Hes-elmaier April 7, 186? 



ging^ here to minor (tew Jersey, Austin; Closter, Austin; Old Qiia- 



rries, St, Loui s, Engelm. ; New Dur harn, Austin ) and further also the 



type from Orange, Mw York,mixed up next to polyrrhiza with the 



small Wolf f ia , which Austin designates as p erpusilla trinervis^ . From 



all this there seeras to emerge: : that , besides the specific american 



Speeles, which flower more often,our fc» Minor is also widely distri- 



buted in Nörthamerica, but , unf ortunately, just as with us, is commonly 



sterile, and only fertile toward the South.. 



L\ gibba from Arizona, Equador and N. Granada are in my opinion 



gigantic. With us in Germany this plant does not grow as robust as 



irr Ptaly, Afrika, and, as I see, in the warmer parts of America., 



About the 2 dubious "species dubiae* 1 LI#. 4 V** Austin and un» 



from 



dulata AustinrI 1 ask for now to excuse me £k:k a pronouncement ,1 shall' 

 in the next months examine carefully the circle of forms belongingr 

 L;.. trisulca. (( which relations seem to belong here))and taking my 

 time and, after that; , I shall also examine the tiny probes.. One knows 

 a Lemna only after weeks and months f having examined her in all dimen- 

 sions, with all possible resourcesr and methodes«. 



Wolffia maxima Aust. (Wright Cuba N. 3215) Ufr my sample of it ig 

 nothing to be found of it* = W, Welwitschil ^ nihil. Seerrr 1 Jburn. of Botany 

 1865" p 11^; the common- appearance in tropical Afrika and America is 

 surprising- I have however seen her also from South American continent,, 

 there can be no doubt about the identitjr; of the african specimens,, 

 which I was permitted to examine,, some were in flower, and I plarr,to 

 publish the related drawings in the determining^ monograph». 



Wolffia Delilii Aust (non Schieide) from Orange, New York, is 

 in my opinion = W« columbiana, Karsterr (Botan. Untersuchungen I, . p. 103) ; 

 I had at the time some several original specimens ( sterile) for exa- 

 minatiorr, and according to the made illustrations (with enlargements); 





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