E 2 = 
betieen the very small specimens of Enselmanrnri from Behtlehem (smal- 
ler than riparia) ‚(which certainly does not come that far north)lie - 
ine a tiny plant of Nuttallii I recognizeable by its fine leaves and 
the thick halves of the tuber. I Nuttallii’ must be closely related 
to melanopoda; I wrote recently about this. I. Tuckermani is a beau- 
tiful species with prettily marked spores; I kYow it from 2 locall - 
t. 
ties and at both it srows with Braunii, smaller,more delicate,in les- 
ser depth and more sociable. A new discovery is that at Echolake 
l.1scustris Americana and I. Braunii appear together.It seems that 
nobody but I ever found the first,but my fruiting small specimen is 
powerfully characteristic. Mr Boott collected there - Echolake - an 
Ve Kosow 
Isoetes in 1862 and 1863/of which Gray had written to me before his 
death, that it may be related to plants from Winnepeg ........ or 
be identical with them. A few days ago Boott sent specimens from both 
years and I find that the spores are quite definitely of Braunii. 
Tuckermari is also closely related to lacustris, thus, we have here 
lacustris and Tuckermani with Braunii combined as in Europe lacustris 
with echinospora. Just as Boott found new Braunii at Echolake, so 
did Clinton in the Catskills; both missed lacustris,which may be ra- 
rer. I do not know, what Isotes erow in Canada I have no reply to 
fovrıa er | 
several letters - ‚Did my letter written in August to 
Mellenius arrive? 
Your plants are finally here. I shall distribute the Isotes 
immediately. All is of interest to me, but I did puzzle about the 
torn-off tips of Tuckerms .......... and others. I suffer now in re- 
verse (see note 2),i.e. some of the earer correspondents for the Jen= 
son herbarium normale send me giant specimens in large sheets of 
newspapers.How can I bringe them dom to sice and use them, I do not 
know vet, 
Note, what I wrote you recently about Georg and his studies, 
% 
9 MISSOURI 
. BOTANICAL 
