across, smelling like rancid butter. In caatinga.’’ December 27, 1947, 
Richard Evans Schultes & Francisco Lopez 9520. 
Clusia Lopezii Maguire sp. nov., sect. Pachyste- 
mon Engler, subsect. Retinostemon Planchon & 
Triana. 
Epiphytica; ramis tenuibus; petiolis 1.5—2 em. longis, 
tenuibus, laminis 6-10 ecm. longis, 38.5—-5 cm. latis, ob- 
lanceolatis, rotundatis, chartaceis, in petiolum acutum 
angustatis, costa ad apicem extensa, nervis lateralibus, 
prominulis; inflorescentia masculina nutanti, trichotoma, 
5-6 cm. longa, 7—9 flora; sepalis 10, 2-jugis, exterioribus 
late rotundatis, 8 mm. vel minus longis, interioribus 10 
mm. longis, imbricatis, reniformi-orbicularibus vel ob- 
longo-orbicularibus, petaloideis, scarioso-marginatis ; pe- 
talis maturis reflexis, 3-4 mm. longis, 4-5 mm. latis; 
staminibus marginalibus 4—6 serialibus, fertilibus, interi- 
oribus sterilibus, antheris 2-locularibus, thecis terminali- 
bus tangentaliter dehiscentibus; ovario abortivo, in pro- 
funde excavatum deposito; floribus masculinis non visis. 
No immediate relatives of Clusia Lopez are as yet 
recognized. It is temporarily best assigned to the ill- 
defined subsect. Retinostemon. 
This interesting and handsome species is named for 
the late Francisco Lépez, field assistant of Dr. Schultes. 
Cotoms1A: Comisaria del Vaupés, Rio Negro, at confluence of Rios 
Guainia and Casiquiare, Cafio Ducuruapo (Igarapé Rana). ‘“Epiphyte 
with white flowers ; in caatinga.’’ December 13-17, 1947, R. E. Schultes 
& F. Lopes 9388 (Type in Herb. N.Y. Bot. Gard.).—Comisaria del 
Vaupés, Rio Negro, vicinity of Piedra del Cocui. ‘* Flowers white,’’ 
December 27, 1947, Schultes & Lopez 9473. 
Clusia microstemon Planchon & Triana in Ann. 
Sci. Nat. sér. 4, 183 (1860) 331, sect. Phloianthera 
Planchon & Triana. 
Schultes 3975 greatly extends the known range of 
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