Mexico: Oaxaca, District of Choapam, San Juan Teotalcingo, long. 
95°51’, lat. 17°18’, March 25, 1919, Reko 4150; District of Choapam, 
San Juan Lalana, long. 95°45’, lat. 17°25’, alt. 700 m., May 9, 1939, 
Schultes & Reko 835, 
This small, bright yellow root-parasite is apparently 
very local and has been collected in Mexico only twice, 
both times in the District of Choapam. Indeed San Juan 
Teotalcingo and San Juan Lalana are almost adjacent 
towns. 
Schultes & Reko 835 occurred on the same roots with 
the parasitic Apteria aphylla (Nutt.) Barnh. of the Bur- 
manniaceae (Schultes & Reko 834) which, like Letphaimos 
aphylla, has not been collected in any other section of 
Mexico. 
There is one other species of Le:phaimos in Mexico— 
L. parasitica Cham. & Schlecht. This is represented in 
the United States National Herbarium by two collec- 
tions, one from Vera Cruz, the other from Quintana Roo. 
APOCYNACEAE 
Prestonia guatemalensis Woodson in Ann. Mo. 
Bot. Gard. 23 (1986) 339. 
Mexico: Oaxaca, District of Choapam, Monte Negro de Lalana, 
long. 95°55’, lat. 17°35’, alt. 150 m., May 8, 1939, Schultes & Reko 
747 (Econ. Herb. Oakes Ames No. 7113). 
Hitherto, Prestonia guatemalensis has been known 
only from Guatemala. 
GESNERIACEAE 
Alloplectus strigosus (Oerst.) Hanstein in Lin- 
naea 34 (1865-66) 874. 
Mexico: Oaxaca, District of Choapam, in forests along Rio Chiqu- 
ito, near town of Rio Chiquito, long. 96°02’, lat. 17°40’, alt. about 
150 m., May 1, 1939, Schulltes & Reko 724. 
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