actually dealing with Castilla Ulei. The latex of this spe- 
cies is usually a pure white or, at the most, a light cream. 
That the color of the latex, in the concept which I have 
just described, is not due to soil or other site-factors is 
borne out by the facts that (1) there are numerous mor- 
phological characters which likewise differentiate forma 
lecithogalacta from typical Castilla Ulei; and (2) 1 en- 
countered this form in several rather widely separated 
localities, in each locality growing in association with in- 
dividuals of Castilla Ulei which yielded the usual white 
latex. 
The epithet which I have applied to the new form re- 
fers to the unusual color of the latex and is a rendition 
into Greek of the common name yema de huevo. 
Cotoms1a: Vaupés, Rio Vaupés near Puerto Naré, alt. 900 ft. Tree 
100 ft. tall, 2 ft. in diameter. Latex brilliantly yellow. Bark light 
ashy grey or almost white, smooth. Common name: yema de huevo. 
February 18, 1944, R. FE, Schultes 5798 (Tyrer in Econ. Herb. Oakes 
Ames). 
TRIURIDACEAE 
Triuris hyalina Miers in Proc. Linn. Soc. London 
1 (1841) 96. 
Schultes 6180 represents the first collection of a mem- 
ber of this rare family from Colombia and, apparently 
from the entire northwestern sector of South America. 
Cotoms1a: Amazonas, Rio Loretoyacu, Laguna Pichuna. Very small, 
white root-parasite. November, 1944, R. E. Schultes 6180. 
VELLOZIACEAE 
Vellozia phantasmagoria PF. 1. Schultes sp. nov. 
Frutex usque ad quattuor pedes altus. Caudex fibroso- 
lignosus, erectus, basi usque ad 8 cm. in diametro, in- 
divisus vel saepius bi- vel trifureatus, foliorum vaginis 
cinereo-stramineis persistentibus arcte adpressis, spiraliter 
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