minatis sessilibus 2.5-8 em. longis. Calycis laciniae late 
ovatae acutae ca. 1 mm. longae extus minutissime pap- 
illatae intus basi squamella truncate deltoidea praeditae. 
Corolla infundibuliformis lutea extus glabra vel indis- 
tincte papillata tubo laeviter arcuato-gibboso; tubo pro- 
prio ca. 83cm. longo basi ca. 2 mm. diam.; faucibus con- 
icis ca. 1.5 cm. longis, ostio ca. 1 cm. diam. ; lobis late 
dolabriformibus ca. 1.7 em. longis patulis. Antherae 
oblongo-ellipticae basi obtuse auriculatae ca. 6.5 mm. 
longae dorso glabrae. Ovarii carpella gemina oblongo- 
fusiformia ca. 2 mm. longa indistincte papillata basi nec- 
tariis 5 subquadratis carnosis cincta; stigmate pentagono- 
umbraculiformi longe apiculato ca. 4 mm. longo. Folli- 
culi graciles falecati apice saepe coaliti obscure monili- 
formes 8-10 cm. longi glabri. 
Mandevilla stephanotidifolia is closely related to M. 
Steyermarkii of the Roraima shield, which, however, has 
slenderer stems, thinner, cordate-ovate leaves, and a 
slenderer inflorescence. 
CotompiA: Comisaria del Vaupés, Rio Apaporis, Cachivera de Jiri- 
jirimo y alrededores. Altitude about 250 m., September 16, 1951. 
Richard Evans Schultes & Isidoro Cabrera 14010 (Tyrr in Mo. Bot. 
Gard. ).—Rio Apaporis, Raudal Jirijirimo, below mouth of Kananari. 
Altitude about 900 ft. January 21, 1952. Schultes § Cabrera 14952. 
—Rio Apaporis, Raudal de Jirijirimo, November 27, 1951. Schultes 
& Cabrera 14632.—Comisaria del Amazonas, Rio Caqueta, La Pedrera 
and vicinity, May 2, 1952. Schultes & Cabrera 16325. 
Mandevilla thevetiocides Woodson sp. nov. 
Frutex humilis; ramulis crassis Juventate ancipitibus 
minute puverulo-papillatis mox cortice atrorubescenti 
tectis. Folia decussata brevissime petiolata lineari-ellip- 
tica cum apice tum basi anguste acuta 4-8 cm. longa, 
5-10 mm. lata, coriacea margine revoluta venis secund- 
ariis multis horizontalibus supra illustria nervo medio 
pauciglanduligero subtus minutissime velutina; petiolo 
bun 
