Méwico (1909) 20) stated that O. Lagopus grew in 'Ta- 
basco. This is apparently the source of Standley’s report 
referred to above. 
In 1926, Professor Maximino Martinez of Mexico City 
sent two specimens of Ochroma to Record for determi- 
nation. He stated in a letter accompanying the collec- 
tions: ‘‘En la literatura de que despongo no se dice que 
exista en este pais, sin embargo de que lo hay con abun- 
dincia en Tabasco y Vera Cruz. No he visto las flores y 
no he podido determinar la especie.’’ ‘These specimens 
cited above are apparently the first Mexican collections 
which are represented in herbaria. In Las plantas mas 
utiles que evisten en la Republica Mewicana (1928) 248- 
250, Martinez pointed out that this genus had been hither- 
to unknown from Mexico, but that it was now represented 
in Tecolotepec, Vera Cruz, and from other localities in 
Tabasco, Oaxaca and Chiapas. 
Llewelyn Williams collected specimens of Ochroma 
from the Isthmus of Tehuantepec which are referable to 
O. pyramidale var. concolor. He reported his collections 
(in Lilloa 4 (1939) 157, 166) as Ochroma concolor Rowlee. 
Williams’ collections from Ubero are apparently the first 
from the State of Oaxaca. Schultes & Reko 692 represents 
the most northern collection of the variety. 
An examination of the collections of Ochroma from 
Mexico indicates that the slight characters which Rowlee 
used to separate the West Indian Ochroma pyramidale 
from O. concolor break down. There has been a general 
tendency to doubt the specific validity of the numerous 
Central American ‘‘species’’ of Ochroma, For example, 
Standley stated (in Field Mus. Nat. Hist. Bot. Ser. 18 
(1937) 681): ‘‘Rowlee, who studied the trees in their 
native habits, recognized nine species, four of them Cen- 
tral American. I do not believe that there are so many 
of them in Central America, and it seems far from cer- 
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