Hegelmai er 



Wöv. 18,1864 



3 



The forms from Calabria and Sicily were mostly as large frui- 

 ted as gf autumnalls ; the north ern ones have in part somewhat 

 smaller fruitt With good and correctly treated material, one can 

 easily convince oneself,that the halves of the fruit are separa- 



correspond with each other.and are dif f erentiated from all' other- 

 forms known to me. The netxsrork of dried cells f which. is found on 

 the flesh of the fruit, is that illustrated by me beyond any doubt 

 on table T II, f ig« 2? and T. IV t 2, ? and described in the text; 

 it glistens through 1 the dried, outer parenchyma cells. 



Very interesting to me was, what you say about the occurence 

 of CT. ovata ( I assume Callitriche ? E.D.) in the Northwest of 

 Germany. Here and in Holland C. autumnalis is mentioned, though I 

 did not have the luck 1 to see something there and also noticed' this 



for . . . ?.W I thought in Rilley, that at least the 



dutch form could belong to . IPfW&Äfir. . as this one has tra - 

 velled to Belgiumv Now I will try to get material from this re- 

 gion. . 



Would you not be able to find out, if the the fruit of 0.. 



marginata /. mentioned by you f , fits into the central structure, 

 as I explained and illustrated for C. macropterix or into the com- 

 mon one ? The New-holland species dif fers in this point most strl- 

 kingly from^ all ' eu- and pseiido-^allistrichae of America, which irr 

 general agree in the important point of ckiscentric fruit struc- 

 ture. It would be most interesting, if this one would have a rela- 

 tive in California,. 



As. C. lurfo sär/you have, according to your notes, an entirely 



different plant in hand than the one in the Berlin herbarium. 

 Which one will now be the true one ? In Chile and Peru may be still 



ted to the middle just as with 4%. autumnali s ; in this respect they 



Torr. 



