Hegelmaier 



Ree. July 15, 1870 



ans. Aug. 17 



Tübingen? June 26,.l870 



Möst Hbnored Friend ! 



Receive my best thanks for the recent shipment, about whiefr 

 you may perhaps express an opiniorr; but this is not so easy,because 

 the two in the related number (Florida lac.Canby) off er by them- - 

 selves and with the Lemnae W).xed with Azolla ,, each by itself a 

 little problera. - The one, larger one,fewer present f ormvbelongs to 

 the 3-^erous and probably steril e.anyway with atropic seeds% H. group 

 °f perpusilla . To me it seems probable, that theyvare to be designa- 

 ted as perpusilla rather tha n feu pauciCostata. , and that on account+ of 

 several! vegetative marks, primarly the condition of the wings orr the 

 root-di sks, which^, though present, are nevertheless very smalli, as I 

 always found for L T . perpusilla . whereas the other broader fits en- 

 tirely accordlng to the rul^. But I do not want to base an apodictic 

 (i.e. ••finite" E.D. ) diasrnosis upon this nor other vegetative points f? 

 and it would be of special interest to me,to get a point of reference,* 

 specialis from that territory,, from which I do not know with certain- 

 ty neither the one nor the other of the questionable Speeles.. 



The other, also sterile, , belongs into the exclusivly americarc,, 

 from the United States to Patagonia spreading, group of forms with & 

 1-merous sproutt The merabers of this group are very many^and Ii re- 

 ceived just during the last year-an entire series for studyy however 

 all of them are known> only as sterile with exceptio^ of the valdi - 

 vlana , the fruiting form of which I am endebted to the Hon. Austirr.. 

 I have forms as the present one (ä very slmilar one I reeeived- once 

 from you from the Uni orr territory from New Mexico) ) since then desig- 

 nated in my and foreign collections as D. ( Valdi vi ana var.?*) abbreviata, . 

 because they are much shorter and relatively broader than the typical 1 ,, 

 and though one may meet with forms, with whom one is in doubt,. if they 

 belong- entirelF to the latter or to abbrevlata , , and, as on the other 



