■ ■ 
■ ■ 
BS 
Bl 
:: Organ zur Förderung des Austausches 
wissenschaftlicher Exsiccafensammlungen. 
Verlag von Theodor Oswald Weigel in Leipzig. 
:::::::: Erscheint in zwanglosen Zwischenräumen. :::::::: 
Auf Wunsch regelmäßige und kostenlose Zusendung. 
Mexican plants. 
Nachstehender Brief vom Herausgeber der bekannten „Plantae 
Mexicanae“ dürfte weitere Kreise interessieren. 
My dear Sir: 
In reply to your request of Nov. 13th. I am compelled to 
say that I believe it to be absolutely impossible to buy in America 
a complete set of my Mexican collections. By scanning carefully 
my lists of customers 1 see that all have gone into the herbaria 
of public institutions, from which they can never be extracted. 
I am sure that you will be pleased to know by this of my 
safe return from my twenty fourth year of botanical collecting in 
Mexico, and that I have as usual brought out large and valuable 
collections. 
On this latest journey, though I have been careful not to 
leave behind any phanerogams not already distributed, my chief 
attention has been given to collecting cryptogams too much neg- 
lected by me heretofore on account of the impossibility of deter- 
mining such plants in this country. Now, however, I am encouraged 
to collect these in Mexico with all possible thoroughness by the 
fact that Messrs. Cardot and Stephani are pleased to study my 
musci and other authorities my lichens, fungi. etc. Of Mexican 
musci frondosi I have already secured five hundred and fifty numbers. 
Contrary to the inference of M. Bescherelles expressed in his 
Prodromus Bryologiae Mexicanae these plants, as previously filices, 
have been found abundant enough on the Pacific side of Mexico; 
so it is thought probable that a careful survey of Mexico through- 
out its entire extent may yield four fold the number of species 
known to M. Bescherelles. 
The Western cordilleras (the Sierra Madre Occidental) which 
extend the entire length of Mexico through nearly two thousand 
miles are favored at midsummer with a good amount of rainfall, 
in consequence of which they are well forested; and the deep 
Verlag- von Theodor Oswald Weigel in Leipzig, 
