M. panamensis Standl. Hemiepiphytic shrub, often associated with ant nests; smaller stems fleshy, sometimes arising from a large, swollen, tuberous stem perched in the crotch of a tree, with only a slender root trailing to the ground; stems and leaves glabrous. Leaves alternate or subopposite with the pairs equal or unequal; petioles less than 1 cm long; blades obovate to broadly elliptic, acuminate, acute to rounded at base, 6-20 cm long, 3-8.5 cm wide, coriaceous. Panicles short, axillary, cymose; peduncles stout, to ca 7 cm long; pedicels 10-14 mm long; flowers 5-parted, ca 1.3 cm long; calyx deeply divided, the lobes oblong-ovate, curved inward, to ca 7 mm long, persisting in fruit; corolla campanulate, to 14 mm long, greenish-yellow, densely pubescent outside with very short glandular trichomes, some tinged with purple, the lobes broadly rounded, imbricate, 3-4 mm long; stamens included; filaments fused to tube two-thirds their length; anthers yellow, ca 4 mm long, with longitudinal dehiscence from apex, the connective purplish; ovary yellow; style included, nearly equaling lobes, club-shaped at apex. Berries ovoid, glabrous, smooth, yellow becoming white and fleshy at maturity, 1-1.5 cm long; seeds light brown, ca 2.7 mm long, curved, thicker at one end. Croat 8911. Occasional, occurring from within a few feet above the ground to more than 30 m high. Flowers and fruits throughout the year. Flowering may be heaviest during the middle of the dry season. The fruits probably develop in about a month. Central Panama to Peru. In Panama, known from tropical moist forest in the Canal Zone, Panama, and Darien and from tropical wet and premontane rain forests in Colón.