THE WEST AMERICAN SCIENTIST. 63 



Lemmonia Californica Gray. Trichostema micranthum, Gray. 



Hesperochiron Californicus, Watson. Mountains. 



Claytonia exigua, Torr. & Gray. 



Franseria chenopodifolia, Bth. Toclos Santos bay and also on 

 the Tijuana, both sides of the line. 



Erigeron divergens, T. & G. (E. incomptus appears to be the 

 same — a short rayed form). 



Platystigma Californicum, B. & H. 



Tragia stylaris, Mull. Eumex maritimus, L. 



Parkinsonia aculeata, L. — in cultivation. 



WASHINGTONIA ROBUSTA, WENDLAND. 



Few American botanists are probably aware that a second species 

 of Washingtonia has ever been described from California. The 

 following correspondence explains itself. 



Washingtonia robusta is only a form of W. filifera, much strong- 

 er, smaller, with red leaf -stalks and horizontal growing leaves; I 

 should say a selected form and this form must have also been 

 noticed by the seed collector in California, as he labelled it differ- 

 ently and in fact proved it to be a distinct variety, which has been 

 described from a fine specimen, which belongs here to an amateur, 

 by Herr Professor Wendland, an authority on palms! De S. 



Gand, Belgium, Nov. 28, 1884. 



As far as we can ascertain the original locality of Washingtonia 

 robusta is the border of the Sacramento river in California. 



V. A. & Co., Paris. 



Revue Horticole, for 1883, says of W. robusta that it was first 

 exhibited at the International exhibition at Ghent in 1883 and 

 was awarded 3d. prize for new palms; also that it is "a species 

 "remarkable from its resemblance to Pritchardia filifera, from 

 "which however there are notable differences; it also possesses the 

 "advantage of adapting itself to pot culture." I find nowhere any 

 fuller description of this species. I saw it growing at Federal 

 Point, Florida, in the grounds of E. H. Hart, with W. filifera 

 close by; it had not differentiated enough for me to see much 

 difference at that time. It was four or five feet high with 

 bright pea-green leaves covered with white threads like the other. 



Mr. Hart writes that he now notices a very marked difference 

 between them; the W. filifera when thrifty making a larger leaf 



