glutinosum 4-5 mm. altum connatis; ovario 5-6 locu- 
lari, loculis multiovulatis; fructu ca. 5 cm. longo, late 
oblongo-elliptico; stigmatibus 2-3 mm. longis, triangu- 
laribus, conniventibus, sessilibus; seminibus oblongo- 
ellipticis, ca. 8 mm. longis, 6 mm. latis, aliquantum 
compressis, pallidis. 
This beautiful species may possibly be restricted to 
Cerro Chiribiquete, an isolated quartzitic mountain 
which has yielded a number of endemic plants. It is 
most closely related to Clusia viscida Engler, a species 
of the same general region, but which has relatively nar- 
row oblanceolate leaves and anthers which are provided 
with a distinct cusp or awn. 
CotomsiA: Comisaria del Vaupés, Cerro Chiribiquete, Rio Macaya. 
*“*Shrub.’’? January 1944, G. Gutiérrez & R. E. Schultes 677 (Tyre in 
Herb. N.Y. Bot. Gard.).—Comisaria del Vaupés, Cerro Chiribiquete, 
Rio Macaya. ‘““Bush 7-8 feet tall.’? January 1944, G. Gutiérrez & RE. 
Schultes 679(Cotyrr in Herb. N.Y. Bot. Gard. ). —Comisaria del Vaupés 
Cerro Chiribiquete, Macaya River, Upper Apaporis Basin. ““Large 
scraggly bush 10 feet high; latex yellow, sticky; flowers white; sepals 
red-purple; xerophytic savanna on sandstone, 400-1200 feet above 
forest floor, 1300-2100 feet above sea-level.’’ May 15-16, 1943, R.E. 
Schultes 5478 [in fruit] (Tororyrr).—Same locality, July 24, 1943, 
R. E. Schultes 5623 (Tororyrr). 
Clusia columnaris Mngler ex Martius in F1. Bras. 
12, pt. 1 (1888) 432, sect. Pachystemon Engler, sub- 
sect. Omphalanthera Planchon & Triana. 
This species had apparently not been collected since 
the original specimens were obtained by Spruce in the 
middle of the last century. The abundant material now 
at hand, from the region of the upper Rio Negro and 
upper Orinoco in Brazil, Colombia and Venezuela, shows 
that the species is perhaps one of the most common river- 
ine Clusias of the area. It is a well-marked, though vari- 
able, species. 
Pistillate material which was unknown to Engler may 
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