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condmons, but then I had only three species of Eumamillaria, pasilla, texana, applanata 

 and the spec.es of which I had sent you seeds under the name of M. glabrata ( At the 

 Universal Exposition of Paris, I saw plants named glabratta, they are different from 

 those from Monterey, and I must say would respond differently to those describe by 



Therefore all three of these species have an externa! ovary. I see on the drawings of 

 your Bound. Comm Rep., that in all the Mamillaria flowers that have been drawn the 

 ovary is very distmctly marked and therefore is not immersed There would anywav be 

 species ; in which the ovary would be immersed, however this would not be sufficient to 

 make the basis of a Classification; it would be much to inconstant and could say 

 bumamillana ovarium emersum or plus minus immersum 



You have studied the emergence of the ovary in the Anhalonium. I am going to prove it 

 m the Anhalonium pnsmaticum, elongatum and sulcatum. This last species forms the 

 transmon with the Pelecyphora, who under no conditio« one could consider a distinct 

 gender and which is nothing eise but an Anhalonium. I did not see any open flowers 

 but there position just as that of the fruits is identical with that of the flowers of the ' 

 Anhalonium sulcatum, and I did not see a Single case where the ovary was emergent It 

 is true hat one finds the seeds between the tubercles; this is because the flowers are 

 vertical, the base is small and like in the Anhalonium they are found compressed 

 between the tubercles of the summit that Start increasing in number after the blooming 

 season. But .t is without doubt one of the numerous errors that escaped from the author 

 This species onginated in Mexico and all the Observation of species that can be found 

 again in large distances, are, in my opinion erroneous. The greatest number of 

 Aulacotheia seem to come from the northern provinces while the Eumamillaria are 

 found mainly in the south. 



Now, after I have told you which the genders are that I plan to admit in our First 

 Section (Gymnocarpa), and which are the fundamental characteristics that to me could 

 differennate them, I have to teil you about a plant that you no doubt know better that I 

 and that is an absolute pari of the First Section. This plant, of which I would like to 

 have your advice is your Mamillaria micromeris. 



I found in the arid and porous plains, approximately two leagues from Saltillo on the 

 edges of the route that goes from Sal ti llo to Monterey, some rare specimens of the plant 

 that you have descnbed under the name Mamillaria micromeris var. Greggii I was 

 unab e to preserve any of them, they all died before arrivmg in France so that I was not 

 able to examine them again and all what I have to teil you about comes from my notes 

 I will copy word for word what I have written ,n my note books in regards this plant 



Globulous, s,mpk, sometimes branched, poplycephalic, after destroying the head The 

 largest specimen that I found is 4 cms. in diameter.. It corresponds entirely to the 

 descnption of the Mamillaria micromeris var. Greggii, given by Engelmann in Bound 

 Cotrim Rep. The samples did not have flowers (November 1869), but dried and mature 

 truits in the midst of the wool on the summit. While carefully d 1S secting two plants I 

 was convinced that the inflorescence is entirely central or vertical, as well as in the' 

 cornitera. The vertex is protbundly depressed and sunk in. On this species of the high 

 plains the mam.lla are small and poorly shaped. On fts summit there are already the 

 rudiments of the thorns and abundant and lengthy woolen down. This helps form the 

 spec.es with the thorns of the cephalium, that makes the plant so unusual" 



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 Botanical 

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