Clusia microstemon and registers the species from Colom- 
bia. It is closely related to Clusia Gaudichaudi. 
Brazit: ‘‘Prope Panuré|[Ipanoré] ad Rio Uaupés,’’? October 1852- 
January 1853, Spruce 2511 (Tyrer) (Dupticare type in Herb. N.Y. 
Bot. Gard.). 
Cotomp1a: Comisaria del Amazonas, Rio Igaraparand, los alrede- 
dores de La Chorrera, alt. about 180 m. “‘Large strangler without 
latex ; flowers large; petals white, red towards centre; centre of flower 
deep yellow; flower saucer-shaped.’’ June 4-10, 1942, R.E.Schultes 
39765. 
Clusia opaca Maguire sp. nov., sect. Criuva Ben- 
tham & Hooker, subsect. Eucriuva Engler. 
Arbor parva; ramulis tenuibus, 3-4 mm. diam., in- 
ternodiis 1-8 em. longis; foliis dense chartaceis, petiolis 
10-12 em. longis, tenuibus, laminis oblongis vel oblongo- 
oblanceolatis, 7-9 cm. longis, 2.5-8.5 cm. latis, valde 
revolutis, apice obtuso, basi obtusa, costa supra prominula, 
subtus prominenti, nervis lateralibus a costa angulo circa 
20° abeuntibus, supra prominulis, subtus prominentibus ; 
inflorescentia solitaria, terminalis, compacta, multiflora, 
1.5-2 em. longa vel saepe nonnullis subterminalibus, 
axillaribus, bracteolis minutis, late orbicularibus; floribus 
masculinis subsessilibus, cum jugo parvis, carinatis, brac- 
teolis appropinque subtentis; sepalis 4-5, exterioribus 
decussatis, 3-4 mm. longis, orbiculari-obovatis, crassis- 
simis, interioribus 2 vel 8, ca. 4 mm. longis, orbiculari- 
bus, fere concavis; stamini extrorsis, numerosis, inae- 
qualiter 4—5 seriatis, filamentis in annulum 1—1.5 mm. 
altum connatis, receptaculo apice concavo, glabro, non- 
glutinoso, filamentis exterioribus ca. 0.2—0.3 mm. longis, 
interioribus 0.5-0.7 mm. longis, antheris 0.7—1 mm. 
longis, oblongis, obtusis, inappendiculatis, pinguibus, 
incurvatis, lateraliter dehiscentibus; floribus foemineis 
non visis. 
Clusia opaca appears to be associated with those spe- 
cies which centre around the south Brazilian C. Cambes- 
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