
          Tuesday, Jany. [January] 20th


 Dear Doctor 


 I got yesterday your 
 favor of the 15th postmarked 
 17th inst. [instant] & have set Hochstein 
 at Engelm's [Engelmann's] Acanthoceltis, 
 wondering the while at your 
 notion of figuring such an 
 interesting thing. I believe, 
 however, it has still the advantage
 of being an undescribed Celtis.
 (it is not C. [Celtis] aculeata Sw. [Swartz])
 It is a Celtis � Mertensia
 Planchon, Ann. Sci. Nat. [Annales des Sciences Naturelles], 3d ser. [series] 10, p. [page]
 308, or better � Momisia,
 Miq. [Miquel?] in Fl. Brasil. [Flora Brasiliensis], p. 173. (He
 has at the end an enum. [enumeration] of the other 
 spec. [species] he knows, & does not take in this,
 nor does Planchon. So it is probably 
 new still.

        