that 
The discovery, 
tinz - does the velum go hand in hand with 
5 
the Isoetes began in Iceland 
i it 3 
is very interes- 
siderinz the size 
of the \microspores and the form of the leaves,which is not like any 
europsaen for any american, one can come to conclusions about the 
difference of the species. I too found the size of the spores for 
specimens fr 
several 
tween 0,52-0.53°. 
I never found the velum of muricata 
almost entirely, mos 
The 
tozether, without do 
vided with the label 
Enzrelmanni 
Forter lives now nea 
I herewith put the p 
spores 0.47-0.56, mic 
Should one not say, 
under cäircumstances 
Pr 
I.Engelmanni 
place it was found i 
vear is 
2 
specime 
l 
Fk 
found 1 or 
weissen - 
/ even 
jyas a variety worthy 
named 
be better/rupe 
sen or 
„not 
nd 
ku 
tris 
came from 
Should one 
known ? Thus, 
ia 
om the Catskills and the Nia 
Echolake to 0.50. 
tly only one half, as 
covering 
the above 
sara zenerally be- 
the 
sketch 
thus threw different plant Isoetes 
ubt from differenrt localitie 
"Behltlehen", I have little 
r Bethlehem and I will take 
lant from Bethlehem of 
rospores very lishtly 
that vascnmlar burdles may be 
‚which otherwise do not have 
s the ba and only for a 
I would not recognize 
+ 
the vicinity of Philadelph 
Duran 
hilly 
distineuish variet 
furcata, 
s, but all were pro- 
doubt that the larrze 
ia, or, I believe so.- 
a good look this year. 
t to riparia, 
nacro= 
0.028-0.032mm. 
yı 
ies,when 
very few 
of 
ns (the German 
nt E.D.) 
to be 
( 
” 
s 
on wet water-rock). 
find (as for Cubana) 
hardly or 
corenize theilivine plants of D 
Yow florida 
Dvosterior.- The 
w 
oriyv weakly for ambisua. Acc 
be a weak 
8 9 
10 
copyright reserved 
nav=-be IRZURaMEX 
fo 
word could be Rie- 
Missouri in 1%%42 
- 
n 
would 
the frontal median 
same roes for muri 
ordinely one may re- 
rm of Chapmani, 
