Justicia interrupta H. B. K. Nov. Gen. & Sp. 2: 232, 1817. Type collected near Santa Ana, Colombia, by Humboldt. Thyrsacanthus interruptus Nees in DC. Prodr. 11: 326. 1847. Based on Justicia interrupta H. B. K. Odontonema interruptum Kuntze, Rev. Gen. Pl. 2: 484. 1891. Shrub; branches terete, smooth, bearing scattered minute appressed hairs; leaf blades oblong, acuminate (the tip itself obtuse), narrowed at base, the upper surface blackish green, the lower pale, both sur- faces reticulately veined, nitid, glabrous except the costa, this strigose- hirsute; petioles 4 to 6 mm. long, pubescent; racemes terminal, pedun- culate, 7.5 to 10 cm. long; peduncles hirsute; flowers solitary, short- pedicelled, opposite, distant; bracts linear, hirsute, longer than the pedicels; calyx hirsute, the segments linear, equal; corolla 2-lipped, the upper lip 2-lobed, the lower 3-parted; stamens included, the anthers oblong, the locules approximate, parallel. No specimens seen. The description is drawn from the original and that of Nees. The included stamens and small size of the corolla indicate a possibility that this may be a Pseuderanthemum. A photograph of Humboldt's specimen in the Berlin Herbarium is in the U. S. National Herbarium (Field Mus. No. 9515); this shows that the leaf blades are 5-7 cm. long and 2-2.6 cm. wide, and that the corollas are about 1.6 cm. long, measurements somewhat larger than those given by Nees.