are white and rose-purple in color. The bright seeds are 
abundant and, later in the season, are very noticeable on 
the forest floor beneath the trees. 
BoMBACEAE 
Ochroma pyramidale (Cav.) Urban var. concolor 
(Rowlee) R. EH. Schultes comb. nov. 
Ochroma concolor Rowlee in Journ. Wash. Acad. Sci. 
9 (1919) 161. 
Mexico: Tabasco, Villahermosa, 1926, Martinez s.n. (U.S. Nat. 
Herb. No. 1635968); Vera Cruz, Villa Azueta, 1926, Martinez s.n. 
(U.S. Nat. Herb. No. 1315933); Vera Cruz, Fortufio Coatzacoalcos 
River, alt. 30-50 m., February-March 1937, Llewelyn Williams 8923; 
Oaxaca, District of Juchitlin, Ubero, alt. 30-90 m., June 1987, 
Llewelyn Williams 9486; Oaxaca, District of Juchitlin, Ubero, alt. 
30-90 m., May, 1937, Llewelyn Williams 9236; Oaxaca, District of 
Tuxtepec, San José Chiltepec, long. 96°08’, lat. 18°00’, alt. 100 m., 
April 28, 1939, Schultes & Reko 692. 
Although it is a very widespread genus in Central 
America, Ochroma has apparently only recently been 
collected in southeastern Mexico. In his Trees and shrubs 
of Mexico (Contrib. U.S. Nat. Herb. 28 (1926) 1674), 
Standley stated: ‘‘No specimens of Ochroma from Mexico 
have been seen by the writer, but O. Lagopus Swartz (= 
O. pyramidale (Cay.) Urban) has been reported from Ta- 
basco. This species is a West Indian one, but it seems 
probable that one of those described recently by Rowlee 
occurs in southern Mexico.’’ Later, he wrote (in Field 
Mus. Nat. Hist. Bot. Ser. 18 (1987) 682): ‘‘The Costa 
Rican trees were referred formerly to O. Lagopus Swartz 
of the West Indies, which probably does not extend to 
the continent. ”’ 
In 1908, Conzatti (Los généros vegetales mexicanos 
(1903) 20) reported that Ochroma Lagopus existed in 
the southern part of Mexico. He did not, however, cite 
specimens. In 1909, Rovirosa (Pteridografia del sur de 
Livy 7 
