Erica viridiflora subsp. viridiflora, sometimes commonly called the coastal limegreen heath, is an erect, single-stemmed and much-branched shrub reaching heights around 90 cm. The branches are hairy, sometimes ageing into woody hairlessness.
The spreading leaves grow in whorls of three, sometimes hairy while the young leaves may have hairy margins. The ovate leaves with bluntly pointed tips are from 3 mm to 8 mm long.
The flowers grow in stem-tip clusters of three. The nodding or drooping flowers have hairy pedicels of 3 mm to 5 mm long. Keel-tipped bracts of 4 mm long are positioned close behind the calyces. The also keel-tipped sepals are ovate, up to 10 mm long and clasping the base of the corolla, resembling the bracts and in picture brown.
The cylindrical corollas are hairless, slightly sticky and slightly curved, about four times as long as the calyces. They are lime green or creamy yellow, up to 26 mm long. The stamens are included in the tube, but the style is sometimes exserted. The anthers are tailed. Flowering happens in spring.
The subspecies distribution is in the Western Cape in the coastal mountain ranges from George to the Eastern Cape, as far as Humansdorp. The habitat is rocky outcrops on moist fynbos mountain slopes. The subspecies is not considered to be threatened in its habitat early in the twenty first century (Vlok and Schutte-Vlok, 2015; Baker and Oliver, 1967; iNaturalist; http://redlist.sanbi.org).