Nuweberg = one of the names for the mountains between Elgin and Jonkershoek, largely based on the name of the forest station on the inland slopes of the mountains. It is the type locality of the species.
WCM Protologue Reference:
Esterh., Bothalia 15: 453 (1985)
Vegetative parts: plants tufted, 0.3–0.45 m tall, basal diameter 0.01–0.05 m, crown diameter 0.1–0.2 m, compact, without spreading rhizomes or stolons. Fertile culms unbranched or sparingly branched, smooth or finely warty, olivaceous, 0.3–0.45 m tall, diameter at base 0.5–1 mm, diameter at apex 0.4–0.7 mm. Sheaths closely convoluted, 7–20 mm long, olivaceous to pale brown, upper 1/3 in colour and texture abruptly different from the base, and soon decaying (upper quater, more membranous and soon dropping), apical margins narrowly membranous, hyaline shoulders tall, acute (more rounded, similar to R. nodosus), hyaline shoulder 0.2–0.4 of sheath body length, apex, excluding the membranous lobes, obtuse or truncate. Sheath-mucro penicellate, straight and erect, 1–2 mm long, upper quater of the sheaths pale, chartaceous to membranous: this includes both the rounded apical membranous lobes, and the acute portion leading to the awn. These all decay pretty rapidly, leaving a truncate coriacious portion behind. Males: male inflorescence with 1 spikelet or 2–5 spikelets, racemose, 10–70 mm long, 5–20 mm wide. Male inflorescence spathes persistent, shorter than spikelets, coriaceous, grey, enclosing the base of the spikelet. Male flowers in spikelets. Male spikelets erect on stiff pedicels or sessile, oblong or orbicular, apex rounded, 8–18 mm, 7–13 mm, with 12–25 flowers, pedicels absent ie spikelets sessile. Male bracts taller than flowers, 5–8 mm long, oblong, acute, cartilaginous, bract upper margin with honeycombed cells, which eventually decay (almost the upper 1/4 of the spikelet, when this decays the remnant of the bract is obtuse to rounded), bract awn minute or absent, an anthesis the bract apices are reflexed, acute and dark, but these decay with age, leaving a more rounded spikelet. Male flower 4–4.5 mm long. Male tepals sepals more rigid than petals, cartilaginous, petals membranous, oblong, inner and outer tepals the same length. Male outer lateral tepals conduplicate, keel densely villous. Anthers 2–2.5 mm long, exserted from the flowers. Pistillode present. Females: female inflorescence racemose, 10–30 mm long, 10–20 mm wide, with 1 spikelet or 2–5 spikelets. Female spathes insignificant or shorter than the spikelets, persistent, coriaceous. Female spikelet sessile, oblong, apex rounded, 10–20 mm long, with 5–12 flowers, with 2–6 sterile bracts. Female bracts taller than flowers, reflexed, 7–10 mm long, oblong, acute or acuminate, cartilaginous, apical margin like rest of bract, darker than body of bract, awn minute or absent. Female flower 4–5 mm long, without a fleshy pedicel. Female tepals cartilaginous, keels of lateral sepals densely villous or both lateral sepal keels and odd sepal villous, midrib flush with the tepal body, apices acute, inner whorl shorter than outer. Female outer lateral tepals conduplicate, 4–5 mm long. Female odd outer tepal oblong, 3.8–4.5 mm long. Female inner tepals oblong, 3.5–4 mm long. Staminodes present. Styles feathery, 3. Style bases free. Ovary with 2 locules, dehiscent. Fruit: seed (1.32–)1.43(–1.52) mm long, (1.04–)1.12(–1.24) mm in diameter, shape in side view oblong, shape in diameter triangular in cross section, brown or grey, striate.