A shrub 2 meters high or sometimes becoming subscandent and reaching 3 meters or more in length; stems subquadrangular, glabrous or bifariously and minutely strigose, the hairs up to 0.28 mm. long; leaf blades oblong-elliptic, up to 15 cm. long and 6 cm. wide, slenderly acuminate, cuneate at base, moderately firm, entire or undulate, hirtellous, the hairs rigid, subappressed or ascending, up to 0.2 mm. long, confined mostly to costa and lateral veins (about 10 pairs), the venation rather prominent; cystoliths minute, up to 0.32 mm. long, some of them punctiform; petioles rather slender, up to 10 cm. long and 1.25 mm. thick, glabrous beneath, the channels minutely strigose; panicles terminal and axillary forming large complex inflorescences up to 30 cm. long and 23 cm. broad, leafy, the ultimate bracts linear, up to 0.5 mm. long and 0.5 mm. wide, sparingly hirtellous, the hairs more or less spreading, about 0.08 mm. long; rachis and rachilla hirtellous, the hairs spreading, about 0.08 mm. long; pedicels up to 1.5 cm. long, hirtellous; calyx 6 to 8 mm. long, sparingly to moderately hirtellous, the hairs spreading, the acute ones up to 0.16 mm. long, septate, the glandular trichomes scattered, up to 0.5 mm. long, the calyx segments up to 7 mm. long, lanceolate, acute, 1.25 mm. wide near base; corolla rather sparingly pilose (the hairs more or less spreading, ca. 3 mm. long, septate), orange-red, paler distally, the tube 2.5 mm. broad at base, gradually enlarged to 8 mm. at throat, the upper lip erect, narrowly linear, 16 mm. long, 1 mm. wide at base, acute at tip, the lower lip spreading, ovate, conduplicate, 11 mm. long, 12 mm. wide at base, 3-lobed, the lobes oblong-ovate, about 4 mm. long, 1.75 mm. wide, obtuse at tip; stamens exserted 2 cm. beyond the mouth of the corolla tube, glabrous, the anthers 4.5 mm., long, 1.5 mm. broad, muticous at both ends; style slightly longer than the stamens, the stigma lobes rounded, very minute; ovary glabrous; capsules not seen. Type in the U. S. National Herbarium, No. 2045430, collected in temperate forest at Salitre, Taguaté Valley, 6 km. west of Gutiérrez and 45 km. south of Bogotá, Department of Cundinamarca, Colombia, 2,715 meters altitude, July 23, 1944, by Martin L. Grant (No. 9647). Isotype: US. Also of this species is F. R. Fosberg's No. 20901 (US), collected on a steep, densely wooded slope, where it was occasional, at Río del Nevado, east end of the Cordillera Las Cruces, south of Río Arroz across from El Capitolis, in the Sumapaz region, Intendencia of Meta, 2,675 meters altitude, August 27, 1943. The specific epithet alludes to the vinelike nature often attained by this species.