The two species E. placentaeflora and E. imbricata are often misidentified. More often than not E. placentaeflora is labelled as E. imbricata. This is understandable since some forms of the former species bear a very close resemblance to E. imbricata. The typical forms of the two species are distinct and easy to recognize. E. placentaeflora differs chiefly in having a globose-shaped corolla depressed in the middle and with the lobes tightly contracted round the stamens and a more lax habit. However, there are intermediate forms which are difficult to name and only a thorough field study of the two species will clear up the problems of identification.
Erect shrub up to 90 cm or so (3 ft). Branches somewhat twiggy, variously pubescent. Leaves 3-nate, 3-5 mm long, upright to spreading, imbricate, linear, sulcate, glabrous, usually tufted on short branchlets. Flowers 3-nate or clustered, terminal, calycine, copious in pseudoracemes along the branches; peduncles 3 mm long, puberulous, viscid; bracts approximate, rarely median, sepal-like. Sepals about 2-5 mm long, more or less ovate, keel-tipped, subscarious, rigid, sometimes ciliate, glabrous, white, brown, or red. Corolla 2-3.5 mm long, variable in shape from cyathiform, ovoid, urceolate to globose-urceolate, viscid, glabrous, white, brownish red, pink or red; lobes 1/2 as long as the tube, upright to spreading, more or less acute. Anthers exserted, about 1mm long, from terminal to nearly lateral, linear, oblong, lanceolate, semiovate or narrow-ovate, bipartite, glabrous, muticous, dark or light brown; pore 1/2-2/3 the length of the cell. Ovary oblong-cuneate, glabrous; style exserted; stigma clavate-capitate.