Matisia apaporiensis is closely related to M. putumay- 
ensis Cuatr., but differs from it in its thinner, more cu- 
neate leaves, in its tomentose petioles, in its few stellate 
hairs scattered on the leat-blades, in its broader, thinner 
‘alyx, in its larger petals and androecium, and in the 
softer indument of its calyx. In Matisia putumayensis, 
the calyx is ferrugineous, minutely granulate and covered 
with a shorter and denser velutinous tomentum. Similar 
characters differentiate the new species from the related 
Matisia lasiocalyax, in which the petioles are more or less 
pubescent, and the calyx is not granulate on its main 
surface. 
Cotombia: Comisaria del Amazonas, Rio Ricapuya (tributary of the 
Rio Apaporis below mouth of Rio Piraparana). Alt. about 700 feet. 
General location: Lat. 0°25/ 8, Long. 70°30! W. “*Bush. Flowers 
yellow, Makti = b0-0-tag; Makuna = mee-cheé-ge-hai; Puinave = do-kin,”* 
September 1952, Richard Evans Schultes & Isidoro Cabrera 17641 (Ty rr 
in Herb. Gray). 
Matisia Idroboi Cuatrecasas in Phytol. 4 (1954) 
476. 
It has been thought advisable to publish the accom- 
panying plate of the type plant of this remarkable spe- 
cies of Matisia. 
CotomBia: Intendencia del Meta, Cordillera La Macarena (extremo 
nordeste), Macizo Renjifo, cumbre y alrededores. Alt. 1860-1900 m, 
January 1951, Jess M. Idrobo & Richard Evans Schultes 1001, 
STERCULIACEAE 
Herrania umbratica PR. 1’. Schu/tes in Caldasia 2 
(1943) 261, t. p. 268. 
In 1943, | described Herrania umbratica trom a fruit- 
ing collection made by Senor Jorge Ortiz Méndez in the 
Municipio de Girén in the Departamento de Santander, 
Colombia. Flowers were not available, and, for this rea- 
son, the exact relationship of this concept has been doubt- 
ful. The gross morphology of the capsule suggested a 
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