Hegelmaier 



Oct. 3. 186? 



the seedlings and roots, just as this is quite common here.with 

 the 'seedlings suf fering badly under these guests.. Further, you 

 sent me then Lemna gibba O /Yrom the Palatinat.I was this year 

 not less than 3 tiraes in the same area only for the sake of the Lern - 

 nas , and, as you see, have found all the desired; You will get 

 samples of this» . 



Finally your last and most important shipment of August 21. 

 What Mr. Hall ! communicates from Illinois, is, as you probably have 

 found out yourself in the meantime, , L. per^uSt'tfa y multlrostrata . 

 not minor . You ask, why I do not know multl - and parvi - rostrata T 

 The first has seeds (could be another word.E.D. ) , which have usually 

 40 - 45 ribs (|which many are wavy or humped) ; wfcth the above menti- 

 oned species I find 60 - 62. The latter has on the specimens fromr 

 Missouri 12 - 15 ribs, .wtear*. the f?^Yt^f¥n y Erl Karsten has named 

 L. Hegelmaieri , has 18 - 20..Should one Cover all those variations 

 with specific naraes ? The essential of the difference can only be de- 

 termined through a history of development of the septa, about which- 

 I do not want to hold a lecture for you now.I am totally convinced,, 

 that,if we had a complete assortmentof forms,there would probably be 

 one with' seeds of 30 ribs between them;. until then, the-re is no real" 

 transition at hand. . However, though I am not very persuaded by the 

 name given by Karsten, I have retained the method of treatment .adop- 

 ted by me od the subject, because I would/indeed be not capable.to 

 distinguish multi - and parvi -rostrate in the sterile stage. I may 

 eventually venture, to distinguish sterile minor and sterile pV^V^.K/V; 

 though* the first in habitus and the latter also in size show extreme 

 variations.. 



Further, you send me L. minor from New Mexico (Fendler N" 1000).. 

 I am until now, despite youf remarks, of the opinion, that the 



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