Small trees; branches subquadrangular toward tip, rather densely hirsute, the hairs sordid, 0.5 mm. long, closely upwardly appressed or more or less spreading, the lower portions of the stems terete, gla- brate; leaf blades oblong-elliptic, 19 to 35 cm. long, 7 to 17 cm. wide, acute to short-acuminate (the tip itself obtuse or acute), gradu- ally narrowed at base and briefly decurrent on the petiole, submem- branaceous, entire or undulate, the upper surface glabrous or the uppermost leaves bearing a few appressed or subappressed hairs 0.5 mm. long, drying olive, the costa and lateral veins (16 to 20 pairs) flat or slightly raised, scarcely conspicuous, the lower surface drying a lighter olive than the upper, sparingly hirsute, the hairs sordid, closely appressed or more or less spreading, the costa and lateral veins more conspicuous than above; petioles (unwinged portions) 1.5 to 7 cm. long, the pubescence that of the stems; flowers borne in a large terminal panicle consisting of rather small spikes, the panicle up to 30 cm. long with a spread of 20 cm., the spikes 3.5 to 9 cm. long and about 6 mm. broad, the secondary peduncles, if present, 1 to 1.5 cm. long, the pri- mary ones 4 to 7 cm. long, or the uppermost shorter, both peduncles and axis of the panicle rather densely hirsute, the hairs appressed or some of them more or less spreading, sordid, about 0.5 mm. long, the rachis sordid cottony-pubescent; bracts rhombic-ovate, 7 mm. long, 5.5 mm. wide, acute, coriaceous, yellow or orange, glabrous or the lowermost dorsally strigose, the straight upper margins ciliolate, the hairs up to 0.5 mm. long; ocelli as many as 4 but usually 2, minute, elliptical, 0.25 to 0.5 mm. long, opaque or varnished; bractlets lanceo- late, 7 mm, long, 2 mm. wide, carinate, densely brown-woolly dorsally, apiculate at tip; calyx 7.5 mm. long, the posterior segment narrowly ovate, 3 mm. wide, the anterior pair oblong-lanceolate, 2 mm. wide, the lateral pair lanceolate, 1.5 mm. wide, all acute to acutish, minutely ciliolate toward tip, striate-nerved; corolla red (tube) and orange (lobes), papillose-puberulous, 5.8 cm. long from base to tip of upper lip, the tube 3 mm, broad near base, narrowed to 1.5 mm. at 5 mm. above base, thence enlarged gradually to a slightly curved subventri- cose throat, 6 mm, broad at mouth, the upper lip erect, ovate, 15 mm.  cose throat, 6 mm, broad at mouth, the upper lip erect, ovate, 15 mm. long and 7 mm, wide, 2-lobed at tip, the lobes triangular, about 5 mm. long and 2 mm. wide at base, ending in slenderly acuminate recurved- spreading tips, the middle lobe of the lower lip oblong-elliptic, 17 mm. long and 5.5 mm. wide, the tip slender and recurved, the lateral lobes triangular, subobtuse, connate with the upper lip, their free portions, if any, about 1 mm. long and broad; stamens reaching the tip of the upper lip, the anthers 4.5 mm. long and 1 mm. broad, the basal lobe minutely mucronate, the filaments exserted about 1 cm. above the mouth of the corolla tube, glabrous; capsules not seen. Type in the U. S. National Herbarium, No. 1850294, collected on a north slope, between El Amparo and La Mesa at the source of the Río Negro, vicinity of Sarare, Department of Norte de Santander, Colombia, 1,400 to 1,700 meters altitude, November 7, 1941, by J. Cuatrecasas (No. 12873). Cuatrecasas' No. 12897 (US), collected between Campohermoso and the Río Negro, in the same general region as the type, 1,200 to 1,500 meters, November 8, 1941, and Schlim's No. 258 (NY), collected at Ocaña, Norte de Santander, also belong to this species. Aphelandra macrophylla is related to A. parvispica but has larger leaves and longer petioles, the leaf blades of the latter reaching only 19 cm. in length and the petioles 1 cm. As in A. parvispica, the flowers are borne in terminal panicles but these in A. parvispica are much smaller (up to 6 cm. long), as are the individual spikes (up to 6 cm. long). The tomentum of the rachis of A. macrophylla is brownish instead of white as in A. parvispica. The specific name is from the Greek, pakpós, large, and púxor, leaf.