Esterhuysen, E.E. = the foremost collector from the Cape mountains, who made Restionaceae her speciality. She collected actively from 1930 to 1990, and contributed more to our knowledge of the Cape flora than any other collector. Her meticulous collections, assembled to reflect the distribution range and morphological variability of each species, are currently housed at the Bolus Herbarium.
Vegetative parts: plants tufted, 0.3–1.3 m tall, basal diameter 0.1–0.4 m, crown diameter 0.3–0.5 m, compact, without spreading rhizomes or stolons. Fertile culms unbranched, round (not compressed), solid or with a small central cavity, smooth or finely rugulose, olivaceous, 0.3–1.3 m tall, diameter at base 1.2–2 mm, diameter at apex 1–1.5 mm. Clusters of sterile branches at the nodes of the fertile branches absent. Sheaths more than 1 per culm, dropping off, with an abscission line present, loosely convoluted or flat and standing free from culm, 15–25 mm long, margins entire, brown to golden, upper 1/3 in colour and texture similar to the lower 2/3, apical margins coriaceous, like the rest of the body, hyaline shoulders absent, apex, excluding the membranous lobes, acute. Sheath-mucro absent or penicellate, straight and erect, 1–2 mm long. Males: male inflorescence with 11–20 spikelets or 21–50 spikelets, paniculate, 80–150 mm long, 10–25 mm wide. Male inflorescence spathes persistent, taller than spikelets, chartaceous, Bright golden-brown colour. Male spathellae inconspicuous or absent. Male flowers in spikelets. Male spikelets erect on stiff pedicels or sessile, oblong or ovate, apex undifferentiated, 6–10 mm, 4–5 mm, with 8–20 flowers, pedicels absent ie spikelets sessile or shorter than the spikelets, terete or angular. Male bracts more than twice as tall as flowers, 8–10 mm long, linear or ovate, acuminate, margins entire, cartilaginous, bract upper margin membranous, thinner texture than the body, bract awn minute or absent, male bracts rather bristly. Male flower 2.5–4 mm long. Male tepals sepals and petals the same rigidity, cartilaginous, oblong or ovate, inner tepals longer than outer tepals (outer tepals ca. 1/3 the length of inner tepals). Male outer lateral tepals keeled or winged, glabrous. Anthers 1.5–2 mm long, included in the flowers. Pistillode present. Females: female inflorescence linear, 50–120 mm long, 5–15 mm wide, with 6–10 spikelets or 11–20 spikelets. Female spathes longer than the spikelets, not obscuring spikelet, persistent, chartaceous. Female spathellae inconspicuous or absent. Female spikelet sessile or pedicel simple, ovate, apex undifferentiated, 4–6 mm long, with 3–7 flowers, with 0 sterile bracts. Female bracts at least twice as long as flowers, erect, 8–13 mm long, linear or ovate, acuminate, cartilaginous, apical margin membranous, paler than body of bract, margins entire, awn minute or absent. Female flower 2.8–3.4 mm long, without a fleshy pedicel, six tepals. Female tepals bony or cartilaginous, glabrous and smooth, midrib flush with the tepal body, margins entire, apices acute, inner whorl longer than outer. Female outer lateral tepals conduplicate, hidden by bracts, or bracts are shorter than flowers, 1.5–2 mm long. Female odd outer tepal ovate, 1.5–2 mm long. Female inner tepals ovate, 2.5–3 mm long. Staminodes present. Styles feathery, 3. Style bases free. Ovary with 3 locules or 2 locules, dehiscent or capsules thinwalled, sometimes dropping with seed in. Fruit: seed (1.56–)1.69(–1.88) mm long, (0.88–)1.03(–1.12) mm in diameter, shape in side view elliptical, shape in diameter round in cross section, brown.