St. Louis October 30,1866 
Dear Braun 
Only a week ago I wrote to you and at the same time sent a 
thick package of tubers of Isoetes. Unfortunately, they laid too 
because it will be a long time before such a collection can be zotten 
together again. Just now people here are interested in Isoetes 
and work much with it; later, after the spores have been identi - 
fied, it will cool and it will be difficult to get it together agaln.. 
Wm, Boott, the discoverer of I.muricata did finally find also 
I. Tuckermani again and sent 1t to me. It grew with L.Braunil in 
Mystic Pond at its outlet,where low and hish tides come in,but never- 
theless always below water. It looks entirely like Braunii, but is 
more zraceful, the leaves of the former only 1% -13 mm broad, the main 
difference exists in the spores, which, . as you have said already, 
are similar to those of I. lacustris and riparlia,but are formed on 
the lower hemisphere auite honey-comb like, almost like Engelmanni. 
Enclosed you find live specimens. I kept them fresh already one 
week,will they be in three weeks ? Ihope so in this cool time of the 
i 
vear. But, won't it be too cold in Berlin ?° 
The plants are in their second srowth. All microspores on the 
outside, or stfile leaves, and inside of them new, young macro - 
spores, still juvenile. However one finds also a few old,ripe macro- 
spores. I pack them in watertisht bast,hopinez that letter and plants 
will thus protect each other. 
EEE 
6 
WPPEEEREBEER 
Note on side of paze 1: 
Besides Isoetes another waterplant came along in the package, 
Eleocharis ?'! 
8 9 10 MIıSSOURI 
BOTANICAL 
copyright reserved GARDEN 
