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BOTANICAL MUSEUM LEAFLETS 
HARVARD UNIVERSITY 
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CAMBRIDGE, MassaAcHUsETTS, JANUARY 25, 1946 VoL. 12, No. 4 
PLANTAE AUSTRO-AMERICANAE III * 
BY 
RicHarp Evans SCHULTES 
DE PLANTIS PRINCIPALITER COLOMBIAE ORIENTALIS 
OBSERVATIONES 
A NUMBER OF recently made collections, chiefly from 
eastern Colombia, represent hitherto undescribed con- 
cepts or range extensions. It appears advisable to present 
the following notes on the significance of these collec- 
tions as a contribution to our rapidly growing under- 
standing of the flora of the northwesternmost reaches of 
the Amazonian system. 
It is with pleasure that I acknowledge the interest of 
Dr. Lyman B. Smith of the Gray Herbarium in identi- 
fying the bromeliads which are enumerated and of Dr. 
Leon Croizat of the Arnold Arboretum for his determi- 
nations of the species of Mediocactus and Sapium which 
are discussed. 
The photographs were taken by the writer. 
BALANOPHORACEAE 
Helosis guyannensis L.C. Richard in Mém. Mus. 
Hist. Nat. Paris 8 (1822) 416, t. 20. 
This curious, red, fungus-like saprophyte, of rather 
wide occurrence in the Amazon Valley, has apparently 
* Plantae Austro-Americanae I and II were published in Caldasia 
6 (1943) 11-26 and 9 (1944) 325-336 respectively. 
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