Gaultheria stereophylla A. C. Smith, Contr. U.S. Natl. Herb. 29: 342.  1950. Gaultheria serrulata Danguy & Chermezon, Bull. Mus. Hist. Nat. Paris 28: 435.  1922 non Herzog (1915).  Type.  Ecuador.  Azuay:  Niarihuiña, 3900 m, Dec 1904 (fl, immature fr), Rivet 739 (holotype, P, photo F neg. 36924, frag. NY).

         Erect shrub;  mature stems subterete, glabrate;  bark grayish-brown, cracking longitudinally;  twigs terete to subterete, striate, densely puberulent, scattered strigose;  buds ovate, the numerous scales ciliate, otherwise glabrous.  Leaves apparently thick-coriaceous, somewhat concave, elliptic to oblong-elliptic, 1.3-2 x 0.7-1.1 cm, base rounded, apex rounded or obtuse and short-callose-mucronate, margin thickened and flat to recurved, conspicuously serrate, glabrous on both surfaces;  midrib, lateral nerves (2-3 per side), and reticulate veinlets conspicuously impressed above, midrib and lateral nerves slightly raised but obscure beneath;  petiole subterete, flat and canaliculate above, rugose 2-3 mm long, glabrous to weakly puberulent.  Inflorescence axillary, flowers solitary;  pedicels terete, 9-13 mm long, densely puberulent, rarely also with 1 or 2 glandular-setose hairs;  bracteoles ca. 4-6, mostly borned near base of pedicel, caducous, not obscuring pedicel, membranous, ± clasping, oblong-ovate, obtuse, concave, to 5 x 3 mm, glabrous on lamina but ciliolate;  floral bract similar to bracteoles but smaller, ca. 1.5 x 1.5 mm. Flowers with calyx 5-7 mm long, lobes ovate to oblong-ovate, 4-5 x 2.5-3 mm, long-acuminate, basically glabrous or densely puberulent at tips, ciliolate;  corolla urceolate, 5-angled when fresh, strongly constricted at throat, 8-10 x 6 mm, glabrous within and without, red, lobes ovate, obtuse;  stamens ca. 4.5 mm long;  filaments 3 mm long, sparsely pilose;  anthers ca. 2 mm long, awns short but noticeable;  ovary densely short-pilose;  style 3-4 mm long, pilose.  Fruiting calyx not seen but at least 6-8 mm diam.

         Distribution (Map).  Known only from the type collection from 3900 m elev.  Flowering in Dec.  Rare and endangered.