EXPLANATION OF THE ILLUSTRATIONS 
Prare XXVIII. Pauttinia Yoco Schultes & Killip. 
Upper figure, basal portion of a stem of the liana 
showing the milky sap exuding from the wound. 
Puerto Porvenir, on the Rio Putumayo near the 
mouth of the Rio San Miguel, Comisaria del Putu- 
mayo, Colombia, July 1942. (Photograph of the 
type: Schultes 4028.)—Lower figure, pieces of the 
stem. Santa Rosa, on the upper Rio San Miguel, 
Comisaria del Putumayo, Colombia, April 1942. 
Prare XXIX. Pautiinta Yooo Schultes §& Killip. 
Upper figure, a Kofan Indian preparing yoco: rasp- 
ing the epidermis, cortex and phloem. Puerto Por- 
venir, on the Rio Putumayo near the mouth of the 
Rio San Miguel, Comisaria del Putumayo, Colom- 
bia, July 1942. 
preparing yoco: expressing the milky sap of the 
Lower figure, a Kofan Indian 
rasped material. Puerto Conejo, on the upper Rio 
San Miguel, Comisaria del Putumayo, Colombia, 
April 1942. 
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