= 2 “ 
to mention that with most specimens not a siegen of the discarded 
halves could be seen, and I asked myself, if this may not be a 
healinz or reproduction process of tubers, which were damaged’ in 
part by dampness or drought ?° 
Hall should gather specimens next year in April, then the 
matter will be solved through evidence, but also this year, if 
a new, second veszetative period arrives, 
The miniature tubers, 2-3 mm in lengthwise crosscuts are 
daifficult to dSsect,hard, totally different from those soft pie- 
ces from the first vegetation, which have achieved their fv1ll 
maturity, while these (The minute ones EsD,) will reach it not 
before September. 
Lsoetes riparia I think it best to send to you the most 
important drawings,which you may return to me sometime after you 
have used them. They are self-explanatory.- During October 1860 
' I drew old tubers, which had produced a re These tu - 
bers were like two pushed together little balls of clay,slishtly 
flattened on TE FR slishtly 2-lobed. With them I found ( 
drawn at the bottom to the riecht) a small tuber in a form not 
comprehensible to me. But the very smallest ones, which I examined 
presently explain the form. From these latter ones you can see 
how the tubers separate to both sides, and, in the process ex- 
Ceeds to risht and left the heishth,forms lobes,which are being 
entirely cut off when disected horicädtally and fall off. Ina 
paper you find such erh a and other vertical sections.Also, 
with new growth the old bumpy tuber, on which the black-brom, 
ü 
dead roots are still attached, is pushed to both sides, and a 
which the leaves emerge,posits itself in between, and from this 
emerge fresh, white roots, the latest and shortest ones at the 
very bottom at the middle. 
012 3.456 7 8 9 10 Missour 
| . | BOTANICAL 
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