teil you that the 

 discovery of this large Cereus of 20-29 feet in height, surprised me enormously. I lived in these regions 

 for more that one year and I can assure you that a Cereus arborescent does not exist along the route 

 from Saltillo and Monterrey to the Rio Grande. The old Cereus that are found along this region, north of 

 San Luis Potosi, are the Echinocereus; one can also find some Echinocereus geometricans ( very 

 rarely), stunted and miserable, or some Cereus marginatus planted to form a fence. But, I repeat, the 

 arborescent Vegetation of the Cereus does not exist in Saltillo. To find them one has to descend into the 

 Valleys en route to the Gulf of Mexico. On examining the seeds, I realize that I do not know that species 

 described by Parry, on which I would like to have more precise details than the ones you have sent me. 

 It is certainly not my Cereus Queretarensis. I have sown the seeds and I will await for the results. 



Another letter will follow soon. In the meantime, good health and much friendship. 



Alb.Weber 



Translation: M. Thurmann 



Weber, Alb. Frederic 



