to be the first reported from the Amazon watershed of 
the Republic. 
CotomsrA: Intendencia del Amazonas, Rio Loretoyacu, floating on 
the river near its mouth, April, 1944, Frederick J. Hermann 11301. 
LEMNACEAE 
Lemna valdiviana Philippi in Linnaea 33 (1864) 
239. 
The collections cited below seem to be the first of this 
minute floating plant from the Amazon watershed of 
Colombia and adjacent Peru. 
Cotompia: Intendencia del Amazonas, Rio Hamacayacu, April, 
1944, Frederick J. Hermann 11312. 
Peru: Departamento de Loreto, Rio Amazonas, Isla Cacao, April, 
1944, Frederick J. Hermann 11313. 
Spirodela polyrrhiza (L.) Schleiden in Linnaea 18 
(1839) 392. 
This interesting little aquatic plant has apparently 
never before been collected in the Colombian Amazon 
watershed. It has been known from Boyacé and Santa 
Marta in Colombia and from Guayas Province in Ecua- 
dor and Loreto in Peru. 
Cotompia: Intendencia del Amazonas, Leticia, April, 1944, Fred- 
erick J. Hermann 113165. 
VELLOZIACEAE 
Vellozia phantasmagoria PR. I. Schultes in Bot. 
Mus. Leafl. Harvard Univ. 12 (1946) 130, pl. 19, 20. 
A specimen of Cuatrecasas 7700 has recently come to 
my attention during studies in the United States National 
Herbarium. It would appear to represent Vellozia phan- 
tasmagoria, a dominant shrub on Mount Chiribiquete 
which is located slightly southeast of San José del 
Guaviare and which has a number of floral elements in 
common with the granitic hill at San José. The sterile 
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