Preuderanthemum ellipticum Turrill, Kew Bull. 1920: 69. 1920. Two cotypes are cited by Turrill, one collected in lanes and paths between coffee planta- tions at Fusagasugá, Department of Cundinamarca, Colombia, April, by Mrs. J. A. Tracey, the other in forest shade at Arizal, 1,700 meters altitude, May, by Kalbreyer. The epithet ellipticum, elliptic, alludes to the shape of the leaf blades. Erect herbs 0.5 to 1 m. high or more; upper portion of the stem sub- quadrangular, rather densely hirsute, the hairs about 0.25 mm. long and more or less appressed, the lower portion of the stem terete and glabrous; leaves 8 or more, borne on the upper portion of the stem, the blades elliptic or elliptic-oblanceolate, up to 8 cm. long and 2.5 cm. wide, acuminate, the tips curved and blunt, narrowed at base and de- current on the petiole, glabrous above, the costa and lateral nerves barely conspicuous, the cystoliths conspicuous under a lens, the lower surface glabrous except the costa and veins, these rather sparingly puberulous and conspicuous, the tertiary veins coarsely reticulate, the oystoliths less conspicuous than above; petioles up to 1 cm. long, channeled, puberulous; flowers several, crowded in clusters in a nar- row terminal raceme up to 16 cm. long, the rachis and peduncle (about 6 cm. long) rather densely hirsute, the hairs barely 0.5 mm. long, loosely appressed or ascending, the first internode 1.5 cm. long, the others suc- cessively shorter, the lowermost pair of bracts borne at about the mid- dle of the peduncle, linear-subulate, 6.5 mm. long, about 1 mm. wide at base, carinate, the keel and margins sparingly ciliate, the bracts sub- tending the flower clusters similar but smaller, 3 to 4 mm. long; bractlets subulate, 1.5 mm. long, ciliate; pedicels up to 2 mm. long, glandular-puberulous; calyx glandular-puberulous, the hairs spread- ing, up to 0.25 mm. long, the calyx tube about 1 mm. long, the segments lance-linear, acute, 6 to 7 mm. long, obscurely nerved; corolla white, about 2 cm. long, puberulous, the hairs spreading, up to 0.25 mm. long, the tube about 12 mm. long, slightly curved, 1.5 mm. broad at base, 2.5 mm. broad at throat, the upper portion slightly ampliate, the lobes ovate, subequal, rounded, about 6.5 mm. long and 3 to 4.5 mm. wide; stamens inserted at about the middle of the tube, the filaments 1.5 mm. long, the anthers about 2 mm. long, the lobes minutely apiculate at base; staminodes subulate, 0.5 mm. long; ovary about 2 mm. long, glabrous, the style about 1 cm. long, the lower portion minutely hir- sute; mature capsules not seen. The specimens cited were collected at altitudes from 1,100 to 2,300 meters. CALDAS: Tabeja, west of Armenia, Pennell, Killip, & Hazen 8630. (GH, NY). CUNDINAMARCA: Albán, Guevara-Amôrtegui 267 (US). Forest above Fusa- gasuga, Pennell 2700 (GH, NY, US). Between the quebradas of La Marfa and La Victoria, Sasaima, vicinity of San Bernardo, García-Barriga 12589 (US). Wooded border of Laguna de Pedro Palo, Municipio de Tena, Uribe-Uribe 1754 (US).