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DEPARTMENT OF BOTANY 



When you call my attention to the omission. If you will looK thorough 

 Ca3?ex,Sallx and Querciis you will see that hyteids are only referred to 



where they have appeared or been described as species. In accord with 

 this principle of oimnitting hybrids I made no mention of D.marginalisX 

 cristatum as a species nor do I thinX a hybrid can be considered as a 

 species in any scientific sense even tho we recognize them as real and 

 of interest as I do your own form which has recently been sent in 

 ft'om WsmjmmmmCGJ^ Connecticut which adds to the list of localiti 

 es in your recent interesting article in Garden and Porest with its 

 excellent plate. If you had been subjected to the necessity of making 

 your descriptions ofl a standard length as the descriptions of the Illiis - 

 trated flora are on account of the cuts appearing in the teg t and only 

 the head line in any case being possible to run across tne page you Hm 

 understand the infinite patience that the job has ^sm^ as well as the 

 fact that on page 17 there was little space left for more than the 

 briefest allusion to the existence of a hybrids I am sure that if you 

 understand the plan of the work you will be sure that there was nothing 

 further from my mind than to discredit the reality of your hybrid which 

 I believe in as a real existence tho I do not think the evidence of 

 hybridity is complete. It may even be a species but so long as it has 

 not been described as one I do not think that it should be given a 

 place as one. I have hunted as far as opportunity offered for simula- 

 tum but so far have been unsuccessful, I am glad you are going to send 

 us some. I hope to find it sometime but I do not know when for if my 

 plans carry I shall spend all next sumraer (Jvne to Oct.) at Kew and the 

 following su:iiiTier on the continetit. I wish you could come and see me now 



