Herb to 18 cm high; the stems orange to purplish-yellow, 1 to several, fastigiately branched at the base, erect, simple or few-branched, slender, terete, glabrous. Scales membranous,-+-hyaline, the opposite cauline scales connate for ca. 1/6-1/2 their length, the cauline scales narrowly ovate, acuminate-subulate at the apex, to 6 mm long and ca. 2 mm wide, much shorter than the internodes, the basal scales much shorter. Inflorescences dichasial, loose, to 7-flowered. Flowers 5-merous, the pedicels 2-8 mm long; calyx colorless, campanulate, 5-6 mm long, the lobes narrowly triangular, long-acuminate-subulate at the apex, about as long as the tube, the sinuses rotund; corolla orange or yellow, 15-20 mm long, the tube cylindric, scarcely dilated at the throat, 12-16 mm long, ca. 1-1.5 mm in diameter, villosulous towards the apex but below the insertion of the stamens within, the lobes spreading, narrowly ovate, acute to abruptly acute apically, 3-4 mm long; stamens inserted somewhat below the throat of the corolla tube, the filaments short, to 1 mm long, the anthers scarcely coherent, oblong, ca. 1 mm long, the thecae shortly apiculate-appendaged at the base, the append-ages ca. 0.5 mm long; gynoecium 10-14 mm long, eglandular, the style slender, 5-7 mm long, the stigma capitate, minutely tuberculate, ca. 1 mm in diameter. Capsule narrowly oblong, acute apically, to 8 mm long, completely dehiscent; seeds wingless.
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Herbs 10-25 cm tall; roots branched, coral-shaped; stems orange to salmon, variously branched. Leaves narrowly ovate, 3-10 mm long. Inflorescence a cyme consisting of several dichasia, to 30-flowered, sometimes reduced to 1 or 2 flowers. Flowers 5-merous, fragrant; calyx campanulate, 5-9 mm long, tube 2-3 mm long, lobes narrowly triangular to subulate, 2-6 mm long, sinuses obtuse; corolla yellow to orange, trumpet-shaped, 15-25 mm long, tube 10-20 mm long, inner side hairy below insertion of stamens, lobes ovate to obovate or narrowly so, 2-10 mm long; stamens inserted 2-3 mm below throat, filaments 0.5-1 mm long, anthers 0.5-1 mm long, free, apex rounded-truncate; ovary narrowly oblong-ellipsoid, 3-5 mm long, glandular marks sometimes visible, style 7-15 mm long. Capsule oblong-ellipsoid, 6-8 mm long, septicidally dehiscent from base to apex; seeds irregularly saccate, 0.2-0.3 mm long.