Hegelmaier Dec. 18, , 1866 _ 2 _ 



not exist) and minor, to the latter belong besldes others also 

 the plants from Cüba (Wright Wo. 3215) )as also Grisebach (Catal. pl- 

 Cub.) determined them anyhow, the very flrst vlew will teil youi,, 

 which belong to this or that of the 3 named species, as long as you 

 know, that no others are with them, Finally, H, perpugilla Torr, is 

 after all that beautiful raaterial', a most out Standing, systemati- 

 cally and morphologically interestlng? species, the study of which 

 occupied me rather longp-and still occupies< and the name of whicit 

 became known to me only through your coramunicatiorrs I believe to 

 have gathered the lemnological literature pretty completelyv but 

 I see at this occasion, that this was not the case. I T actualljr do 

 not know, where and if this plant- of Torrey has been described5,and 

 would be very much obliged to you t if on occasion, perhaps by way 

 of Berlin,, you would give me this notation with a Single word . If 

 have seen this little plant besides your fl owering specimen fromr 

 Few Jersey, only from Illinois as a new species from Hon, v. Leon- 

 hardt, who had found it besides "triSulcc^ and polyrrhlza^ and 

 an Utricularia sent by you, The name was - as mentioned - unknown 

 to me (and him) , and further I have no idea,how far the plant 

 may be distributedr in Amerika,. 



The family of water-lenses< (the German word for Lemnae,E. D, .) 

 is, as appears by and by, ,not that small, and tropical America has 

 several stränge species, As few difficulties make the differences 

 of the latter" and as piain de velop thus the systematic conditions,, 

 as difficult - at least in part - is the morphology, and for that 

 reasonr the work cannot be launched right away; but, I believe, the 

 major part of the examinations has been corapleted. . Dilletantism has 

 recently in England thrown itself with preference on these plants,, 

 without even touching on the difficult questions. The american lite- 

 rature is to us in Germany much too little knowrr and available, as 







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