being known as far southwest in the Amazon as Loreto 
in Peru. 
Cotomsia: Comisaria del Vaupés, Rio Negro, vicinity of Piedra del 
Cocui. ‘‘Small treelet, 15 feet. Flowers red or white with red stripes 
(on same inflorescence). On flood-bank.’’ December 27, 1947, Richard 
Evans Schultes & Francisco Lopez 9470. 
Conomorpha riparia FP. LE. Schultes sp. nov. 
Arbuscula parva, ramulis junioribus dense adpresso- 
ferrugineo-tomentellis, mox sordide fuscis, denique glab- 
rescentibus. Folia cum petiolis 10-20 mm. (sed plerum- 
que 15 mm.) longis, plusminusve 1 mm. crassis, valde 
striatis, densissime ferrugineo-tomentellis; lamina char- 
tacea, anguste lanceolata, paulo marginata, apice acuta 
vel aliquid subapiculata, statu adulto 8.5—-10 cm. longa, 
2.2-3.8 cm. lata, supra atroviridis et pilis stellatis albis 
minutissime obtecta et nervis haud conspicuis, subtus 
omnino sed praecipue nervum centralem versus magno- 
pere densissime atque molliter ferrugineo-stellato-pilosa. 
Inflorescentiae erectae vel suberectae, strictae, foliis mul- 
to breviores, 2-4 em. longae, densiflorae, usque ad basim 
florigerae, axi aliquid crassiusculo, sparse scabro-leproso. 
Flores subsessiles, patentes, plerumque 5 mm. longi, ore 
5-6 mm. in diametro, lutei, fragrantes. Sepala ad 4 con- 
nata, lobis triangularibus, acutis, 2.8 mm. longis, margine 
papillosis, extus glanduloso-pilosis. Petala media pro 
parte connata, lobis ovatis, apice obtusis, margine papil- 
losis, utrinque glandulosis. Stamina petalis breviora, fil- 
amentis crassissimis, usque ad 1.2 mm. longis, liberis, 
quam antheris bene recurvis, 0.6—0.7 mm. longis longi- 
oribus. Ovarium lageniforme, lepidotum, stylo cylindrico 
crasso, usque ad 1.8 mm. longo. 
Conomorpha riparia of the uppermost reaches of the 
Rio Negro resembles C. grandiflora Mez, a species known 
only from the middle Rio Negro between Barcellos and 
Tapurucuara., In addition to floral differences, the dense 
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