Shrub to 3 m tall;  bark fissured, densely glandular-hispid or glabrous, gray and brown;  twigs subterete, brownish-gray to black, glandular-hispid (tomentose).  Leaves coriaceous, flat or slightly revolute, elliptic to widely elliptic, 2.7-4.6 x 1.4-2.7 cm, base cuneate, obtuse, or truncate, apex obtuse, bluntly mucronate, margin entire, adaxial surfaces sparsely hispid, abaxial surfaces tomentose, usually glandular-hispid especially along midvein (glabrous);  petiole semiterete, flattened abaxially, 3.5-6 mm long, glandular-hispid (tomentose or glabrous).  Inflorescence terminal, axillary, or both, racemose, 9-13-flowered;  rachis 3-15 cm long, 1.4-2.8 mm in diam., orange to brown, densely glandular-hispid, often tomentose (glabrous);  pedicel ascending, 13-46 mm long, 0.5-1 mm in diam., glandular-hispid or tomentose (glabrous);  bracteoles inserted on basal 1/2 of pedicel, narrowly ovate or oblong, flat or slightly involute, 1.3-4.7 x 0.4-1 mm, apex acute to acuminate, margin glandular-ciliate, both surfaces glandular-hispid or tomentose (glabrous);  floral bracts narrowly ovate to ovate, flat or revolute, 6.7-7(-30) x 1.2-2.8 mm, base cuneate or obtuse, apex acute to obtuse, margin entire, both surfaces glandular-hispid, sometimes tomentose (glabrous).  Flowers 7(-8)-merous;  calyx 4.9-5.8 mm long;  tube 1.9-3.1 mm long, 4-6.4 mm in diam., brown, sometimes with maroon edges, glandular-hispid;  lobes ovate to widely ovate or triangular, apex acute to obtuse, 1.8-3.9 x 1.8-3.9, longest lobe 2.8-3.9 mm long, margin entire or glandular-ciliate (ciliolate), abaxial surface glandular-hispid or tomentose;  corolla infundibular, white, pink, dark magenta, or purple, petals spatulate, 30-39 x 8-13 mm, margin undulate, distally slightly tomentose;  stamens included or subequal to corolla, 26-41 mm long;  filaments tomentose;  anther 2.3-3.5 mm long, 1-1.4 mm broad, glabrous;  ovary glabrous;  style slightly to long exserted, 33-46 mm long;  stigma capitate or slightly lobed.  Capsules depressed obovoid, 5-6 mm long, 9-10 mm in diam., brown, exocarp not separating from the valves;  seeds 1.1-1.9 mm long, 0.3-0.4 mm in diam.

    Distribution.  Endemic to the open shrublands of Amazonas, Peru, at elevations of 1500-3000 m.  It flowers from August to March and bears fruit from February to March.

    Local names:  matamoscas, mupa sacha (Amazonas).