36 
Krause, Floristische Notizen. 
shew any vital activity for even a short period of time when 
isolated. 
The conclusion to whicli my own observations originally led 
me on this point was that a Chlorophyll body freed from a 
living cell, in the absence of all connection with the nucleus, and 
without any perceptible portion of the general cell plasma being 
adherent to it, might still continue to exhibit for a short time a 
weak power of C02-assimilation. Since, however, in all cases, a 
protoplasmic film of greater or less tenuity, free from Chlorophyll 
and therefore akin to the general cell plasma in nature, may 
surround each living chloroplastid, and yet be always invisible, 
it is impossible to make any dogmatic assertion on this point. 
In any case, however, such a non - chlorophyllous plasmatic 
membrane or investment is surely to be regarded as an integral 
part of the Chlorophyll grain, for it must play a most important 
and indeed essential part in the diosmotic transference of water, 
sugar, salts, gases etc., to and from the chloroplastid. 
In two of the cases mentioned by Kny the adherence of 
the bacterial cilia to the surface of the chloroplastid was supposed 
to indicate that a portion of the general cell-plasma adhered to 
it. This does not, however, necessarily follow, for it might be 
the actual surface of the Chlorophyll body to which the bacterial 
flagellae were adhering, while a similar adherence may be shewn 
when the bacteria come into contact with various gelatinous and 
non-proteid bodies. 
Kny’s positive results therefore may now be regarded as 
practically coinciding with my own, and the fact that isolated 
chloroplastids may continue to assimilate for a short time after 
removal from the parent cell may be accepted as a definitely 
established fact. 
19. April 1898. 
Botanical Department Oxford. 
Floristische Notizen. 
^ Von 
Ernst H. L. Krause 
in Saarlouis. 
(Schluss.) 
8. Die Fulvellae bilden am häufigsten Bastarde, und ihre älteren 
Arten, C. flava Linn4 und C. fulva Goodenough, haben in kleinerem 
Massstabe dieselben systematischen Schwierigkeiten bereitet, wie Rubus 
fru t i c osu s Linne. 
Carex flava meiner Mecklenburgischen Flora ist ebenso wie die 
gleichbenannte Art in Ascherson’g Flora der Provinz Brandenburg auf 
die Beobaehtung basirt, dass zwischen typischer Carex Oederi und 
den im Gebiete vorkommenden verwandten Formen mit grossen und ab- 
