alia, 8-18X1.5-8 mm., subsessilia, obtusa, marginata, 
nervo centrali fusco utrinque conspicuo, subtus cum pilis 
sparsis sed ceterum glabro. Flores alterni vel decussati, 
inter tolia. Pedunculi 2-4.5 mm. longi, apicem versus 
bibracteolati. Bracteolae crassae, ovatae vel oblongae. 
Calyx 4.5-5.5 mm. longus, fauce dilatatus, caleare incur- 
vato, lobulis triangulari-acuminatis, brevissime ciliatis, 
appendicibus crassis, quam lobulis brevioribus, dense 
adpresso-malpighiaceo-pubescentibus et hispido-fusco- 
glandulosis in parte mediana inferiore ; intus dense pubes- 
cens. Petala sex, alba et purpureo-striata, obovato-sub- 
spathulata, 2.5-2.61.5-1.75 mm., obtusa. Stamina 11, 
inclusa, duo dorsalia brevissima, alia paulo majora, horum 
tria ventralia glabra, cetera lanosa. Pistillum inclusum, 
plusminusve 8 mm. longum. Ovarium dense pilosum, 
semiovoideum, in stylum pilosum attenuatum. Stigma 
capitatum, Ovula 5-6. Discus crassus, deflexus, compla- 
nato-ovoideus. Semina parva, 1—1.5 m., suborbicularia, 
plano-convexa, minutissime foveolata, caruncula con- 
spicua. 
Cuphea stygialis grows in dense carpets along the very 
edge of the great waterfall, where it is constantly under 
a spray of moisture. 
The specific epithet stygialis has been chosen because, 
according to Dr. Schultes, the Raudal de Jirijirimo is 
a sacred place to the Indians of the Rio Apaporis, who 
believe that it is the home of the dead leaders of their 
tribes. 
Cotomura: Comisarias Amazonas-Vaupés, Rio Apaporis, Raudal de 
Jirijirimo (below mouth of Rio Kananari). Quartzite base. Alt. about 
900 feet. February 14, 1952, Richard Evans Schultes & Isidoro Cabrera 
15330 (Typr in Herb. Gray). 
Cuphea philombria Lourteig sp. nov. 
Frutex plusminusve 50 cm. altus, pilis setosis malpighi- 
aceisque obtectus. Radices fibrosae, profuse ramificatae, 
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