ee 
and that of the Isoetes; Gray made certain changes arbitrarily, 38 
he is a friend of compacted brevity, but that cannot be changed 
any more. I see, that he too ienored ambisua. This brings to my 
mind: should the name Braunii, as you definitively demand, be eradi- 
cated, then muricata should designate the american species,if you 
consider it parallel with echinospora and coordinated with it, and 
the name would also be parallel; For I do not Aoubt, that you will 
have to combine muricata with ambisgsua - Brauniil - as demarded by the 
long, green leaves of the Catskill and other forms,which you yourself 
are inclined to join with muricata. And, you too have found sto- 
mata in all. 
I'hare now received again a specimen of Chapmani from Chapm,;; 
it completely abers with that in the Gray herbariums Unfortunately, 
the locality of the Chapman cannot be reached now. When I gave that 
name, a most incomplete description of the florida in the 18,4 Flora 
seduced me; also the data about Isoetes Sandia were much too in - 
complete; present studies of professionals suffice, and they show 
striking relationship of the two - making Chapmani may be better 
registered as a subspecies rather than asa species. 
I do not find stomata always in Califorrica ‚eften however 
in quantities and definitive; thef seem to be absent entirely in 
lower part of the leaves and seem to be entirely 
thexaukErnmuaxkxkzaNasxamixkhaxkuwmerxgarkxutxkhaexkeaygex absent from 
the outermost leaves; I remarked long ago to you, that they exist 
in individual forms of Braunii and muricata_. I habe never found 
any with Tuckermani examirine repeatedly fresh and dried specimens. 
Nuttall is Nuttal, but Chapan, Tuckernman KG and in... 
Durian said that he lost muricata mixed with other Isoetes; 
he could not distinguish them I-He did not need find the plants; 
all muricate, which I have examined live were distint by the rela- 
tion: of A of the leaf crossections, the frontal 
3 
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