1 ft. or more high, much branched; branchlets divergently ascending, minutely subtomentose; leaves 3-nate, erectly imbricate to adpressed and shorter than the internodes, 1–2 1/4 lin. long, linear, acute, glabrous; flowers axillary and terminal, 1–5 together, subsessile; calyx (excluding the larger lobe which is variably connate with the others or free almost to the base) 1/3– 1/2 lin. long, shorter than the corolla-tube, glabrous; lobes ovate or deltoid-ovate, acute or subobtuse or the larger one acuminate, minutely ciliate; corolla 1/2– 3/4 lin. long, campanulate or cup-shaped, with incurved lobes, glabrous; stamens 8; filaments of the long-styled form less than half as long as the 1/2 lin. long anthers, and of the short-styled form half as long as the 1/3 lin. long anthers, varying from shortly connate at their base to almost up to (but not with) the base of the anthers, becoming more or less separated in fruit; anthers oblong, usually very minutely scabrid on the apical notch, not glandular as originally described; ovary very minutely scabrid-puberulous on the ridges of the upper part, 2–3-celled; style very short or distinct and up to 1/6 lin. long, stigma funnel-shaped, with the erect sides of the cup, about 1/3 of its diam., glabrous or nearly so; fruit usually distinctly trigonous, with the 3 angles or ridges on the upper part subacute, slightly but not prominently reticulate on the lower part. null
