u Ge 
(3 - 1/3) - What I sent you earlier from Camada was probab- 
ly also riparlia. 
I have arranged a listing of all localities in Amerca and the date 
of the first find. 
Did you get to see the orizinal specimens of Pursch in the eng- 
1isx herbaria ? This was most likely the first Isoetes collected in 
America. At the locality reported by him none has ever been found a- 
gain. The area however (westerly New York) points to Braunii Nuttall 
b1ı 1815 I.riparia. Of these canadian Isoetes you say, that 
of the air-shaft be one cell-layer thick ! In I.riparia I found 7 
layers deep. 
In cubana I find those of the median sheath from 4_5,those ib back 
of the middle 1-2,the crosswalls 2 celllayers strong, 
May 2. Today I examined a fragment of a leaf of v.g.from Cap. 
Isoetes, of which I send to you herewith all I had retained from Ge- 
orz'!s herbarium. May the spores not be mashed.The leaf is small and 
firm,only 0.8 mm broad (unfortunately, I did not note the lenesth, be- 
lieve however, that it was 10-12 "* long and numberes 10-12) Many 
stomata (verbatim translation: split openings,E.D.) in the seedling; 
inner bundles with copious spiral cells;in the parenchyma I find 2 
very'stronge ones at the upper edge, otherwise only „..s.crrreree Now, 
look for voursekf if you find more! Crosscut very thin,middle one 
very thick.I have succeeded to make them less than 1/10 mm thick, 
Now I close and will write again after I hear more from you, 
or if something unusual is to be reported - Your wife has likely 
recovered entirely. Many greetings 
Your G. Enzelmann 
(transiated from German script by Edgar Denison 
St. Louis, Mo. January 4, 1988) 
7 8 9 10 MIıSSOURI 
. BOTANICAL 
copyright reserved GARDEN 
